Biogen (BIIB) earnings, Oct 28, 2026: EPS −46%, stock −3.4%
In brief
Biogen reported on Oct 28, 2026. Earnings per share changed −46% year over year, 31.5% above the estimate; revenue +11%. The stock opened with a −3.1% gap and closed the day −3.4% (Oct 28, 2026). The stock is now 5.7% below its 52-week high, +59.0% over 12 months. Next report: Feb 17, 2027.
EPS vs estimate+31.5%
EPS, YoY−46%
Revenue, YoY+11%
Gap · day−3.1% · −3.4%
EPS growth by quarter, YoY
Price reaction to earnings
| Report | Gap | Day |
|---|---|---|
| Jul 29, 2026 | +2.4% | +1.8% |
| Oct 28, 2026 | −3.1% | −3.4% |
Next-quarter estimates, ratings and the BIIB chart are in the terminal.
Open the terminalFAQ
When is Biogen's next earnings report?
Feb 17, 2027. The date comes from daily data and is corrected if the company moves it.
How did Biogen stock react to the report?
Opening gap −3.1%, day's result −3.4%.
Did Biogen's earnings grow?
Earnings per share fell 46% year over year.
What is an earnings gap?
The jump between the close before and the open after the report. A big gap up often means large buyers are revaluing the company.