BI
BIIB
-1.1%⚪ No clear catalystBiogen Inc. Common Stock · Healthcare
$232.65Vol 1.46M · 1.1× normalMkt cap −$0.40BMarket closed — 2026-10-16 session
What happened
Move
-1.1%
Price
$232.65
Volume
1.46M
1.1× normal
Market cap
$34.37B
−$0.40B today
Why it moved
Market-wide movelow confidence
- Market-wide move — computed
- Biogen: The Bull Case Is Extending Beyond Alzheimer's (Rating Upgrade) — finnhub-news
Market-wide move — the stock is tracking broad market movement; no company-specific catalyst detected.
Verdict — was the move justified?
⚪ No clear catalyst
No reliable catalyst was identified for this move.
How unusual is this move
σ score
1.2σ
vs own 20d volatility
Percentile
52th
of 1278 daily moves
Avg daily move
±1.4%
own 5y average
Fundamental context
V 52G 25P 43H 85Q 64EW 31/65
Insider activity (90d): net selling $239.7K
Valuation context
P/E (TTM)
41.2
5y median 19.5
P/E percentile
100%
vs own 5y history
FCF yield
0.1%
Trading richer than 100% of its own historical valuation range.
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