Prices delayed by 15 minutes
The series is stated in the current share scale after splits; dividends are not included in the price
| Date | Open | High | Low | Close | Volume, shares |
|---|---|---|---|---|---|
| September 16, 2026 | 216.41 | 218.29 | 214.81 | 216.01 | 606,483 |
| September 15, 2026 | 216.71 | 216.71 | 213.54 | 216.17 | 756,000 |
| September 14, 2026 | 221.00 | 222.25 | 215.56 | 217.36 | 629,900 |
| September 11, 2026 | 216.75 | 219.76 |
Based on reports through December 31, 2025
Biogen was built on multiple sclerosis drugs and is making a large bet on treating Alzheimer's disease.
The historical foundation is a range of multiple sclerosis treatments that supplied most of the profit for many years. It is shrinking: patents expired, generics arrived and competitors offered more convenient regimens. That slow contraction defines the company's results.
The replacement is sought in neurology: drugs for Alzheimer's disease and spinal muscular atrophy. The Alzheimer's line proved hard — the first approved drug was withdrawn after disputes over whether the effect was demonstrated, and the second is advancing slowly because it requires diagnosis and monitoring the health system is not equipped for. The company pays no dividend.
Address:225 BINNEY STREET, CAMBRIDGE, MA, 02142, US
| 350m |
| TWSTTwist Bioscience Corporation | 157.26 | +9.92 % | 214m |
| HALOHalozyme Therapeutics, Inc. | 109.72 | +1.18 % | 211m |
| TECHBio-Techne Corp | 72.47 | +0.19 % | 186m |
| NBIXNeurocrine Biosciences, Inc. | 151.41 | +127.80 % | 173m |
| 214.71 |
| 217.15 |
| 1m |
| September 10, 2026 | 209.92 | 216.70 | 208.93 | 215.43 | 936,600 |
| September 09, 2026 | 210.50 | 213.48 | 209.00 | 210.73 | 694,600 |
| September 08, 2026 | 215.45 | 217.28 | 210.54 | 212.50 | 617,600 |
| September 04, 2026 | 221.15 | 223.82 | 219.82 | 220.83 | 465,100 |
| September 03, 2026 | 225.44 | 225.80 | 221.23 | 224.51 | 550,700 |
| September 02, 2026 | 218.20 | 225.59 | 216.97 | 222.67 | 1m |
| September 01, 2026 | 218.11 | 219.30 | 213.60 | 216.04 | 785,500 |
| August 31, 2026 | 216.47 | 218.89 | 213.58 | 216.65 | 831,000 |
| August 28, 2026 | 221.17 | 222.00 | 216.78 | 218.50 | 517,400 |
| August 27, 2026 | 219.39 | 222.11 | 217.53 | 221.50 | 497,300 |
| August 26, 2026 | 219.34 | 222.00 | 218.69 | 221.07 | 647,200 |
| August 25, 2026 | 218.93 | 222.85 | 218.00 | 220.77 | 495,400 |
| August 24, 2026 | 216.40 | 218.50 | 213.96 | 218.12 | 649,800 |
| August 21, 2026 | 217.76 | 219.12 | 215.00 | 216.78 | 722,300 |
| August 20, 2026 | 217.98 | 221.29 | 214.16 | 214.35 | 808,600 |
| August 19, 2026 | 215.33 | 222.15 | 215.08 | 221.56 | 886,800 |