data russell_1000(index=(caldt));
 infile datalines firstobs=2 dsd truncover;
 input caldt:date9. (open high low close volume) (:7.);
datalines;
Week of,Open,High,Low,Close,Volume
29-Oct-01,580.57,580.57,553.52,570.69,0
22-Oct-01,564.10,583.50,560.19,580.57,0
15-Oct-01,573.63,582.15,555.65,564.10,0
8-Oct-01,561.82,577.63,552.46,573.63,0
1-Oct-01,546.46,569.22,538.97,561.82,0
24-Sep-01,507.98,546.46,507.98,546.46,0
17-Sep-01,575.57,575.57,497.21,507.98,0
10-Sep-01,572.54,577.98,566.29,575.57,0
3-Sep-01,597.67,609.04,570.41,572.54,0
27-Aug-01,623.26,624.57,592.78,597.67,0
20-Aug-01,611.65,623.41,606.74,623.26,0
13-Aug-01,626.37,631.48,608.72,611.65,0
6-Aug-01,639.86,639.86,615.88,626.37,0
30-Jul-01,634.44,646,631.70,639.86,0
23-Jul-01,636.86,639.49,613.17,634.44,0
16-Jul-01,640.24,644.82,629.60,636.86,0
9-Jul-01,628.20,641.71,615.47,640.17,0
2-Jul-01,646.93,654.42,627.12,628.20,0
25-Jun-01,646.07,653.35,635.21,646.64,0
18-Jun-01,639.76,653.84,636.45,646.07,0
11-Jun-01,668.40,668.40,634.25,640.39,0
4-Jun-01,665.55,679.81,663.16,668.40,0
28-May-01,675.46,675.46,656.83,665.55,0
21-May-01,681.62,695.72,674.64,675.46,0
14-May-01,656.44,684,653.57,681.62,0
7-May-01,668.51,670.58,654.07,656.44,0
30-Apr-01,659.49,671.97,649.83,668.51,0
23-Apr-01,654.77,659.50,634.75,659.49,0
16-Apr-01,622.42,660.41,613.94,654.76,0
9-Apr-01,591.50,622.42,590.65,622.42,0
2-Apr-01,610.36,614.11,572.48,591.50,0
26-Mar-01,599.86,622.55,597.88,610.36,0
19-Mar-01,605.71,621.95,568.77,599.86,0
12-Mar-01,649.59,649.59,604.90,605.71,0
5-Mar-01,651.83,669.91,647.22,649.59,0
26-Feb-01,658.41,672.28,640.30,651.83,0
19-Feb-01,688.47,691.35,641.73,658.41,0
12-Feb-01,693.76,705.64,684.09,688.47,0
5-Feb-01,712.44,720.25,691.11,693.76,0
29-Jan-01,716.92,732.13,712.06,712.44,0
22-Jan-01,709.91,726.08,705.59,716.93,0
15-Jan-01,698.40,718.03,695.54,709.92,0
8-Jan-01,683.83,706.56,670.76,698.40,0
1-Jan-01,700.09,713.80,670.89,683.83,0
25-Dec-00,691.53,711.52,673.13,676.89,0
18-Dec-00,697.34,714.95,662.22,691.55,0
11-Dec-00,729.83,741.44,692.57,697.35,0
4-Dec-00,694.16,734.48,690.33,729.83,0
27-Nov-00,710.56,721.23,681.83,694.16,0
20-Nov-00,726.23,726.23,696.88,710.55,0
13-Nov-00,727.48,744.10,704.72,726.23,0
6-Nov-00,766.36,771,727.48,727.48,0
30-Oct-00,736.44,768.13,734.15,764.91,0
23-Oct-00,746.41,756.87,711.79,736.44,0
16-Oct-00,732.70,752.57,695.19,746.41,0
9-Oct-00,751.58,752.37,705.11,732.70,0
2-Oct-00,772.60,778.55,744.90,751.58,0
25-Sep-00,776.85,785.46,762.36,772.60,0
18-Sep-00,784,785.48,758.99,776.85,0
11-Sep-00,798.01,804.63,780.86,784,0
4-Sep-00,813.71,813.71,795.73,798.01,0
28-Aug-00,801.39,818.26,800.49,813.71,0
21-Aug-00,790.55,805.19,789.77,801.39,0
14-Aug-00,778.37,794.73,776.51,790.55,0
7-Aug-00,773.19,787.55,766.90,778.37,0
31-Jul-00,748.36,773.85,746.86,773.19,0
24-Jul-00,785.50,788.82,745.19,748.29,0
17-Jul-00,802.15,806.22,783.50,785.50,0
10-Jul-00,782.61,802.15,778.53,802.15,0
3-Jul-00,769.68,785.83,760.17,782.61,0
26-Jun-00,765.32,777.42,760.93,769.68,0
19-Jun-00,776.20,790.27,763.62,765.32,0
12-Jun-00,773.97,786.41,764.09,776.20,0
5-Jun-00,785.02,785.41,771.43,773.97,0
29-May-00,727.09,787.66,727.09,785.02,0
22-May-00,742.61,744.82,716.91,727.09,0
15-May-00,751.25,777.90,739.27,742.61,0
8-May-00,760.27,760.27,727.39,751.25,0
1-May-00,771.58,786.19,740.54,760.32,0
24-Apr-00,757.32,783.69,741.77,771.58,0
17-Apr-00,715.08,766.07,709.66,757.32,0
10-Apr-00,805.59,810.62,706.27,715.20,0
3-Apr-00,797.99,807.96,746.12,805.59,0
27-Mar-00,813.56,817.97,781.40,797.99,0
20-Mar-00,781.64,826.76,767.32,813.56,0
13-Mar-00,749.67,787.95,724.89,781.64,0
6-Mar-00,756.55,759.40,722.94,749.67,0
28-Feb-00,714.86,756.52,709.81,756.41,0
21-Feb-00,716.05,730.81,708.33,714.86,0
14-Feb-00,735.19,745.16,715.26,716.05,0
7-Feb-00,752.57,764.32,730.84,735.19,0
31-Jan-00,719.67,759.30,712.74,752.57,0
24-Jan-00,761.52,768.43,717.35,719.67,0
17-Jan-00,769.96,772.07,758.16,761.52,0
10-Jan-00,753.14,773.94,747.34,769.96,0
3-Jan-00,767.97,772.82,719.58,753.14,0
27-Dec-99,762.54,769.75,757.71,767.97,0
20-Dec-99,741.87,764.04,737.61,762.54,0
13-Dec-99,742.70,747.38,728.67,741.87,0
6-Dec-99,748.90,749.50,730.31,742.70,0
29-Nov-99,738.94,755.76,723.50,748.90,0
22-Nov-99,741.39,743.16,729.58,738.94,0
15-Nov-99,727.31,742.87,725.24,741.39,0
8-Nov-99,713.91,727.31,708.65,727.31,0
1-Nov-99,707.19,721.97,699.78,713.91,0
25-Oct-99,673.36,712.12,663.62,707.19,0
18-Oct-99,646.79,676.97,639.16,673.36,0
11-Oct-99,690.68,693.10,645.61,646.79,0
4-Oct-99,663.48,690.89,663.48,690.68,0
27-Sep-99,661.71,670.84,650.53,663.48,0
20-Sep-99,691.36,692.96,654.75,661.71,0
13-Sep-99,700.12,700.12,673.52,691.36,0
6-Sep-99,702.87,704.91,690.73,700.12,0
30-Aug-99,697.58,703.04,675.59,702.87,0
