On December 31, 1998, Microsoft (MSFT) had a market capitalization of $231.1B, based on 10.98B shares at a price of $21.05.
| DATE | CLOSE | VOLUME | OUTSTANDING | MARKET CAP |
|---|---|---|---|---|
December 31 1998 | $21.05 | 23,834,400 | 10,977,777,800 | $231,086,613,801.12 |
December 30 1998 | $21.10 | 34,942,800 | 10,977,777,800 | $231,606,960,468.84 |
December 29 1998 | $21.33 | 29,651,600 | 10,977,777,800 | $234,106,600,473.90 |
December 28 1998 | $21.61 | 23,636,400 | 10,977,777,800 | $237,230,876,035.78 |
December 24 1998 | $21.52 | 13,832,400 | 10,977,777,800 | $236,189,084,922.56 |
December 23 1998 | $21.79 | 34,940,000 | 10,977,777,800 | $239,209,071,595.34 |
December 22 1998 | $21.01 | 41,350,000 | 10,977,777,800 | $230,670,556,022.50 |
December 21 1998 | $21.32 | 48,112,000 | 10,977,777,800 | $234,002,311,584.80 |
December 18 1998 | $20.92 | 59,648,000 | 10,977,777,800 | $229,628,764,909.28 |
December 17 1998 | $20.40 | 46,963,600 | 10,977,777,800 | $223,900,560,453.24 |
December 16 1998 | $20.30 | 60,024,000 | 10,977,777,800 | $222,859,867,117.80 |
December 15 1998 | $20.02 | 51,719,600 | 10,977,777,800 | $219,735,591,555.92 |
December 14 1998 | $19.42 | 64,077,600 | 10,977,777,800 | $213,174,173,764.86 |
December 11 1998 | $20.34 | 51,728,800 | 10,977,777,800 | $223,275,924,896.42 |
December 10 1998 | $19.97 | 57,015,600 | 10,977,777,800 | $219,214,147,110.42 |
December 09 1998 | $20.28 | 44,781,600 | 10,977,777,800 | $222,651,289,339.60 |
December 08 1998 | $19.91 | 77,585,200 | 10,977,777,800 | $218,589,511,553.60 |
December 07 1998 | $20.27 | 89,809,200 | 10,977,777,800 | $222,547,000,450.50 |
December 04 1998 | $19.33 | 44,352,000 | 10,977,777,800 | $212,237,769,318.52 |
December 03 1998 | $18.54 | 51,426,800 | 10,977,777,800 | $203,489,578,189.70 |
December 02 1998 | $19.24 | 65,759,600 | 10,977,777,800 | $211,195,978,205.30 |
December 01 1998 | $19.66 | 86,330,800 | 10,977,777,800 | $215,778,102,659.02 |
November 30 1998 | $18.52 | 70,900,000 | 10,977,777,800 | $203,281,000,411.50 |
November 27 1998 | $19.44 | 26,335,600 | 10,977,777,800 | $213,382,751,543.06 |
November 25 1998 | $18.86 | 41,394,000 | 10,977,777,800 | $207,029,911,530.20 |