Biogen Inc. historical data
| Date | Open | High | Low | Close | Adj. close | Volume |
|---|---|---|---|---|---|---|
| 2018-03-20 | 278.66 | 281.40 | 276.51 | 279.68 | 279.68 | 1,313,400 |
| 2018-03-19 | 285.83 | 286.49 | 276.43 | 278.37 | 278.37 | 1,530,400 |
| 2018-03-16 | 289.40 | 292.30 | 287.47 | 287.62 | 287.62 | 2,294,200 |
| 2018-03-15 | 286.48 | 288.26 | 285.13 | 286.70 | 286.70 | 1,342,900 |
| 2018-03-14 | 285.03 | 289.17 | 282.71 | 285.72 | 285.72 | 2,039,500 |
| 2018-03-13 | 282.21 | 286.54 | 280.52 | 283.24 | 283.24 | 2,258,600 |
| 2018-03-12 | 286.00 | 286.68 | 279.29 | 279.90 | 279.90 | 2,349,000 |
| 2018-03-09 | 285.87 | 286.76 | 281.70 | 286.10 | 286.10 | 1,715,000 |
| 2018-03-08 | 285.47 | 286.82 | 283.23 | 284.69 | 284.69 | 1,313,700 |
| 2018-03-07 | 285.47 | 285.83 | 282.00 | 284.54 | 284.54 | 1,404,900 |
| 2018-03-06 | 286.86 | 288.68 | 283.76 | 285.98 | 285.98 | 881,700 |
| 2018-03-05 | 284.16 | 288.13 | 282.59 | 286.95 | 286.95 | 904,300 |
| 2018-03-02 | 278.22 | 288.00 | 277.00 | 286.96 | 286.96 | 1,511,900 |
| 2018-03-01 | 288.11 | 291.44 | 281.36 | 282.35 | 282.35 | 2,339,200 |
| 2018-02-28 | 291.26 | 292.90 | 287.39 | 288.99 | 288.99 | 1,742,400 |
| 2018-02-27 | 290.83 | 294.03 | 289.42 | 290.10 | 290.10 | 1,697,400 |
| 2018-02-26 | 294.00 | 296.10 | 288.80 | 290.01 | 290.01 | 1,448,300 |
| 2018-02-23 | 287.59 | 294.24 | 285.60 | 292.78 | 292.78 | 2,541,500 |
| 2018-02-22 | 287.70 | 291.91 | 283.97 | 284.81 | 284.81 | 2,484,700 |
| 2018-02-21 | 287.56 | 290.66 | 285.11 | 286.10 | 286.10 | 1,922,400 |
| 2018-02-20 | 292.00 | 294.88 | 286.51 | 287.45 | 287.45 | 2,004,500 |
| 2018-02-16 | 297.75 | 298.50 | 290.88 | 291.87 | 291.87 | 2,943,100 |
| 2018-02-15 | 298.85 | 300.75 | 289.27 | 299.38 | 299.38 | 3,040,900 |
| 2018-02-14 | 315.36 | 316.45 | 288.00 | 296.08 | 296.08 | 5,426,400 |
| 2018-02-13 | 315.01 | 319.00 | 312.35 | 316.99 | 316.99 | 732,900 |
| 2018-02-12 | 319.25 | 323.18 | 315.50 | 316.63 | 316.63 | 1,331,000 |
| 2018-02-09 | 313.27 | 319.93 | 302.28 | 316.78 | 316.78 | 2,180,400 |
| 2018-02-08 | 326.67 | 328.70 | 311.50 | 311.79 | 311.79 | 1,414,600 |
| 2018-02-07 | 329.90 | 333.59 | 326.25 | 326.89 | 326.89 | 1,237,300 |
| 2018-02-06 | 322.52 | 332.95 | 321.11 | 332.86 | 332.86 | 1,768,200 |
| 2018-02-05 | 344.58 | 348.34 | 328.31 | 328.31 | 328.31 | 1,541,300 |
| 2018-02-02 | 343.98 | 348.69 | 342.31 | 343.83 | 343.83 | 1,095,000 |
| 2018-02-01 | 348.18 | 352.38 | 344.58 | 346.00 | 346.00 | 1,372,900 |
| 2018-01-31 | 357.34 | 359.61 | 345.72 | 347.81 | 347.81 | 1,398,000 |
| 2018-01-30 | 355.47 | 357.75 | 351.13 | 352.59 | 352.59 | 1,127,800 |
| 2018-01-29 | 365.15 | 367.90 | 357.47 | 358.48 | 358.48 | 1,317,200 |
| 2018-01-26 | 356.17 | 370.57 | 356.05 | 367.91 | 367.91 | 2,232,700 |
| 2018-01-25 | 358.00 | 358.00 | 341.21 | 353.74 | 353.74 | 1,863,000 |
| 2018-01-24 | 348.89 | 350.12 | 342.30 | 346.50 | 346.50 | 1,512,600 |
| 2018-01-23 | 348.00 | 354.28 | 345.74 | 346.75 | 346.75 | 1,186,200 |
| 2018-01-22 | 343.59 | 347.82 | 342.03 | 347.64 | 347.64 | 1,195,200 |
| 2018-01-19 | 347.57 | 347.57 | 341.82 | 342.41 | 342.41 | 1,232,200 |
| 2018-01-18 | 343.99 | 345.00 | 337.50 | 344.44 | 344.44 | 1,302,500 |
| 2018-01-17 | 339.72 | 347.78 | 337.28 | 344.87 | 344.87 | 1,429,000 |
| 2018-01-16 | 337.63 | 344.87 | 336.56 | 338.85 | 338.85 | 1,256,800 |
| 2018-01-12 | 333.31 | 336.61 | 331.51 | 335.95 | 335.95 | 885,500 |
| 2018-01-11 | 338.01 | 338.54 | 329.34 | 333.07 | 333.07 | 1,002,000 |
| 2018-01-10 | 334.59 | 339.94 | 331.84 | 336.72 | 336.72 | 973,400 |
| 2018-01-09 | 329.65 | 339.49 | 329.06 | 336.36 | 336.36 | 1,326,400 |
| 2018-01-08 | 341.45 | 341.94 | 327.26 | 329.65 | 329.65 | 1,438,800 |
| 2018-01-05 | 342.00 | 344.12 | 339.06 | 342.49 | 342.49 | 1,486,400 |
| 2018-01-04 | 339.73 | 341.40 | 335.46 | 339.99 | 339.99 | 967,100 |
| 2018-01-03 | 333.46 | 340.45 | 332.71 | 339.85 | 339.85 | 1,121,700 |
| 2018-01-02 | 321.15 | 335.43 | 318.33 | 334.17 | 334.17 | 1,422,500 |
| 2017-12-29 | 320.55 | 322.75 | 318.24 | 318.57 | 318.57 | 619,500 |
| 2017-12-28 | 320.60 | 322.38 | 319.26 | 320.33 | 320.33 | 660,000 |
| 2017-12-27 | 319.93 | 322.25 | 318.87 | 320.07 | 320.07 | 600,900 |
| 2017-12-26 | 319.45 | 320.14 | 316.25 | 319.78 | 319.78 | 653,600 |
| 2017-12-22 | 323.16 | 323.50 | 318.77 | 319.50 | 319.50 | 887,000 |
| 2017-12-21 | 319.75 | 328.60 | 319.05 | 322.52 | 322.52 | 2,212,900 |
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.