23-Aug-99,691.97,714.37,691.97,697.58,0
16-Aug-99,687.38,696.08,681.31,691.97,0
9-Aug-99,673.78,687.39,655.48,687.38,0
2-Aug-99,690.51,698.35,666.53,673.78,0
26-Jul-99,705.96,711.60,690.34,690.51,0
19-Jul-99,736.69,737.53,702.34,705.96,0
12-Jul-99,728.61,736.77,720.28,736.69,0
5-Jul-99,723.25,730.45,719.48,728.61,0
28-Jun-99,684.45,723.25,684.45,723.25,0
21-Jun-99,698.40,703.06,681.54,684.45,0
14-Jun-99,673.96,699.30,672.60,698.40,0
7-Jun-99,692.07,696.33,671.17,673.96,0
31-May-99,679.10,691.58,666.34,691.58,0
24-May-99,694.19,695.41,666.48,679.10,0
17-May-99,697.45,704.36,688.81,694.19,0
10-May-99,700.05,717.57,695.06,697.45,0
3-May-99,695.25,705.18,686.47,700.05,0
26-Apr-99,704.98,712.68,685.18,695.25,0
19-Apr-99,684.94,708.21,667.45,704.98,0
12-Apr-99,697.67,705.38,679.18,684.94,0
5-Apr-99,670.89,698.90,670.89,697.67,0
29-Mar-99,664.70,680.39,664.70,670.89,0
22-Mar-99,672.70,674.85,651.18,664.70,0
15-Mar-99,671.37,685.32,669.79,672.70,0
8-Mar-99,662.39,677.43,660.76,671.37,0
1-Mar-99,643.67,662.39,633.15,662.39,0
22-Feb-99,644.12,666.89,637.26,643.67,0
15-Feb-99,639.16,650.59,634.20,644.11,0
8-Feb-99,644.77,651.49,630.32,639.16,0
1-Feb-99,665.64,667.86,641.56,644.77,0
25-Jan-99,639.62,666.24,636.43,665.64,0
18-Jan-99,649.45,664.87,635.76,639.62,0
11-Jan-99,665.64,666.70,631.26,649.45,0
4-Jan-99,642.87,667.71,637.25,665.64,0
28-Dec-98,636.89,647.22,634.86,642.87,0
21-Dec-98,617.12,638.44,617.12,636.89,0
14-Dec-98,605.86,617.66,591,617.12,0
7-Dec-98,612.84,621.26,599.48,605.86,0
30-Nov-98,619.96,620.19,598.38,612.84,0
23-Nov-98,605.35,620.19,574.46,619.96,0
16-Nov-98,585.58,605.35,585.58,605.35,0
9-Nov-98,593.73,593.73,580.42,585.58,0
2-Nov-98,570.63,593.82,570.63,593.73,0
26-Oct-98,554.99,572.98,549.77,570.63,0
19-Oct-98,546.09,561.95,545.19,554.99,0
12-Oct-98,507.64,548.96,507.64,546.09,0
5-Oct-98,520.57,521.99,476.52,507.64,0
28-Sep-98,542.45,551.05,504.71,520.57,0
21-Sep-98,530.36,553.61,517.02,542.45,0
14-Sep-98,522.01,542.18,522.01,530.36,0
7-Sep-98,504.44,531.21,501.86,522.01,0
31-Aug-98,532.43,535.62,487.27,504.44,0
24-Aug-98,562.75,574.93,529.20,532.43,0
17-Aug-98,555.88,577.16,549.75,562.75,0
10-Aug-98,569.74,570.91,550.74,555.88,0
3-Aug-98,584.97,585.13,551.58,569.74,0
27-Jul-98,595.85,598.43,582.17,584.97,0
20-Jul-98,620.15,621.92,590.01,596.41,0
13-Jul-98,608.68,620.82,606.71,620.15,0
6-Jul-98,599.09,609.94,598.52,608.68,0
29-Jun-98,591.78,599.94,591.78,599.09,0
22-Jun-98,575.47,596.33,575.14,591.78,0
15-Jun-98,574.86,581.64,562.95,575.47,0
8-Jun-98,582.86,588.89,565.83,574.86,0
1-Jun-98,572.11,582.86,565.34,582.86,0
25-May-98,582.09,585.30,563.48,572.16,0
18-May-98,582.28,589.37,576.86,582.09,0
11-May-98,583.50,590.24,580.15,582.28,0
4-May-98,589.83,594.81,576.69,583.50,0
27-Apr-98,583.29,589.84,566.55,589.83,0
20-Apr-98,591.41,596.46,581.75,583.29,0
13-Apr-98,584.64,591.42,580.22,591.41,0
6-Apr-98,590.88,595.49,578.52,584.63,0
30-Mar-98,576.96,592.81,574.23,590.88,0
23-Mar-98,578.81,585.88,575.03,576.96,0
16-Mar-98,563.50,579.82,563.50,578.81,0
9-Mar-98,556.25,567.16,553.43,563.49,0
2-Mar-98,553.14,556.25,543.63,556.25,0
23-Feb-98,545.71,554.33,542.81,553.14,0
16-Feb-98,538.73,545.81,538.73,545.71,0
9-Feb-98,533.88,541.49,531.01,538.73,0
2-Feb-98,517.02,534.63,517.02,533.88,0
26-Jan-98,505.69,522.90,503.55,517.02,0
19-Jan-98,507.49,516.29,502.52,505.69,0
12-Jan-98,490.26,509.23,482.29,507.49,0
5-Jan-98,515.37,519.37,487.41,490.26,0
29-Dec-97,495.87,516.19,495.87,515.37,0
;
run;

data russell_1000(label='Weekly Closing Returns of Russell 1000 Index'
                  index=(caldt));
 set russell_1000;
 by caldt;
 vwretd=dif(close)/lag(close);
 format caldt date9.;
 keep caldt vwretd;
run;

data csco(index=(issudatkey=(ticker caldt)));
 infile datalines firstobs=2 dsd truncover;
 input caldt:date9. (open high low close) (:7.) volume:9.0;
 ticker='CSCO';
 format caldt date9.;
datalines;
Week of,Open,High,Low,Close,Volume
29-Oct-01,17.23,17.70,16.06,17.26,78482900
22-Oct-01,16.52,17.83,16.15,17.29,77071600
15-Oct-01,16.65,17.45,15.47,16.72,72493100
8-Oct-01,14.40,17.40,14.35,16.95,87359300
1-Oct-01,12.05,15.03,11.15,14.94,112411300
24-Sep-01,12.58,13.15,11.04,12.18,95028400
17-Sep-01,13.24,14.59,11.86,12.09,103751000
10-Sep-01,14.05,14.72,13.95,14.47,68496800
3-Sep-01,16.10,16.64,14.02,14.36,78539700
27-Aug-01,18.20,18.33,15.75,16.33,53043000
20-Aug-01,16.52,18.60,15.75,18.25,56606500
13-Aug-01,18.28,18.40,16.16,16.61,44275900
6-Aug-01,19.79,20,17.55,18.33,59976100
30-Jul-01,19.05,20.75,18.55,20.05,60661900
23-Jul-01,18.82,19.60,17.92,19.06,58181600
16-Jul-01,18.34,18.61,16.82,17.99,56860500
9-Jul-01,17.02,18.94,16.01,18.74,65630200
2-Jul-01,18.69,19.44,16.70,16.79,47009100
