Alnylam Pharmaceuticals Inc (ALNY) Ownership

145.16 ↓0.16 (-0.11%)

As of April 18, 2024, 3:59pm EST.

Institutions
Mutual Funds

Institutional Ownership

Nuveen Asset Management, LLC is the biggest individual institutional holder of Alnylam Pharmaceuticals Inc (ALNY), owning a total of 16.6 million shares. Combined, the top 31 institutional holders of ALNY own 94.69% of the company with a total of 118.9 million shares.

In the latest ownership report on December 31st 2023, the top 31 institutional holders increased their combined ownership of ALNY by 368 thousand shares. 12 institutions bought 3,524,133 total additional shares and increased their ownership by an average of 15.89%. However 8 institutions sold 3,156,252 total shares and decreased their ownership by an average of 5.55%.

Overall this is a positive sign as the number of shares owned by the top 20 institutional holders of Alnylam Pharmaceuticals increased by a net total of 367,881 in the latest quarter.

Institution Ownership Chart

Latest Institutional Ownership Changes

Owner	Percent Owned	Percent Change	Shares Owned	Share Change	Date Reported
Capital World Investors	12.843%	-2.146%	16,174,563	-354,745	2023-12-31
Vanguard Group Inc	9.483%	2.463%	11,943,895	287,064	2023-12-31
FMR Inc	8.188%	-8.590%	10,312,356	-969,050	2023-12-31
BlackRock Inc	6.766%	1.526%	8,521,115	128,111	2023-12-31
Wellington Management Company LLP	5.728%	12.164%	7,214,198	782,384	2023-12-31
Baillie Gifford & Co Limited.	5.532%	-14.652%	6,967,097	-1,196,042	2023-12-31
Dodge & Cox	2.917%	-1.944%	3,674,310	-72,845	2023-12-31
Capital Research & Mgmt Co - Division 3	2.848%	15.779%	3,586,657	488,814	2023-12-31
T. Rowe Price Associates, Inc.	2.766%	-11.237%	3,483,969	-441,035	2023-12-31
T. Rowe Price Investment Management,Inc.	2.720%	0.800%	3,426,063	27,204	2023-12-31
State Street Corporation	2.476%	7.554%	3,118,552	219,039	2023-12-31
JPMorgan Chase & Co	2.395%	-2.291%	3,016,141	-70,705	2023-12-31
Capital Research Global Investors	2.327%	5.253%	2,930,079	146,236	2023-12-31
NORGES BANK	1.620%	101.393%	2,039,798	1,026,952	2023-12-31
Geode Capital Management, LLC	1.530%	4.742%	1,926,736	87,231	2023-12-31
RTW INVESTMENTS, LLC	1.303%	-2.543%	1,640,559	-42,803	2023-12-31
venBio Select Advisor LLC	0.882%	9.890%	1,111,111	100,000	2023-12-31
Legal & General Group PLC	0.739%	17.148%	930,939	136,268	2023-12-31
Pictet Asset Manangement SA	0.703%	11.992%	885,585	94,830	2023-12-31
Bellevue Group AG	0.703%	-1.009%	885,318	-9,027	2023-12-31

Top Institutions

Owner	Percent Owned	Percent Change	Shares Owned	Share Change	Date Reported
Nuveen Asset Management, LLC	13.368%	5,486.110%	16,593,268	16,296,223	2022-09-30
Capital World Investors	12.843%	-2.146%	16,174,563	-354,745	2023-12-31
Vanguard Group Inc	9.483%	2.463%	11,943,895	287,064	2023-12-31
FMR Inc	8.188%	-8.590%	10,312,356	-969,050	2023-12-31
BlackRock Inc	6.766%	1.526%	8,521,115	128,111	2023-12-31
Wellington Management Company LLP	5.728%	12.164%	7,214,198	782,384	2023-12-31
Baillie Gifford & Co Limited.	5.532%	-14.652%	6,967,097	-1,196,042	2023-12-31
Dodge & Cox	2.917%	-1.944%	3,674,310	-72,845	2023-12-31
Capital Research & Mgmt Co - Division 3	2.848%	15.779%	3,586,657	488,814	2023-12-31
T. Rowe Price Associates, Inc.	2.766%	-11.237%	3,483,969	-441,035	2023-12-31
T. Rowe Price Investment Management,Inc.	2.720%	0.800%	3,426,063	27,204	2023-12-31
State Street Corporation	2.476%	7.554%	3,118,552	219,039	2023-12-31
JPMorgan Chase & Co	2.395%	-2.291%	3,016,141	-70,705	2023-12-31
Capital Research Global Investors	2.327%	5.253%	2,930,079	146,236	2023-12-31
NORGES BANK	1.620%	101.393%	2,039,798	1,026,952	2023-12-31
Geode Capital Management, LLC	1.530%	4.742%	1,926,736	87,231	2023-12-31
RTW INVESTMENTS, LLC	1.303%	-2.543%	1,640,559	-42,803	2023-12-31
Morgan Stanley - Brokerage Accounts	0.960%	-35.699%	1,209,383	-671,423	2023-09-30
Amundi	0.963%	31.921%	1,195,909	289,375	2022-09-30
venBio Select Advisor LLC	0.882%	9.890%	1,111,111	100,000	2023-12-31
Legal & General Group PLC	0.739%	17.148%	930,939	136,268	2023-12-31
Pictet Asset Manangement SA	0.703%	11.992%	885,585	94,830	2023-12-31
Bellevue Group AG	0.703%	-1.009%	885,318	-9,027	2023-12-31
Manufacturers Life Insurance Co	0.682%	-49.330%	839,015	-816,820	2022-09-30
Bank of New York Mellon Corp	0.665%	7.928%	837,084	61,488	2023-09-30
Northern Trust Corp	0.636%	3.266%	797,700	25,230	2023-09-30
Bank of America Corp	0.617%	154.348%	771,205	467,996	2023-03-31
Massachusetts Financial Services Company	0.615%	1.354%	765,772	10,230	2023-03-31
Loomis, Sayles & Company LP	0.608%	-9.701%	747,750	-80,329	2022-09-30
American Century Companies Inc	0.563%	20.535%	693,007	118,066	2022-09-30
AllianceBernstein L.P.	0.549%	1,093.920%	675,007	618,470	2022-06-30

