On December 31, 1999, Biogen (BIIB) had a market capitalization of $15.5B, based on 473.14M shares at a price of $32.75.
| DATE | CLOSE | VOLUME | OUTSTANDING | MARKET CAP |
|---|---|---|---|---|
December 31 1999 | $32.75 | 1,224,300 | 473,136,000 | $15,495,204,000.00 |
December 30 1999 | $31.32 | 2,124,900 | 473,136,000 | $14,819,991,614.40 |
December 29 1999 | $31.92 | 1,825,800 | 473,136,000 | $15,100,939,771.20 |
December 28 1999 | $32.50 | 1,639,200 | 473,136,000 | $15,376,920,000.00 |
December 27 1999 | $32.63 | 3,137,400 | 473,136,000 | $15,436,062,000.00 |
December 23 1999 | $31.77 | 8,518,800 | 473,136,000 | $15,031,909,228.80 |
December 22 1999 | $28.69 | 5,734,800 | 473,136,000 | $13,573,089,000.00 |
December 21 1999 | $24.06 | 4,609,800 | 473,136,000 | $11,384,835,000.00 |
December 20 1999 | $21.08 | 2,865,600 | 473,136,000 | $9,975,268,228.80 |
December 17 1999 | $20.33 | 3,681,000 | 473,136,000 | $9,620,416,228.80 |
December 16 1999 | $19.75 | 1,884,000 | 473,136,000 | $9,344,436,000.00 |
December 15 1999 | $20.42 | 3,277,200 | 473,136,000 | $9,659,875,771.20 |
December 14 1999 | $19.70 | 3,455,400 | 473,136,000 | $9,319,785,614.40 |
December 13 1999 | $21.15 | 2,409,600 | 473,136,000 | $10,004,839,228.80 |
December 10 1999 | $19.81 | 6,177,600 | 473,136,000 | $9,374,007,000.00 |
December 09 1999 | $18.92 | 4,954,200 | 473,136,000 | $8,950,171,771.20 |
December 08 1999 | $19.79 | 6,821,400 | 473,136,000 | $9,364,165,771.20 |
December 07 1999 | $18.92 | 6,771,600 | 473,136,000 | $8,950,171,771.20 |
December 06 1999 | $18.92 | 8,268,000 | 473,136,000 | $8,950,171,771.20 |
December 03 1999 | $21.14 | 9,977,400 | 473,136,000 | $9,999,918,614.40 |
December 02 1999 | $20.86 | 2,257,800 | 473,136,000 | $9,871,793,385.60 |
December 01 1999 | $20.65 | 4,876,200 | 473,136,000 | $9,768,271,228.80 |
November 30 1999 | $21.13 | 2,455,800 | 473,136,000 | $9,994,998,000.00 |
November 29 1999 | $22.30 | 1,383,000 | 473,136,000 | $10,551,926,385.60 |
November 26 1999 | $23.17 | 703,800 | 473,136,000 | $10,960,999,771.20 |
