ALNY

Alnylam Pharmaceuticals Inc · NASDAQ NMS - GLOBAL MARKET · Biotechnology

$319.52$-10.82 (-3.28%)

Prices delayed up to 5 minutes

AC Intelligence

AC Intelligence for ALNY is being prepared.

Key Stats

Open

$319.48

Day High

$322.35

Day Low

$313.54

Prev Close

$330.34

Volume

Avg Volume

—

Day Change

$-10.82

Change %

-3.28%

Fundamentals

P/E

134.8

P/B

66.57

EPS (TTM)

$2.25

Market Cap

$42286.84T

52-Wk Range

$205.87 — $495.55

What is P/E? →Stock fundamentals explained →

Earnings History

Insider Activity

Who Owns This Stock

Who Owns ALNY

Quality / Compounder38.9%45 holders

Passive / Index25.2%11 holders

Other22.6%710 holders

Dealer / Bank8.8%35 holders

Growth / Momentum2.0%2 holders

Systematic / Quant1.9%12 holders

Deep Value1.5%1 holder

Income / Defensive1.0%20 holders

Activist0.6%1 holder

Based on Q4 2025 13F filings + AC behavioral model

843 institutional holders

Top Holders

1.▼Capital World Investorsquality_compounder

-0.8%$6482389.0B

2.▲Vanguard Grouppassive_index

$4929696.1B

3.▼Fidelity Managementquality_compounder

-6.1%$4764784.7B

4.▼Capital Research Global Investorsquality_compounder

-6.1%$2695946.0B

5.▲JPMORGAN CHASE & COdealer_bank

$1588391.8B

6.▲BlackRock, Inc.passive_index

$1538711.0B

7.★State Streetdealer_bank

$1283994.4B

8.▲BlackRock, Inc.passive_index

$1260559.6B

9.▼Fidelity Managementquality_compounder

-79.1%$1058726.8B

10.▲Geode Capital Managementpassive_index

+702.8%$930917.2B

11.★NORGES BANKquality_compounder

$895816.0B

12.▼Dodge & Coxdeep_value

-15.4%$781149.6B

13.★Orbis Allan Gray Ltdother_unclassified

$642660.9B

14.★WELLINGTON MANAGEMENT GROUP LLPother_unclassified

$620033.8B

15.▼AMERICAN CENTURY COMPANIES INCquality_compounder

-9.5%$590576.6B

16.★Invesco Ltdpassive_index

$480079.3B

17.★TWO SIGMA ADVISERS, LPother_unclassified

$450362.5B

18.▼ARROWSTREET CAPITAL, LIMITED PARTNERSHIPsystematic_quant

-16.9%$448216.0B

19.▲BlackRock, Inc.passive_index

+226.0%$357604.7B

20.▲BAILLIE GIFFORD & COgrowth_momentum

+13.9%$354256.4B

Institutional Pressure

Market Regime:Strong Risk-Off (-0.62)

SELLINGBUYING

▲

Neutral

Quality / Compounder(38.9%)

●

Holds through

Passive / Index(25.2%)

●

Holds

Other(22.6%)

●

—

Dealer / Bank(8.8%)

●

Facilitating

Growth / Momentum(2.0%)

●

Likely trimming

Systematic / Quant(1.9%)

●

De-risking (mechanical)

Deep Value(1.5%)

●

Possible buyer

Income / Defensive(1.0%)

●

Inflows (flight to yield)

Activist(0.6%)

●

May accumulate

Tactical / Macro(0.5%)

●

Reducing rapidly

64% passive + quality floor won't sell.

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

Sentiment Signals

→Insider ActivityNo insider transactions in last 90 daysSEC Form 4

↑Analyst Consensus27 buy, 9 hold, 0 sellFinnhub

↑↑Inst. Flows904 increased/new, 337 decreased/exited (13F)AC 13F Analysis

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

On AcidCapitalist

No recent mentions of ALNY on AcidCapitalist.

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