25-Jun-01,18,20,17.61,18.20,64320400
18-Jun-01,16.80,18.53,16.14,17.52,63600700
11-Jun-01,20.31,20.58,16.40,16.65,73672500
4-Jun-01,19.08,22,19.01,20.49,60606300
28-May-01,21.52,21.55,18.48,18.85,69925400
21-May-01,20.30,24.13,20.21,22.05,98768400
14-May-01,18.93,20.73,18.18,20.20,78706500
7-May-01,19.89,21,18.54,19.05,104142700
30-Apr-01,16.50,20.06,16.50,19.64,110220500
23-Apr-01,18.55,18.64,14.98,15.60,85007800
16-Apr-01,17.65,19.50,15.85,19.15,121869300
9-Apr-01,14.16,18.32,13.70,17.98,108172500
2-Apr-01,15.94,16.12,13.19,13.63,117744900
26-Mar-01,19.06,19.19,15,15.81,130387200
19-Mar-01,20.50,21.94,18.45,18.69,66688900
12-Mar-01,19.06,21.87,18.37,19.94,85139800
5-Mar-01,22.94,24.94,20.31,20.62,97018400
26-Feb-01,27.20,27.31,21.94,22.19,115535900
19-Feb-01,28.67,28.69,25,27,104004700
12-Feb-01,28.56,31.44,27.48,28.25,86526900
5-Feb-01,34.56,36.19,28,28.19,134503900
29-Jan-01,36.13,39.50,35.19,35.50,55025400
22-Jan-01,40.69,43.38,36.19,38.38,58853100
15-Jan-01,38,44,37.25,40.38,68974700
8-Jan-01,34.94,39.75,33.64,38.06,54700000
1-Jan-01,32.56,44.50,31.94,36.63,96137400
25-Dec-00,41.75,42.31,32.63,33.31,46718000
18-Dec-00,49,50.13,35.16,41.50,94210900
11-Dec-00,52.88,55.75,47.13,48.17,63786100
4-Dec-00,49.06,53.56,45,52.38,54726700
27-Nov-00,53.69,54.52,45.19,48.50,45775200
20-Nov-00,50.06,54.50,49.94,52.69,44601700
13-Nov-00,48.81,54.36,48,52.75,53689800
6-Nov-00,55.94,57.63,50,50.06,71540700
30-Oct-00,49.19,57.13,45.25,56.75,57698100
23-Oct-00,56.25,57.75,50,50.69,63208100
16-Oct-00,55.19,59.44,50,57.31,58653900
9-Oct-00,55.44,56.19,48.22,56.06,70727700
2-Oct-00,57.38,59.38,54.59,56.19,60198400
25-Sep-00,60.72,61.36,54.63,55.25,64709600
18-Sep-00,61.56,63.63,58.44,60.31,55223800
11-Sep-00,63.50,63.88,58,62.75,65966600
4-Sep-00,67.56,68.31,63.31,63.88,33991200
28-Aug-00,65.75,69.62,65.62,68.56,31149700
21-Aug-00,64.12,67.50,64.12,65.50,34907600
14-Aug-00,64,64.81,62.27,63.50,34898300
7-Aug-00,66.20,70,62,64.31,57768900
31-Jul-00,62.89,66.87,58.50,65.56,46861300
24-Jul-00,67.94,69.12,61.94,62.81,39577800
17-Jul-00,67.62,69.75,66.25,68.12,33729500
10-Jul-00,64.25,68.75,61.63,68.25,42349200
3-Jul-00,63.38,65.94,60.88,65.37,26758400
26-Jun-00,63.08,65.25,60.13,63.56,34431100
19-Jun-00,67,69.56,62.50,62.63,29773700
12-Jun-00,64.50,67.94,61.50,67.81,35617100
5-Jun-00,63.69,65.06,61.13,64.37,32110200
29-May-00,57.48,65.75,56.38,64.37,53769500
22-May-00,53.19,58.44,50,54.94,73971700
15-May-00,59.44,62.27,52.44,53.44,60639100
8-May-00,64.06,64.62,58.06,59.94,65587200
1-May-00,69.87,71.87,63.50,67.75,40882500
24-Apr-00,61.56,70,59.25,69.33,50049900
17-Apr-00,56.94,70,56.67,65.12,45305400
10-Apr-00,75.44,76,55.06,57,62799500
3-Apr-00,76.87,77,64,74.94,45276700
27-Mar-00,81.44,82,70.75,77.31,53019700
20-Mar-00,67.50,81.31,66.28,79.37,43949200
13-Mar-00,67.50,70.015,62.155,67.50,29760100
6-Mar-00,68.595,70.94,65,68.19,23942500
28-Feb-00,65.385,69.47,63.81,68.72,20323200
21-Feb-00,63.28,69.50,60.625,66.375,36037600
14-Feb-00,66.47,66.47,62.655,62.905,23802500
7-Feb-00,62.03,68.125,61.28,65.47,36865300
31-Jan-00,51.47,61.25,50,60.56,32430100
24-Jan-00,57.875,57.875,51.50,51.935,23197700
17-Jan-00,53.75,57.685,53.625,57.625,23987500
10-Jan-00,54.25,55,51.75,53.78,21269500
3-Jan-00,54.97,55.125,48.625,52.935,28292500
27-Dec-99,52.50,53.595,51.03,53.56,9965400
20-Dec-99,50.375,52.50,50.03,52.22,16156900
13-Dec-99,50,50.875,46.435,49.845,26933900
6-Dec-99,48,51.50,47.655,49.905,21629100
29-Nov-99,46.935,48.50,44.185,47.78,21903600
22-Nov-99,44.095,47.685,43.31,46.595,18605300
15-Nov-99,41.78,44.31,40.97,44.06,16636600
8-Nov-99,36.75,42.22,36.625,41.72,28755600
1-Nov-99,36.50,37.25,34.935,36.72,22011300
25-Oct-99,33.78,37.25,32.56,37,24796400
18-Oct-99,33.47,35.47,32.53,33.28,21748700
11-Oct-99,36.095,36.435,33.25,33.595,17412800
4-Oct-99,34.53,36.50,34.22,35.905,15434400
27-Sep-99,35.06,35.125,32.935,34.435,19587800
20-Sep-99,36.75,36.75,33.345,34.50,18897500
13-Sep-99,35.935,36.78,34.625,36.75,18809600
6-Sep-99,35.47,35.875,34.31,35.375,14096600
30-Aug-99,34.47,35.47,33,35.47,17491600
23-Aug-99,32.375,35.155,32.095,34.25,21034800
16-Aug-99,31.875,32.375,30.845,32.06,13465400
9-Aug-99,31.565,31.94,28.08,31.78,28028600
2-Aug-99,30.845,32,29.19,31.125,19744600
26-Jul-99,31,32.03,30.50,31.065,15334000
19-Jul-99,33.06,33.06,30.50,31.47,18793900
12-Jul-99,33.875,33.905,31.97,33,16207900
5-Jul-99,34.155,34.625,32.665,33.53,18473700
28-Jun-99,31,33.53,30.47,33.53,21607300
21-Jun-99,30.015,31.155,29.625,30.655,22722200
14-Jun-99,27.8425,29.875,26.9225,29.8425,13286500
7-Jun-99,28.6725,29.125,27.4225,27.6725,10572600
31-May-99,27.265,28.75,26.375,28.7175,11210000
24-May-99,28.4525,28.4675,25.9375,27.25,13900500
