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BIIB

Biogen Inc · NASDAQ NMS - GLOBAL MARKET · Biotechnology

$173.78+$1.44 (+0.84%)

Prices delayed up to 5 minutes

AC Intelligence

AC Intelligence

AC Intelligence for BIIB is being prepared.

Key Stats

Key Stats

Open

$172.27

Day High

$174.48

Day Low

$170.43

Prev Close

$172.34

Volume

0

Avg Volume

—

Day Change

+$1.44

Change %

+0.84%

Fundamentals

Fundamentals

P/E

20.1

P/B

1.41

EPS (TTM)

$8.81

Market Cap

$26026.24T

52-Wk Range

$110.03 — $202.41

What is P/E? →Stock fundamentals explained →

Who Owns This Stock

Who Owns BIIB

Other31.4%860 holders
Passive / Index29.9%11 holders
Quality / Compounder23.9%38 holders
Dealer / Bank9.0%36 holders
Tactical / Macro1.9%5 holders
Income / Defensive1.5%24 holders
Systematic / Quant1.4%13 holders
Deep Value1.2%2 holders

Based on Q4 2025 13F filings + AC behavioral model

991 institutional holders

Top Holders

1.▲Vanguard Group
+0.7%$2812686.3B
2.▼PRIMECAP MANAGEMENT CO/CA/
-1.3%$2597259.9B
3.★State Street
$1259915.9B
4.▲Fidelity Management
$1058341.4B
5.▲BlackRock, Inc.
+11.0%$1009194.2B
6.▲Geode Capital Management
+802.2%$658359.8B
7.★WELLINGTON MANAGEMENT GROUP LLP
$604249.3B
8.▼BlackRock, Inc.
-42.1%$526453.1B
9.★ARK Invest
$495093.7B
10.★NORGES BANK
$464408.4B
11.▼BlackRock, Inc.
-68.2%$288820.4B
12.★AQR Capital Management
$263825.9B
13.▲Invesco Ltd
+778.5%$244222.6B
14.★Boston Partners
$229508.4B
15.▲Fidelity Management
+498.0%$226177.9B
16.▲Barclays PLC
$210107.9B
17.★Pacer Advisors, Inc.
$201665.2B
18.★Pacer Advisors, Inc.
$201665.2B
19.▲Charles Schwab Investment Mgmt
+1.8%$201315.3B
20.★Point72
$198091.9B

Institutional Pressure

Market Regime:Strong Risk-Off (-0.62)
SELLINGBUYING
▲
Mild Selling Pressure
Other(31.4%)
●
—
Passive / Index(29.9%)
●
Holds
Quality / Compounder(23.9%)
●
Holds through
Dealer / Bank(9.0%)
●
Facilitating
Tactical / Macro(1.9%)
●
Reducing rapidly
Income / Defensive(1.5%)
●
Inflows (flight to yield)
Systematic / Quant(1.4%)
●
De-risking (mechanical)
Deep Value(1.2%)
●
Possible buyer
Activist(0.1%)
●
May accumulate
Growth / Momentum(0.0%)
●
Likely trimming

54% passive + quality floor won't sell.

Updated daily · Based on Q4 2025 filings + AC behavioral model

Sentiment Signals

Sentiment Signals

→Insider ActivityNo insider transactions in last 90 daysSEC Form 4
→Analyst Consensus20 buy, 22 hold, 1 sellFinnhub
↑↑Inst. Flows990 increased/new, 376 decreased/exited (13F)AC 13F Analysis

Sources: SEC Form 4, Finnhub, AC 13F Analysis

On AcidCapitalist

On AcidCapitalist

No recent mentions of BIIB on AcidCapitalist.

Data provided by Finnhub. Prices delayed up to 5 minutes.