On December 31, 1990, Microsoft (MSFT) had a market capitalization of $4.8B, based on 7.53B shares at a price of $0.63.
| DATE | CLOSE | VOLUME | OUTSTANDING | MARKET CAP |
|---|---|---|---|---|
December 31 1990 | $0.63 | 23,702,400 | 7,526,666,700 | $4,775,670,021.15 |
December 28 1990 | $0.63 | 20,268,000 | 7,526,666,700 | $4,759,864,021.08 |
December 27 1990 | $0.63 | 22,629,600 | 7,526,666,700 | $4,744,058,021.01 |
December 26 1990 | $0.63 | 16,214,400 | 7,526,666,700 | $4,759,864,021.08 |
December 24 1990 | $0.63 | 13,550,400 | 7,526,666,700 | $4,775,670,021.15 |
December 21 1990 | $0.64 | 33,472,800 | 7,526,666,700 | $4,808,034,687.96 |
December 20 1990 | $0.64 | 46,994,400 | 7,526,666,700 | $4,791,476,021.22 |
December 19 1990 | $0.63 | 34,264,800 | 7,526,666,700 | $4,752,337,354.38 |
December 18 1990 | $0.63 | 51,876,000 | 7,526,666,700 | $4,775,670,021.15 |
December 17 1990 | $0.62 | 27,288,000 | 7,526,666,700 | $4,696,640,020.80 |
December 14 1990 | $0.62 | 48,636,000 | 7,526,666,700 | $4,673,307,354.03 |
December 13 1990 | $0.61 | 50,709,600 | 7,526,666,700 | $4,616,857,353.78 |
December 12 1990 | $0.61 | 71,560,800 | 7,526,666,700 | $4,601,051,353.71 |
December 11 1990 | $0.61 | 61,768,800 | 7,526,666,700 | $4,577,718,686.94 |
December 10 1990 | $0.62 | 55,526,400 | 7,526,666,700 | $4,696,640,020.80 |
December 07 1990 | $0.63 | 81,921,600 | 7,526,666,700 | $4,712,446,020.87 |
December 06 1990 | $0.63 | 108,201,600 | 7,526,666,700 | $4,744,058,021.01 |
December 05 1990 | $0.63 | 68,630,400 | 7,526,666,700 | $4,775,670,021.15 |
December 04 1990 | $0.63 | 54,547,200 | 7,526,666,700 | $4,728,252,020.94 |
December 03 1990 | $0.62 | 68,241,600 | 7,526,666,700 | $4,688,360,687.43 |
November 30 1990 | $0.61 | 72,165,600 | 7,526,666,700 | $4,585,998,020.31 |
November 29 1990 | $0.60 | 65,865,600 | 7,526,666,700 | $4,522,021,353.36 |
November 28 1990 | $0.59 | 77,623,200 | 7,526,666,700 | $4,466,324,019.78 |
November 27 1990 | $0.61 | 63,417,600 | 7,526,666,700 | $4,561,912,686.87 |
November 26 1990 | $0.59 | 47,577,600 | 7,526,666,700 | $4,458,797,353.08 |