Biogen Inc. historical data
| Date | Open | High | Low | Close | Adj. close | Volume |
|---|---|---|---|---|---|---|
| 2026-07-23 | 197.04 | 203.60 | 196.92 | 200.62 | 200.62 | 1,032,100 |
| 2026-07-22 | 203.70 | 204.31 | 197.40 | 197.74 | 197.74 | 841,300 |
| 2026-07-21 | 199.47 | 203.70 | 198.59 | 203.16 | 203.16 | 652,800 |
| 2026-07-20 | 204.08 | 205.65 | 199.62 | 199.95 | 199.95 | 962,700 |
← NewerPage 2 of 2 · 64 trading days
Stock splits
| Date | Split (new : old) |
|---|---|
| 2001-01-18 | 3:1 |
| 1999-12-21 | 2:1 |
Dividends
No dividends on record.
Open, high, low and close are as traded (USD). Adjusted close accounts for splits and dividends. Educational only, not financial advice.