17-May-99,28.7025,29.375,28.0925,28.3125,10038300
10-May-99,27.375,30.5775,27.0625,28.86,19153300
3-May-99,28.4375,28.8425,26.1875,27.125,14593100
26-Apr-99,29.4375,29.78,26.6875,28.515,12557700
19-Apr-99,26.61,29.39,24.8125,29.3425,16750900
12-Apr-99,28.875,29.78,26.25,26.4225,13021500
5-Apr-99,27.8425,30,27.8425,29.53,12350600
29-Mar-99,26.53,28.125,26.4775,27.485,11779000
22-Mar-99,26.25,26.905,24.8425,26.2975,11379400
15-Mar-99,25.8425,27.25,25.4525,26.125,9934500
8-Mar-99,25.50,27,25.4525,25.8125,12845000
1-Mar-99,24.4375,25.265,23.50,25.2025,14747600
22-Feb-99,24.3425,26.11,23.875,24.4525,15844700
15-Feb-99,25.4675,25.655,22.905,24.28,15612000
8-Feb-99,25.8425,26.265,23.875,24.765,19572500
1-Feb-99,28.265,29.375,24.9225,25.3125,26459800
25-Jan-99,25.875,28,24.8425,27.89,15651400
18-Jan-99,26.155,27.485,24.515,25.7025,17890300
11-Jan-99,26.905,26.9675,22.4675,25.4225,21757100
4-Jan-99,23.625,27,23.3425,26.6725,19312000
28-Dec-98,23.875,24.0625,22.9525,23.2025,8540000
21-Dec-98,23.4375,24.4375,23.015,23.5475,17396300
14-Dec-98,20.64,22.655,19.655,22.61,15188200
7-Dec-98,19.7025,21.1875,19.375,20.875,14064200
30-Nov-98,20.03,20.0925,18.4675,19.5625,13634300
23-Nov-98,18.8425,20,18.5775,20,8412300
16-Nov-98,16.50,18.7175,16.375,18.655,15126800
9-Nov-98,16.9375,17.235,16.0625,16.1725,10493300
2-Nov-98,15.9525,17.0925,15.61,16.86,19103700
26-Oct-98,14.875,15.9375,14.5475,15.75,16014900
19-Oct-98,13.9525,14.9225,13.345,14.6725,15841300
12-Oct-98,13.3125,14.8125,12.485,13.845,21758000
5-Oct-98,12.75,13,10.2825,12.515,41958800
28-Sep-98,16.875,17.0575,13.22,13.9375,23221400
21-Sep-98,14.9075,16.7175,14.75,16.61,12747700
14-Sep-98,15.6767,16.3125,15,15.265,15141500
7-Sep-98,15.625,15.8333,14.4783,15.4583,15438500
31-Aug-98,15.7817,15.9783,13.5833,14.875,24329900
24-Aug-98,17.145,17.5417,15.4267,15.7817,14785200
17-Aug-98,16,17.365,15.9167,17.125,12323700
10-Aug-98,16.25,16.6033,15.8333,16.0733,10914900
3-Aug-98,16.02,16.6933,15.4167,16.145,17047200
27-Jul-98,16.0833,16.6667,15.6567,15.9583,10320200
20-Jul-98,16.7817,17.4167,15.77,16.2917,13531500
13-Jul-98,15.5733,16.645,15.395,16.625,7988500
6-Jul-98,15.52,15.8533,15.0833,15.49,7152600
29-Jun-98,15.145,15.8233,15,15.4367,9647900
22-Jun-98,13.8333,15,13.7183,14.9783,9457300
15-Jun-98,13.02,13.8567,13,13.8533,8831200
8-Jun-98,12.9367,13.4683,12.7083,13.1867,7874100
1-Jun-98,12.625,12.9683,12.1567,12.9067,10625400
25-May-98,12.9367,13.125,12.49,12.6033,7151200
18-May-98,12.7283,13.5833,12.6033,12.8117,8654800
11-May-98,12.75,12.7917,12.3333,12.7283,5836700
4-May-98,12.49,12.76,12.25,12.625,8817100
27-Apr-98,11.7183,12.4583,11.5617,12.27,7405800
20-Apr-98,11.8533,12.3333,11.76,11.99,5822800
13-Apr-98,11.0933,11.875,11.01,11.74,7913800
6-Apr-98,11.875,11.895,11.0317,11.1667,8899900
30-Mar-98,11.5517,11.99,11.145,11.7817,7509700
23-Mar-98,10.5733,11.6667,10.5633,11.5617,10528500
16-Mar-98,10.8017,10.8233,10.48,10.605,7781900
9-Mar-98,10.615,10.875,10,10.76,10479500
2-Mar-98,11.145,11.2083,10.1883,10.7283,10124300
23-Feb-98,11.0617,11.4167,10.7917,10.9783,8440300
16-Feb-98,10.9783,11.0417,10.6867,10.9683,7548400
9-Feb-98,11.0617,11.0617,10.5633,10.8117,7418500
2-Feb-98,10.8233,11.0317,10.355,10.99,14017600
26-Jan-98,9.6567,10.7917,9.3017,10.51,12974800
19-Jan-98,9.7183,9.9167,9.4167,9.615,8311000
12-Jan-98,8.6667,9.7917,8.5833,9.6467,9724200
5-Jan-98,9.6883,9.855,8.9167,9.0417,11973400
29-Dec-97,9.0733,9.73,9.0417,9.6767,7922500
;
run;

data ibm(index=(issudatkey=(ticker caldt)));
 infile datalines firstobs=2 dsd truncover;
 input caldt:date9. (open high low close) (:7.) volume:9.0;
 ticker='IBM ';
 format caldt date9.;
 datalines;
Week of,Open,High,Low,Close,Volume
29-Oct-01,110.50,111.12,106.90,109.50,7423300
22-Oct-01,102.65,112.10,101.90,111.16,8634400
15-Oct-01,99.85,106.70,99.66,102.65,12707500
8-Oct-01,98.03,101,94.90,100.84,9651600
1-Oct-01,91.72,98.88,91.34,98.02,9301500
24-Sep-01,91.80,96,87.49,91.72,12361900
17-Sep-01,93.90,96.85,89.50,90.50,15173700
10-Sep-01,96,97.40,95.59,96.47,10311500
3-Sep-01,100.15,103.13,96,96.59,10330600
27-Aug-01,106.99,108.20,98.86,99.95,7666200
20-Aug-01,104.68,107.80,101.40,106.99,6668700
13-Aug-01,105,106.85,103.66,104.59,5937700
6-Aug-01,107.109,107.229,102.70,104.95,5324400
30-Jul-01,104.762,109.945,104.622,108.037,5009800
23-Jul-01,105.561,106.809,102.595,104.562,6527600
16-Jul-01,108.387,109.236,102.894,105.561,9659800
9-Jul-01,106.36,109.156,101.426,108.387,9016500
2-Jul-01,113.35,115.248,105.671,106.36,6340600
25-Jun-01,113.60,116.796,110.954,113.35,7046000
18-Jun-01,113.83,117.096,111.213,112.721,6785300
11-Jun-01,116.147,118.314,113.231,113.45,7904000
4-Jun-01,113.101,118.843,112.701,115.947,5822700
