On December 31, 1991, Microsoft (MSFT) had a market capitalization of $12.3B, based on 8.76B shares at a price of $1.41.
| DATE | CLOSE | VOLUME | OUTSTANDING | MARKET CAP |
|---|---|---|---|---|
December 31 1991 | $1.41 | 40,512,000 | 8,760,000,000 | $12,326,196,000.00 |
December 30 1991 | $1.40 | 35,524,800 | 8,760,000,000 | $12,271,008,000.00 |
December 27 1991 | $1.40 | 36,657,600 | 8,760,000,000 | $12,229,836,000.00 |
December 26 1991 | $1.36 | 24,326,400 | 8,760,000,000 | $11,953,020,000.00 |
December 24 1991 | $1.34 | 23,995,200 | 8,760,000,000 | $11,772,564,000.00 |
December 23 1991 | $1.35 | 46,113,600 | 8,760,000,000 | $11,828,628,000.00 |
December 20 1991 | $1.31 | 35,356,800 | 8,760,000,000 | $11,439,684,000.00 |
December 19 1991 | $1.30 | 38,116,800 | 8,760,000,000 | $11,384,496,000.00 |
December 18 1991 | $1.30 | 33,561,600 | 8,760,000,000 | $11,398,512,000.00 |
December 17 1991 | $1.29 | 27,480,000 | 8,760,000,000 | $11,288,136,000.00 |
December 16 1991 | $1.29 | 27,225,600 | 8,760,000,000 | $11,315,292,000.00 |
December 13 1991 | $1.29 | 26,193,600 | 8,760,000,000 | $11,302,152,000.00 |
December 12 1991 | $1.29 | 36,979,200 | 8,760,000,000 | $11,302,152,000.00 |
December 11 1991 | $1.27 | 39,134,400 | 8,760,000,000 | $11,163,744,000.00 |
December 10 1991 | $1.29 | 46,252,800 | 8,760,000,000 | $11,274,120,000.00 |
December 09 1991 | $1.29 | 57,720,000 | 8,760,000,000 | $11,302,152,000.00 |
December 06 1991 | $1.32 | 51,580,800 | 8,760,000,000 | $11,550,936,000.00 |
December 05 1991 | $1.29 | 24,892,800 | 8,760,000,000 | $11,274,120,000.00 |
December 04 1991 | $1.29 | 36,297,600 | 8,760,000,000 | $11,302,152,000.00 |
December 03 1991 | $1.28 | 64,996,800 | 8,760,000,000 | $11,232,948,000.00 |
December 02 1991 | $1.28 | 55,852,800 | 8,760,000,000 | $11,218,932,000.00 |
November 29 1991 | $1.23 | 20,524,800 | 8,760,000,000 | $10,774,800,000.00 |
November 27 1991 | $1.20 | 15,009,600 | 8,760,000,000 | $10,554,048,000.00 |
November 26 1991 | $1.20 | 58,809,600 | 8,760,000,000 | $10,470,828,000.00 |
November 25 1991 | $1.21 | 33,724,800 | 8,760,000,000 | $10,595,220,000.00 |