This is the standing evidence sheet for Biogen (BIIB): the yardsticks BullScope computes from official SEC filings and market prices. It refreshes whenever a new edition of our research is published, and it is impersonal by design, every reader sees the same page. Nothing here is investment advice; it is the evidence, organized.
The price tag: what buyers pay per dollar of profit
Today the market pays about $25.3 for each $1 of Biogen’s annual profit (a price-to-earnings ratio of 25.3). Across its own past decade the typical price tag was 18.6, which puts today at roughly the 81th percentile of the company’s own history.
The tape: what the stock itself has done
- Last price: $216.65 (end-of-day market data as of the edition date · methodology) · 2% below its 52-week high
- Past 6 months: +15.2% · past 12 months: +63.3%
- Day-to-day temperament: jumpy (annualized volatility 35%)
The filed record: straight from the annual reports
| Fiscal year | Revenue | Growth | Operating margin | EPS |
|---|---|---|---|---|
| FY2021 | $11.0B | , | 25.9% | $10.4 |
| FY2022 | $10.2B | -7.4% | None% | $20.87 |
| FY2023 | $9.8B | -3.3% | None% | $7.97 |
| FY2024 | $9.7B | -1.6% | None% | $11.18 |
| FY2025 | $9.9B | +2.2% | 15.7% | $8.79 |
The road ahead: filed results vs published expectations
| FY2023A | FY2024A | FY2025A | FY2026E | FY2027E | |
|---|---|---|---|---|---|
| Net sales ($B) | 9.8 | 9.7 | 9.9 | 9.8 to 11.2 | 9.5 to 11.5 |
| Net sales growth (%) | – | −1.0 | +2.1 | 6 | -3 |
| Operating margin (%) | ~0 | ~0 | ~16.2 | 12.0 to 16.5 | 12.0 to 17.0 |
| Diluted EPS ($) | 7.97 | 11.18 | 8.79 | 6.50 to 10.50 | 5.50 to 11.50 |
Columns marked A are actual filed results; E columns are the published consensus ranges the current price is being weighed against.
The four gauges: from the latest edition
BullScope coverage of Biogen
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Edition date: 2026-08-21. This page updates when a new edition is published. Sources: SEC EDGAR filings, Nasdaq prices; computed by BullScope’s published methodology.