28-May-01,117.195,117.435,111.493,112.741,6819900
21-May-01,117.795,119.742,116.946,117.645,6834500
14-May-01,111.053,117.525,110.854,117.285,6505500
7-May-01,115.907,118.743,110.814,111.663,7551700
30-Apr-01,116.106,118.65,110.919,115.568,8022700
23-Apr-01,113.722,116.605,111.398,115.907,7774900
16-Apr-01,95.9572,116.106,94.9597,114.54,15508300
9-Apr-01,98.2514,101.683,93.5632,95.9572,10218600
2-Apr-01,97.204,99.7476,89.8227,97.7028,12312500
26-Mar-01,95.0096,99.7476,93.5134,95.9372,10467500
19-Mar-01,90.7703,94.7502,87.4288,93.274,11382200
12-Mar-01,97.6529,98.6504,87.9774,89.8726,13863700
5-Mar-01,102.551,108.126,97.6529,99.0394,9226900
26-Feb-01,105.533,107.378,97.2539,102.042,11982500
19-Feb-01,114.261,115.308,99.997,103.738,10722700
12-Feb-01,110.271,118.341,110.022,114.71,7225400
5-Feb-01,109,117.902,108.90,111.717,7269300
29-Jan-01,112.088,116.323,109.199,109.866,6538000
22-Jan-01,109.099,114.828,107.231,113.77,8056700
15-Jan-01,93.4069,113.521,91.4765,110.843,13851500
8-Jan-01,93.1578,96.0846,90.9161,93.4692,7470200
1-Jan-01,83.4435,99.385,83.4435,93.656,12077800
25-Dec-00,88.6743,89.2347,81.8245,84.5021,7809300
18-Dec-00,88.0516,94.0919,79.7695,88.6743,10043600
11-Dec-00,96.1469,97.8904,86.993,87.4911,8295400
4-Dec-00,95.6487,104.367,92.7842,96.645,7506100
27-Nov-00,100.07,101.627,91.9124,95.2751,6473200
20-Nov-00,101.129,103.993,97.9527,99.5718,5660400
13-Nov-00,91.4765,102.125,91.2897,101.564,5890600
6-Nov-00,99.3831,103.37,92.6597,92.6597,6543100
30-Oct-00,93.0395,102.12,89.8677,99.6318,7949200
23-Oct-00,94.2833,94.5321,86.5093,93.226,9758000
16-Oct-00,110.951,113.314,89.8055,94.2833,14741300
9-Oct-00,115.366,118.787,102.617,108.525,7617100
2-Oct-00,112.07,119.036,108.028,115.429,8788100
25-Sep-00,123.887,126.001,109.707,112.07,6272100
18-Sep-00,124.633,126.063,119.409,123.265,4425900
11-Sep-00,127.245,128.551,122.145,124.384,5600000
4-Sep-00,132.158,134.211,128.738,128.862,5050400
28-Aug-00,129.235,134.273,128.924,132.967,6150200
21-Aug-00,120.466,129.235,119.285,128.365,4904400
14-Aug-00,119.409,123.078,118.725,119.844,4747800
7-Aug-00,115.921,121.213,114.993,120.031,5971800
31-Jul-00,109.833,115.797,109.398,115.175,4803100
24-Jul-00,113.436,114.927,108.218,111.137,5690900
17-Jul-00,103.807,117.101,100.39,114.057,10576300
10-Jul-00,104.055,105.298,100.39,103.31,5014400
3-Jul-00,108.093,109.212,99.3962,104.428,9652100
26-Jun-00,112.318,115.051,107.969,108.901,6594300
19-Jun-00,112.815,119.959,110.143,111.20,5572800
12-Jun-00,118.406,119.71,112.566,112.566,5272800
5-Jun-00,107.783,121.574,107.783,118.965,7566200
29-May-00,107.099,110.33,104.863,108.156,4633900
22-May-00,105.36,111.572,102.813,106.292,6239400
15-May-00,103.372,108.59,101.384,105.795,5938900
8-May-00,107.41,109.957,101.446,103.807,6682000
1-May-00,111.821,112.939,105.857,107.224,4430200
24-Apr-00,101.384,113.249,100.639,110.827,7097600
17-Apr-00,103.248,114.43,101.446,103.372,10870700
10-Apr-00,123.997,124.618,102.254,104.366,8429900
3-Apr-00,119.275,127.227,114.368,122.381,9468800
27-Mar-00,124.245,127.476,116.356,117.66,8899600
20-Mar-00,109.336,121.512,109.274,119.897,7618100
13-Mar-00,103.372,111.013,101.881,109.336,7398000
6-Mar-00,109.274,110.33,100.39,104.614,8517200
28-Feb-00,103.993,109.336,98.8991,107.348,10225600
21-Feb-00,111.324,112.752,104.304,107.348,8628500
14-Feb-00,115.299,118.157,110.827,111.821,5319800
7-Feb-00,115.299,119.027,112.442,114.678,5362900
31-Jan-00,110.702,117.722,108.466,114.927,6566800
24-Jan-00,121.139,122.133,109.398,110.889,6665000
17-Jan-00,118.965,123.997,112.007,120.766,10482600
10-Jan-00,116.542,122.568,114.678,118.902,8532700
3-Jan-00,111.758,119.027,109.957,112.814,10227400
27-Dec-99,109.025,110.081,105.981,107.223,3362500
20-Dec-99,108.404,109.77,107.099,107.969,4536000
13-Dec-99,107.472,112.069,103.869,109.336,7762000
6-Dec-99,112.317,121.387,106.913,108.342,11725200
29-Nov-99,104.304,112.193,101.508,111.199,7534000
22-Nov-99,104.863,109.211,101.198,104.366,9291400
15-Nov-99,95.4202,104.49,92.0655,103.31,12310100
8-Nov-99,89.9534,96.9111,89.9534,95.2959,8713900
1-Nov-99,97.9049,98.2155,89.4563,89.7048,12292300
25-Oct-99,93.6806,98.4019,91.5684,97.6564,11105800
18-Oct-99,107.348,112.379,88.4623,93.37,25270600
11-Oct-99,112.814,115.983,103.247,107.223,11843200
4-Oct-99,117.287,122.505,110.392,112.814,10728100
27-Sep-99,125.86,126.046,114.802,117.039,8031100
20-Sep-99,125.736,130.084,119.71,124.245,7531800
13-Sep-99,133.812,134.744,123.002,124.618,7127700
6-Sep-99,128.096,136.856,127.599,134.184,7067800
30-Aug-99,123.499,128.966,121.946,128.081,5623500
23-Aug-99,122.008,125.115,120.145,123.251,6309700
16-Aug-99,124.245,128.842,120.331,121.014,6035500
