stock_prices.xls
DATA
| Date | S&P | GE | IBM | AAPL |
| 1/2/08 | 1447.16 | 34.20 | 99.39 | 180.05 |
| 1/7/08 | 1416.18 | 33.37 | 95.99 | 172.69 |
| 1/14/08 | 1416.25 | 32.56 | 101.62 | 161.36 |
| 1/22/08 | 1310.50 | 32.26 | 102.72 | 130.01 |
| 1/28/08 | 1353.96 | 34.31 | 107.20 | 133.75 |
| 2/4/08 | 1380.82 | 32.11 | 101.88 | 125.48 |
| 2/11/08 | 1339.13 | 32.61 | 104.73 | 124.63 |
| 2/19/08 | 1348.78 | 32.12 | 106.62 | 119.46 |
| 2/25/08 | 1371.80 | 31.73 | 112.33 | 125.02 |
| 3/3/08 | 1331.34 | 30.86 | 112.41 | 122.25 |
| 3/10/08 | 1273.37 | 32.38 | 113.68 | 126.61 |
| 3/17/08 | 1276.60 | 35.90 | 116.74 | 133.27 |
| 3/24/08 | 1349.88 | 35.05 | 113.03 | 143.01 |
| 3/31/08 | 1322.70 | 35.96 | 114.20 | 153.08 |
| 4/7/08 | 1372.54 | 30.69 | 114.44 | 147.14 |
| 4/14/08 | 1328.32 | 31.30 | 122.73 | 161.04 |
| 4/21/08 | 1388.17 | 31.91 | 121.42 | 169.73 |
| 4/28/08 | 1396.37 | 31.92 | 121.52 | 180.94 |
| 5/5/08 | 1388.28 | 30.90 | 122.89 | 183.45 |
| 5/12/08 | 1425.35 | 30.76 | 126.62 | 187.62 |
| 5/19/08 | 1375.93 | 29.14 | 123.03 | 181.17 |
| 5/27/08 | 1400.38 | 29.41 | 128.21 | 188.75 |
| 6/2/08 | 1360.68 | 28.74 | 123.76 | 185.64 |
| 6/9/08 | 1360.03 | 27.91 | 124.96 | 172.37 |
| 6/16/08 | 1317.93 | 26.51 | 121.58 | 175.27 |
| 6/23/08 | 1278.38 | 25.42 | 118.92 | 170.09 |
| 6/30/08 | 1262.90 | 26.05 | 118.41 | 170.12 |
| 7/7/08 | 1239.49 | 26.78 | 120.97 | 172.58 |
| 7/14/08 | 1260.68 | 27.11 | 128.67 | 165.15 |
| 7/21/08 | 1257.76 | 27.79 | 127.32 | 162.12 |
| 7/28/08 | 1260.31 | 27.31 | 125.45 | 156.66 |
| 8/4/08 | 1296.32 | 28.70 | 128.09 | 169.55 |
| 8/11/08 | 1298.20 | 28.85 | 125.66 | 175.74 |
| 8/18/08 | 1292.20 | 28.19 | 124.24 | 176.79 |
| 8/25/08 | 1282.83 | 27.20 | 121.05 | 169.53 |
| 9/2/08 | 1242.31 | 26.99 | 113.69 | 160.18 |
| 9/8/08 | 1251.70 | 25.90 | 118.31 | 148.94 |
| 9/15/08 | 1255.08 | 26.12 | 118.19 | 140.91 |
| 9/22/08 | 1213.27 | 24.77 | 118.76 | 128.24 |
| 9/29/08 | 1099.23 | 21.16 | 102.86 | 97.07 |
| 10/6/08 | 899.22 | 21.09 | 87.26 | 96.80 |
| 10/13/08 | 940.55 | 19.26 | 90.28 | 97.40 |
| 10/20/08 | 876.77 | 17.49 | 81.61 | 96.38 |
| 10/27/08 | 968.75 | 19.14 | 92.45 | 107.59 |
| 11/3/08 | 930.99 | 18.50 | 86.27 | 98.24 |
| 11/10/08 | 873.29 | 15.72 | 80.33 | 90.24 |
| 11/17/08 | 800.03 | 13.77 | 74.88 | 82.58 |
| 11/24/08 | 896.24 | 16.85 | 81.60 | 92.67 |
| 12/1/08 | 876.07 | 17.51 | 80.59 | 94.00 |
| 12/8/08 | 879.73 | 16.79 | 82.20 | 98.27 |
| 12/15/08 | 887.88 | 16.19 | 83.52 | 90.00 |
| 12/22/08 | 872.80 | 15.97 | 81.33 | 85.81 |
| 12/29/08 | 931.80 | 17.07 | 87.37 | 90.75 |
| 1/5/09 | 890.35 | 16.00 | 84.70 | 90.58 |
| 1/12/09 | 850.12 | 15.83 | 85.71 | 88.66 |