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 |
| 2026-07-17 | 208.60 | 215.79 | 203.40 | 205.99 | 205.99 | 1,151,300 |
| 2026-07-16 | 198.26 | 209.64 | 194.67 | 208.92 | 208.92 | 1,872,700 |
| 2026-07-15 | 191.21 | 198.58 | 186.03 | 197.24 | 197.24 | 2,067,300 |
| 2026-07-14 | 200.34 | 202.00 | 189.40 | 191.95 | 191.95 | 3,902,100 |
| 2026-07-13 | 199.33 | 210.87 | 197.74 | 209.03 | 209.03 | 2,259,800 |
| 2026-07-10 | 197.63 | 199.98 | 194.37 | 199.15 | 199.15 | 1,133,100 |
| 2026-07-09 | 198.92 | 201.01 | 196.00 | 198.91 | 198.91 | 1,657,300 |
| 2026-07-08 | 204.86 | 206.75 | 198.93 | 200.36 | 200.36 | 1,947,700 |
| 2026-07-07 | 211.86 | 212.00 | 205.65 | 205.70 | 205.70 | 1,156,900 |
| 2026-07-06 | 215.95 | 215.95 | 208.27 | 208.46 | 208.46 | 1,218,400 |
| 2026-07-02 | 212.74 | 219.02 | 210.75 | 216.12 | 216.12 | 1,155,100 |
| 2026-07-01 | 215.25 | 215.81 | 209.67 | 209.74 | 209.74 | 1,138,600 |
| 2026-06-30 | 218.00 | 218.00 | 212.58 | 216.06 | 216.06 | 1,091,300 |
| 2026-06-29 | 215.74 | 219.72 | 214.08 | 216.63 | 216.63 | 1,279,800 |
| 2026-06-26 | 202.53 | 218.06 | 202.29 | 216.03 | 216.03 | 2,374,400 |
| 2026-06-25 | 201.63 | 206.67 | 200.20 | 201.96 | 201.96 | 1,328,900 |
| 2026-06-24 | 199.34 | 202.06 | 198.66 | 199.59 | 199.59 | 1,348,800 |
| 2026-06-23 | 198.88 | 201.22 | 197.01 | 197.19 | 197.19 | 1,053,500 |
| 2026-06-22 | 199.48 | 200.98 | 194.74 | 199.71 | 199.71 | 1,675,000 |
| 2026-06-18 | 200.22 | 200.99 | 193.20 | 196.58 | 196.58 | 1,729,800 |
| 2026-06-17 | 195.14 | 201.75 | 194.04 | 198.67 | 198.67 | 1,009,000 |
| 2026-06-16 | 199.69 | 200.26 | 194.04 | 195.61 | 195.61 | 1,110,700 |
| 2026-06-15 | 198.37 | 199.37 | 195.89 | 198.64 | 198.64 | 883,900 |
| 2026-06-12 | 200.57 | 203.45 | 199.06 | 200.05 | 200.05 | 837,300 |
| 2026-06-11 | 195.49 | 201.18 | 194.24 | 199.96 | 199.96 | 914,700 |
| 2026-06-10 | 200.21 | 201.94 | 194.10 | 194.24 | 194.24 | 1,071,200 |
| 2026-06-09 | 195.51 | 199.63 | 193.45 | 199.10 | 199.10 | 934,200 |
| 2026-06-08 | 197.25 | 198.70 | 192.18 | 192.62 | 192.62 | 1,162,400 |
| 2026-06-05 | 196.45 | 200.66 | 195.14 | 195.34 | 195.34 | 880,400 |
| 2026-06-04 | 198.00 | 199.90 | 196.35 | 196.45 | 196.45 | 719,100 |
| 2026-06-03 | 187.69 | 196.51 | 187.48 | 195.96 | 195.96 | 891,500 |
| 2026-06-02 | 190.09 | 190.58 | 184.90 | 188.83 | 188.83 | 1,097,800 |
| 2026-06-01 | 194.50 | 195.28 | 191.67 | 192.23 | 192.23 | 841,500 |
| 2026-05-29 | 195.55 | 198.46 | 195.11 | 196.00 | 196.00 | 1,905,400 |
| 2026-05-28 | 196.97 | 198.00 | 194.50 | 196.39 | 196.39 | 556,200 |
| 2026-05-27 | 194.11 | 199.80 | 194.11 | 196.97 | 196.97 | 893,000 |
| 2026-05-26 | 194.30 | 195.50 | 192.27 | 193.08 | 193.08 | 930,100 |
| 2026-05-22 | 190.53 | 194.75 | 190.01 | 193.76 | 193.76 | 892,900 |
| 2026-05-21 | 187.40 | 190.27 | 185.85 | 189.47 | 189.47 | 1,475,200 |
| 2026-05-20 | 191.41 | 193.38 | 186.37 | 187.80 | 187.80 | 919,700 |
| 2026-05-19 | 191.72 | 193.03 | 188.64 | 190.56 | 190.56 | 1,054,100 |
| 2026-05-18 | 191.25 | 193.37 | 189.19 | 191.91 | 191.91 | 1,051,300 |
| 2026-05-15 | 191.83 | 194.91 | 190.66 | 192.95 | 192.95 | 1,252,200 |
| 2026-05-14 | 200.25 | 205.00 | 189.49 | 191.37 | 191.37 | 2,812,900 |
| 2026-05-13 | 199.33 | 205.97 | 198.86 | 204.53 | 204.53 | 1,271,900 |
| 2026-05-12 | 198.47 | 202.40 | 196.47 | 199.36 | 199.36 | 1,145,400 |
| 2026-05-11 | 194.76 | 200.31 | 194.75 | 197.95 | 197.95 | 1,772,200 |
| 2026-05-08 | 189.68 | 195.20 | 189.50 | 193.45 | 193.45 | 931,500 |
| 2026-05-07 | 190.34 | 192.10 | 188.86 | 191.38 | 191.38 | 735,600 |
| 2026-05-06 | 189.13 | 191.17 | 188.30 | 190.68 | 190.68 | 741,300 |
| 2026-05-05 | 187.38 | 189.69 | 186.00 | 189.13 | 189.13 | 586,100 |
| 2026-05-04 | 186.28 | 187.51 | 185.44 | 187.21 | 187.21 | 626,600 |
| 2026-05-01 | 189.28 | 190.57 | 186.14 | 187.06 | 187.06 | 696,800 |
| 2026-04-30 | 194.02 | 195.98 | 187.16 | 189.28 | 189.28 | 1,550,500 |
| 2026-04-29 | 183.12 | 195.89 | 180.18 | 194.38 | 194.38 | 2,453,400 |
| 2026-04-28 | 182.45 | 184.41 | 181.89 | 183.38 | 183.38 | 1,235,600 |
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.