9-Aug-99,122.878,123.748,118.219,122.63,4973100
2-Aug-99,123.251,126.233,116.852,122.754,6136500
26-Jul-99,122.878,127.91,122.008,124.928,5470600
19-Jul-99,135.675,138.036,121.884,124.058,9311900
12-Jul-99,136.607,138.346,133.687,135.427,5224600
5-Jul-99,131.699,136.607,129.836,136.545,5811700
28-Jun-99,123.251,131.451,121.449,131.451,5833900
21-Jun-99,122.133,126.978,120.828,122.381,5494200
14-Jun-99,115.175,121.263,113.311,120.02,6116000
7-Jun-99,117.411,120.952,111.882,113.622,5755100
31-May-99,112.938,115.299,108.776,115.299,6133700
24-May-99,114.46,117.598,109.832,115.299,6849500
17-May-99,117.287,119.586,113.901,114.492,4132700
10-May-99,107.969,122.257,107.099,118.902,7239300
3-May-99,103.371,108.093,102.533,107.969,4696300
26-Apr-99,101.756,106.975,100.545,103.962,7124700
19-Apr-99,84.9212,102.657,81.0075,99.2714,10318200
12-Apr-99,91.1955,91.444,84.5484,84.6727,4334600
5-Apr-99,88.9591,93.463,88.7417,92.5933,4428600
29-Mar-99,86.9712,90.2016,86.6606,87.9652,3338800
22-Mar-99,83.834,87.4061,81.5044,85.6666,5182700
15-Mar-99,89.0523,91.1955,83.4924,83.7719,5542600
8-Mar-99,88.7728,92.4069,87.9962,88.4621,4286300
1-Mar-99,84.2378,88.9281,82.0325,88.6485,5918400
22-Feb-99,85.6045,89.4561,82.7469,84.3621,5221400
15-Feb-99,86.9712,88.5864,83.8962,85.2939,4259700
8-Feb-99,82.9954,88.8659,80.3862,85.853,5788200
1-Feb-99,91.6924,91.6924,81.7839,82.4983,5890300
25-Jan-99,90.5742,92.8416,86.2256,91.0712,8236200
18-Jan-99,93.3076,99.0228,88.2757,89.3317,9940300
11-Jan-99,93.9288,94.4258,88.8969,91.9098,3972000
4-Jan-99,91.9409,95.7924,90.2014,93.2144,4508000
28-Dec-98,92.6863,94.3947,91.1954,91.6303,2213600
21-Dec-98,85.2627,93.4007,85.2627,93.4007,3287800
14-Dec-98,82.7468,85.5733,80.7589,85.2627,3955100
7-Dec-98,81.7218,84.4862,81.1316,83.4922,3177200
30-Nov-98,84.362,84.7658,80.6346,81.6286,3222300
23-Nov-98,80.0134,84.5794,79.796,84.4862,2625900
16-Nov-98,78.8331,80.1998,78.3361,79.5785,3413700
9-Nov-98,74.9194,79.4543,74.5156,78.2429,4120100
2-Nov-98,73.77,75.0126,72.4344,74.5156,3579500
26-Oct-98,70.2291,74.4534,69.6078,73.8011,4404300
19-Oct-98,67.0919,71.4094,67.0919,70.3533,5293900
12-Oct-98,64.6691,68.9555,62.8986,67.5578,5319400
5-Oct-98,61.5009,63.582,58.0531,63.2714,7097000
28-Sep-98,66.8434,67.682,59.1092,62.0289,5017200
21-Sep-98,59.6994,67.0608,59.6372,66.3464,4167100
14-Sep-98,63.613,65.0729,61.7494,61.9668,4029900
7-Sep-98,62.0911,63.3335,58.7365,62.8986,5045500
31-Aug-98,61.1282,61.5009,55.0402,59.3266,6091900
24-Aug-98,63.613,65.4767,60.041,60.9107,4615700
17-Aug-98,62.1842,65.104,61.7494,63.5509,3560200
10-Aug-98,64.0479,64.6691,61.6251,62.3085,3599800
3-Aug-98,66.5948,67.0296,61.625,64.1721,5457400
27-Jul-98,61.5008,68.6448,60.7553,65.8493,4801700
20-Jul-98,60.1341,65.1039,59.7924,61.7493,5975200
13-Jul-98,58.8917,59.9477,57.6492,59.7303,2502900
6-Jul-98,57.1522,59.2644,56.0341,58.8917,2798300
29-Jun-98,56.7174,58.1151,56.4068,57.2454,3231700
22-Jun-98,52.8037,56.9969,52.7726,56.1583,3234000
15-Jun-98,56.9659,57.3697,52.6795,52.7416,5553000
8-Jun-98,59.0159,59.6371,56.6553,57.7735,2745300
1-Jun-98,58.3326,59.1402,56.5932,59.078,3528300
25-May-98,60.8174,61.1281,58.3326,58.3947,3580600
18-May-98,61.9978,63.116,60.1962,60.60,3070700
11-May-98,59.7303,64.2652,58.3015,62.0909,5727200
4-May-98,58.2082,59.6371,57.7113,59.6371,3014600
27-Apr-98,57.7734,58.8916,56.8415,58.084,3784500
20-Apr-98,53.6423,59.637,53.2695,58.3325,6501500
13-Apr-98,52.9589,54.6673,51.7786,53.5491,3511400
6-Apr-98,52.8036,52.9279,51.468,52.8657,3031500
30-Mar-98,51.7475,53.021,50.94,52.0271,2759900
23-Mar-98,50.474,53.021,50.3809,51.8718,3586600
16-Mar-98,49.5422,51.3127,49.3248,50.7225,3458700
9-Mar-98,48.2687,50.2566,47.6475,49.5111,3982300
2-Mar-98,51.7786,51.965,48.7657,48.7657,4206900
23-Feb-98,51.4059,52.6172,50.5672,51.9028,3041300
16-Feb-98,51.2195,51.996,50.3498,51.0021,3777900
9-Feb-98,48.7657,51.499,48.4551,50.8778,4338200
2-Feb-98,49.6974,50.3186,48.5793,48.7036,3833300
26-Jan-98,49.3247,49.6664,47.5232,49.0762,4466700
19-Jan-98,52.2755,53.8596,48.952,49.2936,7343300
12-Jan-98,48.8277,52.2755,48.455,52.1823,4922200
5-Jan-98,52.4618,53.2694,49.3868,49.7285,4824600
29-Dec-97,51.1262,52.555,51.0641,52.4929,2809200
;
run;

data msft(index=(issudatkey=(ticker caldt)));
 infile datalines firstobs=2 dsd truncover;
 input caldt:date9. (open high low close) (:7.) volume:9.0;
 ticker='MSFT';
 format caldt date9.;
 datalines;
Week of,Open,High,Low,Close,Volume
29-Oct-01,62.10,63.02,58.10,61.40,37025600
22-Oct-01,57.90,63.63,57.47,62.20,37161700
15-Oct-01,55.90,59.30,55.50,57.90,37788400
8-Oct-01,56.80,58.65,53,56.38,39348200
1-Oct-01,50.94,58.40,50.41,57.72,43068200
24-Sep-01,50.65,53,48,51.17,42687700
