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Alnylam Pharmaceuticals, Inc.

ALNY
Exchange
Nasdaq
Industry
Pharmaceutical Preparations
SEC CIK
0001178670

No open-market purchases or sales by Alnylam Pharmaceuticals, Inc. insiders were filed in the last 90 days; 794 institutions reported holding it in 13F filings for Q2 2026, worth $40.1B in total; no superinvestor holds it.

Q3 2025 vs. Q2 2025

How the institutions holding Alnylam Pharmaceuticals, Inc. changed between Q2 2025 and Q3 2025.

All holders in Q3 2025All holders in Q2 2025

13F holders of ALNY: Q2 2025 compared with Q3 2025
MeasureQ2 2025Of which not filed for Q3 2025Q3 2025Change
Holders6538823+178
Shares132.1M2.04M129.9M−193.8K (−0.1%)
Value$43.1B$666.5M$59.2B+$16.8B (+39.6%)

8 institutions that held it in Q2 2025 haven't filed for Q3 2025 yet. Not filing isn't selling, so the changes leave them out.

New holders (225)

Institutions that held Alnylam Pharmaceuticals, Inc. at the end of Q3 2025 but not at the end of Q2 2025.

Showing the largest 100 of 225 by value.

Institutions new to ALNY in Q3 2025
InstitutionSharesValue% of portfolio
Qube Research & Technologies Ltd811,278$369.9M0.52%
Massachusetts Financial Services Co356,529$162.6M0.05%
Susquehanna Advisors Group, Inc.286,100$130.5M4.02%
Congress Asset Management Co118,800$54.2M0.36%
Aquatic Capital Management LLC84,059$38.3M0.71%
Lord, Abbett & Co. LLC67,220$30.7M0.09%
AXA Investment Managers S.A.61,663$28.1M0.08%
Bronte Capital Management Pty Ltd.34,974$17.8M1.61%
Bridgewater Associates, LP33,911$15.5M0.06%
SG Americas Securities, LLC31,850$14.5M0.05%
ExodusPoint Capital Management, LP30,823$14.1M0.20%
Mediolanum International Funds Ltd25,451$11.4M0.12%
Twin Tree Management, LP16,005$7.30M0.34%
Quantessence Capital LLC15,874$7.24M2.29%
Rakuten Investment Management, Inc.31,152$6.58M0.03%
Linden Advisors LP14,364$6.55M0.04%
Campbell & CO Investment Adviser LLC12,697$5.79M0.44%
Fieldview Capital Management, LLC12,658$5.77M0.94%
Credit Agricole S A12,367$5.64M0.02%
CIBC World Markets Inc.12,116$5.52M0.01%
Alberta Investment Management Corp11,700$5.34M0.04%
Virtu Financial LLC11,656$5.32M0.30%
Dark Forest Capital Management LP11,598$5.29M0.20%
Headlands Technologies LLC10,192$4.65M0.37%
Diadema Partners LP10,000$4.56M3.18%
NWK Group, Inc.8,538$3.89M1.32%
Wolverine Asset Management LLC7,800$3.56M0.05%
Capula Management Ltd6,888$3.14M0.02%
Brevan Howard Capital Management LP6,170$2.81M0.04%
Bridgeway Capital Management, LLC6,030$2.75M0.06%
West Michigan Advisors, LLC5,396$2.46M0.59%
CIBC Bancorp USA Inc.4,675$2.13M0.01%
Donoghue Forlines LLC4,627$2.11M0.65%
Allstate Corp4,571$2.08M0.05%
Highland Capital Management, LLC4,569$2.08M0.10%
Aigen Investment Management, LP4,538$2.07M0.32%
Tokio Marine Asset Management Co Ltd4,444$2.03M0.07%
Rockefeller Capital Management L.P.4,380$2.00M0.00%
Soros Fund Management LLCSuperinvestorSoros Fund Management4,295$1.96M0.03%
Moore Capital Management, LP4,104$1.87M0.04%
Shaolin Capital Management LLC4,104$1.87M0.09%
Sona Asset Management (US) LLC4,104$1.87M0.07%
Janney Montgomery Scott LLC4,055$1.85M0.00%
Scientech Research LLC3,872$1.77M0.62%
Krilogy Financial LLC3,822$1.66M0.06%
Bamco Inc3,500$1.60M0.00%
Lighthouse Investment Partners, LLC3,500$1.60M0.06%
DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main3,500$1.60M0.00%
Sanders Morris Harris LLC3,150$1.44M0.19%
Fig Financial Advisory Services Inc2,812$1.28M0.80%
Western Financial Corp2,724$1.24M0.54%
FORA Capital, LLC2,719$1.24M0.22%
Y-Intercept (Hong Kong) Ltd2,614$1.19M0.03%
Persistent Asset Partners Ltd2,252$1.03M0.74%
Aristeia Capital LLC2,100$957.6K0.03%
Whitebox Advisors LLC2,100$957.6K0.02%
Pinkerton Retirement Specialists, LLC2,049$934.3K0.10%
CSS LLC2,010$916.6K0.05%
Fred Alger Management, LLC1,986$905.6K0.00%
Financiere des Professionnels - Fonds d,investissement inc.1,804$822.6K0.05%
Two Sigma Securities, LLC1,740$793.4K0.12%
Nomura Holdings Inc1,726$787.1K0.00%
Caerus Investment Advisors, LLC1,672$762.4K0.31%
R Squared Ltd1,660$757.0K0.33%
iA Global Asset Management Inc.1,647$751.0K0.01%
NorthCrest Asset Manangement, LLC1,605$737.5K0.02%
Orser Capital Management, LLC1,544$704.1K0.39%
CTC Alternative Strategies, Ltd.1,496$682.2K1.14%
Qtron Investments LLC1,471$670.8K0.08%
Private Advisory Group LLC1,419$647.1K0.06%
Freestone Grove Partners LP1,412$643.9K0.00%
Norden Group LLC1,411$643.4K0.07%
Cubist Systematic Strategies, LLC1,352$616.4K0.01%
Quantedge Capital Pte Ltd1,300$592.8K0.32%
DeepCurrents Investment Group LLC1,243$566.8K0.02%
Vinva Investment Management Ltd1,258$562.9K0.01%
Semanteon Capital Management, LP1,232$561.8K0.70%
HBK Investments L P1,231$561.3K0.01%
Capstone Investment Advisors, LLC1,231$561.3K0.00%
BlueCrest Capital Management Ltd1,231$561.3K0.03%
Calamos Advisors LLC1,200$547.2K0.00%
Perigon Wealth Management, LLC1,183$539.2K0.01%
Quantbot Technologies LP1,175$535.8K0.01%
Ground Swell Capital, LLC1,111$506.6K1.11%
Aaron Wealth Advisors1,109$505.7K0.03%
Sivia Capital Partners, LLC1,096$499.8K0.14%
NorthRock Partners, LLC1,094$498.9K0.01%
SIH Partners, LLLP1,020$465.1K0.04%
Waddell & Associates, LLC1,018$464.2K0.04%
Virtue Capital Management, LLC4,121$463.6K0.10%
Full Sail Capital, LLC1,015$462.8K0.03%
Chicago Partners Investment Group LLC972$462.6K0.01%
Yeomans Consulting Group, Inc.984$453.3K0.16%
Jackson Thornton Asset Management, LLC918$413.7K0.04%
Transcend Wealth Collective, LLC899$409.9K0.03%
Evoke Wealth, LLC896$408.6K0.01%
Savant Capital, LLC883$402.6K0.00%
Warren Averett Asset Management, LLC865$394.4K0.00%
SkyOak Wealth, LLC847$386.2K0.07%
CAPROCK Group, Inc.857$382.7K0.01%

