On December 31, 1991, Microsoft (MSFT) had a market capitalization of $12.5B, based on 8.76B shares at a price of $1.43.
| DATE | CLOSE | VOLUME | OUTSTANDING | MARKET CAP |
|---|---|---|---|---|
December 31 1991 | $1.43 | 40,512,000 | 8,760,000,000 | $12,496,140,000.00 |
December 30 1991 | $1.42 | 35,524,800 | 8,760,000,000 | $12,440,076,000.00 |
December 27 1991 | $1.42 | 36,657,600 | 8,760,000,000 | $12,398,028,000.00 |
December 26 1991 | $1.38 | 24,326,400 | 8,760,000,000 | $12,117,708,000.00 |
December 24 1991 | $1.36 | 23,995,200 | 8,760,000,000 | $11,934,624,000.00 |
December 23 1991 | $1.37 | 46,113,600 | 8,760,000,000 | $11,991,564,000.00 |
December 20 1991 | $1.32 | 35,356,800 | 8,760,000,000 | $11,597,364,000.00 |
December 19 1991 | $1.32 | 38,116,800 | 8,760,000,000 | $11,541,300,000.00 |
December 18 1991 | $1.32 | 33,561,600 | 8,760,000,000 | $11,555,316,000.00 |
December 17 1991 | $1.31 | 27,480,000 | 8,760,000,000 | $11,443,188,000.00 |
December 16 1991 | $1.31 | 27,225,600 | 8,760,000,000 | $11,471,220,000.00 |
December 13 1991 | $1.31 | 26,193,600 | 8,760,000,000 | $11,457,204,000.00 |
December 12 1991 | $1.31 | 36,979,200 | 8,760,000,000 | $11,457,204,000.00 |
December 11 1991 | $1.29 | 39,134,400 | 8,760,000,000 | $11,317,044,000.00 |
December 10 1991 | $1.30 | 46,252,800 | 8,760,000,000 | $11,429,172,000.00 |
December 09 1991 | $1.31 | 57,720,000 | 8,760,000,000 | $11,457,204,000.00 |
December 06 1991 | $1.34 | 51,580,800 | 8,760,000,000 | $11,710,368,000.00 |
December 05 1991 | $1.30 | 24,892,800 | 8,760,000,000 | $11,429,172,000.00 |
December 04 1991 | $1.31 | 36,297,600 | 8,760,000,000 | $11,457,204,000.00 |
December 03 1991 | $1.30 | 64,996,800 | 8,760,000,000 | $11,387,124,000.00 |
December 02 1991 | $1.30 | 55,852,800 | 8,760,000,000 | $11,373,108,000.00 |
November 29 1991 | $1.25 | 20,524,800 | 8,760,000,000 | $10,923,720,000.00 |
November 27 1991 | $1.22 | 15,009,600 | 8,760,000,000 | $10,699,464,000.00 |
November 26 1991 | $1.21 | 58,809,600 | 8,760,000,000 | $10,615,368,000.00 |
November 25 1991 | $1.23 | 33,724,800 | 8,760,000,000 | $10,741,512,000.00 |