17-Sep-01,54.02,55.10,47.50,49.71,64059400
10-Sep-01,54.92,57.95,54.70,57.58,42235900
3-Sep-01,57.19,59.08,55.31,55.40,44860000
27-Aug-01,61.90,63.36,56.30,57.05,29568800
20-Aug-01,61.66,63.20,59,62.05,28880200
13-Aug-01,65.24,66.09,61.50,61.88,20479900
6-Aug-01,66.53,67.24,62.90,65.52,21146800
30-Jul-01,65.65,67.54,65.54,66.89,25436500
23-Jul-01,69.24,69.24,65.05,65.47,36496500
16-Jul-01,71.45,73,67.94,69.18,37757500
9-Jul-01,66.20,72.05,64.20,71.34,39387400
2-Jul-01,72.05,73.15,65.67,66.06,27194700
25-Jun-01,69.10,76.15,67.70,73,40475100
18-Jun-01,67.95,70.61,66.01,68.83,30510800
11-Jun-01,72.85,72.85,66.40,68.02,34968900
4-Jun-01,70.55,73.75,69.80,73.19,33204000
28-May-01,70.80,71.75,68.40,70.34,35747800
21-May-01,68.05,71.90,67.75,70.91,41411300
14-May-01,69.13,70.14,67.25,68.09,39583700
7-May-01,70.83,72.15,68.65,69.40,37658000
30-Apr-01,68.53,71.15,67.60,70.75,43674700
23-Apr-01,68.11,71,66.21,67.12,49840100
16-Apr-01,61.40,71.10,60.04,69,65999800
9-Apr-01,56.57,62.31,55.66,62.18,45361800
2-Apr-01,54.8125,57.375,51.0625,56.1875,48014400
26-Mar-01,57.125,58.5625,53.875,54.6875,41512200
19-Mar-01,54.50,57,49.75,56.5625,50373000
12-Mar-01,54.6875,56.0781,51.625,54.5625,48058500
5-Mar-01,57.25,61.125,54.875,56.6875,33432900
26-Feb-01,57.625,61.1875,56.25,56.6875,43327600
19-Feb-01,57.375,58.25,53.875,56.75,39764300
12-Feb-01,58.8125,61.0625,56.125,57.3125,34167400
5-Feb-01,60.75,65.0625,58.50,59.125,46251900
29-Jan-01,63.5625,64.75,60.375,60.8125,36705200
22-Jan-01,60.75,64.3125,58.9375,64,43616000
15-Jan-01,53.375,61.4375,51.125,61,57555500
8-Jan-01,48.9375,55.75,46.6875,53.50,46058000
1-Jan-01,43.1875,50.50,43.125,49.125,56962300
25-Dec-00,46.875,48.5625,42.875,43.375,39595500
18-Dec-00,49,50,40.3125,46.4375,64922100
11-Dec-00,55.50,60.50,47.75,49.1875,44514300
4-Dec-00,57.25,60.50,52.25,54.4375,53895000
27-Nov-00,71.4375,72.25,56.0625,56.625,61804400
20-Nov-00,68.125,70.4375,65.5625,69.9375,31303400
13-Nov-00,66.6875,71.50,64.4062,69.0625,42665900
6-Nov-00,68.6875,72.375,66.8125,67.375,57013500
30-Oct-00,67.50,70.8438,67.375,68.25,44253700
23-Oct-00,64.625,69.1875,60.1875,67.6875,68632000
16-Oct-00,53.50,66.125,48.4375,65.1875,72894300
9-Oct-00,55.625,56.9375,52.125,53.75,41633600
2-Oct-00,60.50,60.8125,54.50,55.5625,42328300
25-Sep-00,63.25,65.875,58.625,60.3125,44175800
18-Sep-00,64.25,65.75,61,63.25,34956900
11-Sep-00,69.125,69.6875,63.3125,64.1875,31443900
4-Sep-00,70,72.0625,69.1875,69.3125,35267100
28-Aug-00,70.1875,72.75,69.6875,70.1875,27952500
21-Aug-00,70.6875,72.4375,69.9375,70.625,22040900
14-Aug-00,72.3125,73.375,70,71,22966900
7-Aug-00,70.1875,74.875,69.75,72.4375,33934100
31-Jul-00,70.1875,71.125,68.125,69.125,25836700
24-Jul-00,72.0625,72.125,67.25,69.6875,35574200
17-Jul-00,78.25,79.5625,71.875,72.3125,37532500
10-Jul-00,80.6875,81.3125,77.1875,78.9375,28024800
3-Jul-00,79.6875,82.875,78.25,82,19073200
26-Jun-00,77.50,80.125,76.6875,80,20762200
19-Jun-00,72.5625,82.1875,72,77.6875,40640600
12-Jun-00,69,73.125,66.125,72.5625,30784500
5-Jun-00,66.0156,72.125,66,68.8125,37020500
29-May-00,62.4375,66.75,62,66.3125,37309300
22-May-00,65.125,66.5625,60.375,61.4375,36357100
15-May-00,69,70.625,64.50,65.0625,25577000
8-May-00,70.9375,71.375,65.75,68.8125,26098200
1-May-00,72.875,74,68.8125,71.125,34060100
24-Apr-00,67.25,71.125,65,69.75,73600600
17-Apr-00,74.25,81.9375,73,78.9375,39708700
10-Apr-00,88.625,88.625,73.25,74.125,53118500
3-Apr-00,94.4375,96.50,84.9375,89.0625,67328500
27-Mar-00,107.766,108.938,102.375,106.25,38537200
20-Mar-00,98.75,115,96.50,111.688,48381800
13-Mar-00,97.625,100.25,93.25,99.375,34699100
6-Mar-00,96,102.50,90.125,101,49674800
28-Feb-00,90.25,98.875,88.125,96.125,44982600
21-Feb-00,95.125,97.125,90.50,91.3125,34647200
14-Feb-00,101.234,101.75,94.875,95.0625,37666500
7-Feb-00,106.812,110,99.125,99.9375,32141100
31-Jan-00,97.625,108,94.875,106.562,29785700
24-Jan-00,103.797,105.688,97.25,98.25,29466600
17-Jan-00,111.812,116.50,103.25,103.75,37977200
10-Jan-00,113.438,114.25,101.50,112.25,31480000
3-Jan-00,117.375,118.625,107.312,111.438,28839700
27-Dec-99,118.438,119.938,116.125,116.75,10912000
20-Dec-99,114.812,119.25,110.625,117.438,20809100
13-Dec-99,93.6094,117.125,92.75,115.25,58693800
6-Dec-99,95.25,97.1875,91.4375,93.875,23000700
29-Nov-99,90.125,97.125,89.50,96.125,28404400
22-Nov-99,89.625,93.375,88.375,91.125,30458600
15-Nov-99,88.25,88.50,84.375,86,29578300
8-Nov-99,84.8125,90.75,84.375,89.1875,54166300
1-Nov-99,93.25,94.50,90.3125,91.5625,26853400
25-Oct-99,92,95.25,89.3125,92.5625,28739900
18-Oct-99,87.1875,93.875,85.0625,92.6875,33780000
11-Oct-99,94.625,95,87.3125,88.0625,20223600
4-Oct-99,90.50,95.1875,89.50,94.9375,19062800
