On December 31, 1990, Microsoft (MSFT) had a market capitalization of $4.8B, based on 7.53B shares at a price of $0.64.
| DATE | CLOSE | VOLUME | OUTSTANDING | MARKET CAP |
|---|---|---|---|---|
December 31 1990 | $0.64 | 23,702,400 | 7,526,666,700 | $4,784,702,021.19 |
December 28 1990 | $0.63 | 20,268,000 | 7,526,666,700 | $4,768,896,021.12 |
December 27 1990 | $0.63 | 22,629,600 | 7,526,666,700 | $4,753,090,021.05 |
December 26 1990 | $0.63 | 16,214,400 | 7,526,666,700 | $4,768,896,021.12 |
December 24 1990 | $0.64 | 13,550,400 | 7,526,666,700 | $4,784,702,021.19 |
December 21 1990 | $0.64 | 33,472,800 | 7,526,666,700 | $4,817,066,688.00 |
December 20 1990 | $0.64 | 46,994,400 | 7,526,666,700 | $4,800,508,021.26 |
December 19 1990 | $0.63 | 34,264,800 | 7,526,666,700 | $4,760,616,687.75 |
December 18 1990 | $0.64 | 51,876,000 | 7,526,666,700 | $4,784,702,021.19 |
December 17 1990 | $0.63 | 27,288,000 | 7,526,666,700 | $4,705,672,020.84 |
December 14 1990 | $0.62 | 48,636,000 | 7,526,666,700 | $4,681,586,687.40 |
December 13 1990 | $0.61 | 50,709,600 | 7,526,666,700 | $4,625,889,353.82 |
December 12 1990 | $0.61 | 71,560,800 | 7,526,666,700 | $4,610,083,353.75 |
December 11 1990 | $0.61 | 61,768,800 | 7,526,666,700 | $4,585,998,020.31 |
December 10 1990 | $0.63 | 55,526,400 | 7,526,666,700 | $4,705,672,020.84 |
December 07 1990 | $0.63 | 81,921,600 | 7,526,666,700 | $4,721,478,020.91 |
December 06 1990 | $0.63 | 108,201,600 | 7,526,666,700 | $4,753,090,021.05 |
December 05 1990 | $0.64 | 68,630,400 | 7,526,666,700 | $4,784,702,021.19 |
December 04 1990 | $0.63 | 54,547,200 | 7,526,666,700 | $4,737,284,020.98 |
December 03 1990 | $0.62 | 68,241,600 | 7,526,666,700 | $4,697,392,687.47 |
November 30 1990 | $0.61 | 72,165,600 | 7,526,666,700 | $4,594,277,353.68 |
November 29 1990 | $0.60 | 65,865,600 | 7,526,666,700 | $4,530,300,686.73 |
November 28 1990 | $0.59 | 77,623,200 | 7,526,666,700 | $4,474,603,353.15 |
November 27 1990 | $0.61 | 63,417,600 | 7,526,666,700 | $4,570,192,020.24 |
November 26 1990 | $0.59 | 47,577,600 | 7,526,666,700 | $4,467,076,686.45 |