Sold out (47)

Institutions that held Alnylam Pharmaceuticals, Inc. at the end of Q2 2025 and filed for Q3 2025 without it.

Institutions that sold out of ALNY in Q3 2025
InstitutionShares, Q2 2025Value, Q2 2025
Tri Locum Partners LP89,525$29.2M
Adage Capital Partners GP, L.L.C.84,390$27.5M
AXA S.A.82,480$26.9M
PFM Health Sciences, LP72,220$23.6M
Cercano Management LLC56,953$18.6M
Ikarian Capital, LLC56,594$18.5M
Iron Triangle Partners LP29,339$9.57M
Cinctive Capital Management LP22,868$7.46M
Boothbay Fund Management, LLC19,213$6.27M
First Turn Management, LLC17,879$5.83M
Mirae Asset Securities (USA) Inc.13,034$4.25M
Readystate Asset Management LP11,601$3.78M
Portman Square Capital LLP6,967$2.27M
Sivik Global Healthcare LLC6,500$2.12M
Hussman Strategic Advisors, Inc.6,300$2.05M
V-Square Quantitative Management LLC1,692$551.7K
Bryn Mawr Trust Co1,686$549.8K
Ewing Morris & Co. Investment Partners Ltd.1,440$469.6K
Banco Santander, S.A.1,245$406.0K
Quantitative Investment Management, LLC1,238$403.0K
Group One Trading, L.P.1,134$369.8K
Jupiter Asset Management Ltd974$317.6K
Eqis Capital Management, Inc.934$304.6K
Nebula Research & Development LLC900$293.5K
ICONIQ Capital, LLC806$262.8K
Strategic Financial Concepts, LLC750$244.6K
GTS Securities LLC747$243.6K
Flow Traders U.S. LLC740$241.0K
Volterra Technologies LP490$159.8K
Skopos Labs, Inc.481$156.6K
Catalyst Capital Advisors LLC453$147.7K
Tobam353$115.0K
Geneos Wealth Management Inc.238$77.6K
New York State Teachers Retirement System191$62.0K
Mount Yale Investment Advisors, LLC113$36.8K
Sierra Ocean, LLC68$22.2K
Whipplewood Advisors, LLC42$13.7K
MB, Levis & Associates, LLC35$11.4K
Twin Peaks Wealth Advisors, LLC15$6.25K
Riggs Asset Managment Co. Inc.17$5.54K
Curio Wealth, LLC10$3.26K
HHM Wealth Advisors, LLC7$2.28K
Trifecta Capital Advisors, LLC7$2.28K
WealthTrak Capital Management LLC6$1.96K
Garde Capital, Inc.5$1.63K
Stephens Consulting, LLC5$1.63K
Richardson Financial Services Inc.5$1.63K

Not filed for Q3 2025 yet (8)

Institutions that held Alnylam Pharmaceuticals, Inc. at the end of Q2 2025 and haven't filed a 13F for Q3 2025. Not filing isn't selling, so they aren't counted as sold out.

Institutions holding ALNY in Q2 2025 that haven't filed for Q3 2025
InstitutionShares, Q2 2025Value, Q2 2025
Norges Bank2,032,680$662.8M
CIBC World Markets Corp5,417$1.77M
E Fund Management Co., Ltd.3,594$1.17M
Avantax Advisory Services, Inc.1,446$471.5K
EP Wealth Advisors, LLC713$232.5K
First Horizon Advisors, Inc.187$61.0K
Semmax Financial Advisors Inc.14$6.15K
Parkworth Wealth Management, Inc.4$1.30K