27-Sep-99,92,92.9375,88.3125,89.9844,20931100
20-Sep-99,96,97.875,88.875,90.9375,28556600
13-Sep-99,94.50,96.50,90.625,96.4375,24206100
6-Sep-99,94.875,96.6875,91.7969,95,20315800
30-Aug-99,92.875,96.4375,90.125,95.875,20222900
23-Aug-99,84.3125,96.375,83.875,93.25,36596900
16-Aug-99,85.0625,86.1875,82.3125,83.375,28498300
9-Aug-99,85.625,85.8125,81.625,84.6875,29434300
2-Aug-99,85.6875,87.1875,84.375,85.125,32251500
26-Jul-99,88.875,90.50,85.50,85.8125,28770800
19-Jul-99,100,100.75,89.6875,90.25,35725700
12-Jul-99,93.1875,99.875,92.375,99.4375,26897400
5-Jul-99,92.25,93.3125,89.25,93.25,18866000
28-Jun-99,85.50,92.125,84.9375,92,20811700
21-Jun-99,84.875,89,84,84.9375,18737900
14-Jun-99,78.75,85,76.6875,85,22726700
7-Jun-99,79.9375,82.625,77.5625,78.125,19703900
31-May-99,80.625,80.75,76.125,79.5625,18432700
24-May-99,77.875,80.875,75.50,80.6875,24005400
17-May-99,77.375,80.25,77,77.5625,27617400
10-May-99,79.875,81.75,76.625,76.875,28528500
3-May-99,81.4375,81.8125,76.4375,79.0625,32274300
26-Apr-99,87.1875,88.9375,79.875,81.3125,28241800
19-Apr-99,86.875,88.125,80,86,38826900
12-Apr-99,91.625,93.625,83.875,86.625,25491800
5-Apr-99,94.3125,95.625,91,94.25,19688700
29-Mar-99,90.125,94.625,87.875,92.6875,30892200
22-Mar-99,86.4688,90.1875,81.5625,89.0625,20603500
15-Mar-99,80.2812,87.0625,78.9375,85.5938,16114700
8-Mar-99,77.75,82.375,77.50,80.0938,16315700
1-Mar-99,74.7812,77.6875,73.5312,77.4688,15134900
22-Feb-99,74.125,79.6875,72.375,75.0625,19270400
15-Feb-99,79.875,79.9375,71.9922,73.875,22812700
8-Feb-99,81.2812,83.375,78.5625,78.875,19207500
1-Feb-99,87.7188,87.9688,77.4375,80,23227000
25-Jan-99,80.8438,87.5625,79.5625,87.50,23986800
18-Jan-99,75.6875,83.875,75.4375,78.125,24403700
11-Jan-99,75.4375,75.4688,68,74.875,14913700
4-Jan-99,69.8047,76.25,69.6875,74.9375,15202300
28-Dec-98,71.50,71.8125,69,69.3438,7004000
21-Dec-98,69.3125,72,68.6875,70.875,8639600
14-Dec-98,66.375,69.125,63.8438,68.9062,14121600
7-Dec-98,63.8438,67.3438,63.375,67,16046000
30-Nov-98,64.6875,65.1328,60.0625,63.6875,15938400
23-Nov-98,56.25,64.0625,56.25,64.0312,17482100
16-Nov-98,55.6562,56.875,53.75,56.8125,11834000
9-Nov-98,54.5938,57.375,54.1875,55,13591300
2-Nov-98,53.1875,54.875,52.375,54.6562,15179100
26-Oct-98,53.4062,54.0938,52.4375,52.9375,15077700
19-Oct-98,52.0625,55.0625,49.8125,53.1875,21085800
12-Oct-98,49.625,53.25,47.875,52.5312,14838700
5-Oct-98,51.25,51.8125,43.875,48.4375,24978900
28-Sep-98,56.50,57.1875,50.50,52.0625,13017800
21-Sep-98,51.25,57.3125,51.1875,56.5312,13280800
14-Sep-98,52.4688,54.25,52.1562,52.6875,11494000
7-Sep-98,50,52.3125,49.3438,52.125,15365800
31-Aug-98,52.4375,53.25,47.25,48.3125,22731900
24-Aug-98,55.1562,56.875,52.375,52.625,13837700
17-Aug-98,51.75,56.375,51.50,55.3125,14493400
10-Aug-98,52.9062,53.1562,51,52.125,12112900
3-Aug-98,54.5625,55.4375,50.75,52.9375,20423300
27-Jul-98,56.5625,58.4375,54.9688,54.9688,16178300
20-Jul-98,59.0938,59.75,55.9375,56.9062,15172500
13-Jul-98,57.0625,59.8125,56.8125,58.9688,16155900
6-Jul-98,53.4375,56.625,52.6875,56.5938,9918500
29-Jun-98,52.75,55.0625,52.3125,53.625,13981700
22-Jun-98,47.375,53.4375,46.8438,52.2188,21200900
15-Jun-98,42.3438,47.375,42.2812,47.3438,15529300
8-Jun-98,42.8125,44.1875,42,42.875,8523100
1-Jun-98,41.9375,43.25,41.5625,43.125,9258300
25-May-98,42.6562,43.25,41.4375,42.4062,10492800
18-May-98,42.25,43.6875,42.25,42.7812,12056900
11-May-98,43.0625,45.50,41.625,44.7188,16961300
4-May-98,44.5938,44.9375,40.9375,42.875,15556700
27-Apr-98,44.75,46.125,44.0625,44.8125,12797500
20-Apr-98,46.1875,49.5625,45.9375,46.0625,14663900
13-Apr-98,44.4062,46.125,43.375,46.0625,8961500
6-Apr-98,46.3125,46.3125,43.3125,44.50,12954700
30-Mar-98,44.0312,46.5312,43.5625,46.50,9243900
23-Mar-98,40.5938,45.4688,40.5312,43.9062,14797000
16-Mar-98,41.2188,41.50,39.8438,40.9062,10115900
9-Mar-98,41.25,41.50,39.75,41.1875,11000200
2-Mar-98,42.9375,42.9375,39.625,41.375,15801000
23-Feb-98,40.4688,43,39.6875,42.375,22148500
16-Feb-98,39.625,39.625,38.2188,38.7812,10067100
9-Feb-98,39.6875,40.0156,38.9062,39.375,7452500
2-Feb-98,37.9375,39.6875,37.625,39.5312,8469900
26-Jan-98,34.9688,37.5312,34.6133,37.2969,9371200
19-Jan-98,33.5312,34.9688,33.50,34.5625,11655400
12-Jan-98,31.1562,33.8438,31.0938,33.8125,8091900
5-Jan-98,32.8125,33.4062,31.4688,31.75,9371400
29-Dec-97,30.5938,32.875,30.5312,32.7812,7236700
;
run;

data ret(index=(caldt ticker issudatkey=(ticker caldt)));
 set ibm msft csco;
 by ticker caldt;
 ret=dif(close)/lag(close);
 if first.ticker then ret=.;
 keep ticker caldt ret;
run;

proc summary nway data=ret;
 class ticker;
 var caldt;
 output out=header(keep=ticker begdt enddt index=(ticker))
        min=begdt max=enddt;
run;