Mutual Fund Ownership

American Funds Growth Fund of Amer A is the biggest individual fund holder of Alnylam Pharmaceuticals Inc (ALNY), owning a total of 8.1 million shares. Combined, the top 28 mutual fund holders of ALNY own 63.08% of the company with a total of 79.6 million shares.

In the latest ownership report on February 29th 2024, the top 28 fund holders increased their combined ownership of ALNY by 14 thousand shares. 1 funds bought 2,518 total additional shares and increased their ownership by an average of 0.14%. However 2 funds sold 16,806 total shares and decreased their ownership by an average of 0.26%.

Overall this is a negative sign as the number of shares owned by the top 20 mutual funds holding Alnylam Pharmaceuticals decreased by a net total of -14,288 in the latest report.

Mutual Funds Chart

Latest Mutual Fund Ownership Changes

Owner	Percent Owned	Percent Change	Shares Owned	Share Change	Date Reported
Vanguard Total Stock Mkt Idx Inv	3.125%	-0.236%	3,951,754	-9,362	2024-02-29
Vanguard Mid Cap Index Institutional	2.116%	-0.278%	2,675,266	-7,444	2024-02-29
Fidelity Growth Compy Commingled Pl O	1.507%	0.000%	1,906,033	0	2024-02-29
Vanguard Institutional Extnd Mkt Idx Tr	1.468%	0.136%	1,856,394	2,518	2024-02-29

Top Mutual Funds

Owner	Percent Owned	Percent Change	Shares Owned	Share Change	Date Reported
American Funds Growth Fund of Amer A	6.423%	2.377%	8,122,013	188,591	2023-12-31
Capital Group Growth Fnd of Amer Comp	6.423%	2.377%	8,122,013	188,591	2023-12-31
Vanguard Health Care Inv	4.369%	11.391%	5,524,903	564,985	2023-12-31
Vanguard Total Stock Mkt Idx Inv	3.125%	-0.236%	3,951,754	-9,362	2024-02-29
Vanguard Instl Ttl Stck Mkt Idx Tr	3.065%	2.745%	3,846,587	102,757	2023-03-31
Capital Group AMCAP Composite	2.638%	11.306%	3,336,323	338,883	2023-12-31
VA CollegeAmerica Amcap 529A	2.638%	11.306%	3,336,323	338,883	2023-12-31
American Funds New Perspective A	2.625%	-4.825%	3,318,681	-168,251	2023-12-31
Capital Group New Perspective Comp	2.625%	-4.825%	3,318,681	-168,251	2023-12-31
Fidelity Growth Compy Commingled Pl 3	2.197%	0.000%	2,746,210	0	2023-07-31
Vanguard Mid Cap Index Institutional	2.116%	-0.278%	2,675,266	-7,444	2024-02-29
Capital Group Fundamental Invtrs Comp	2.077%	2.240%	2,626,264	57,544	2023-12-31
American Funds Fundamental Invs A	2.077%	2.240%	2,626,264	57,544	2023-12-31
Dodge & Cox Stock I	1.856%	-2.119%	2,346,400	-50,800	2023-12-31
American Funds IS® Growth 1	1.678%	0.000%	2,121,508	0	2023-12-31
Capital Group Growth Composite	1.678%	0.000%	2,121,508	0	2023-12-31
Fidelity Growth Compy Commingled Pl O	1.507%	0.000%	1,906,033	0	2024-02-29
Vanguard Institutional Extnd Mkt Idx Tr	1.468%	0.136%	1,856,394	2,518	2024-02-29
Vanguard Extended Market Index Investor	1.389%	0.312%	1,736,048	5,407	2023-08-31
T. Rowe Price Mid-Cap Growth	1.321%	-0.233%	1,670,800	-3,900	2023-12-31
T. Rowe Price US Mid-Cap Growth Equity	1.321%	-0.233%	1,670,800	-3,900	2023-12-31
Fidelity® Growth Company	1.307%	-6.577%	1,640,658	-115,500	2023-11-30
T. Rowe Price Health Sciences	1.235%	7.633%	1,534,426	108,818	2022-12-31
T. Rowe Price New Horizons	1.220%	3.370%	1,519,629	49,538	2023-03-31
Fidelity Growth Company Fund	1.195%	-8.270%	1,504,980	-135,678	2023-12-31
US Small-Cap Growth II Equity Comp	1.193%	0.000%	1,496,556	1,496,556	2023-06-30
American Funds New Economy A	1.157%	0.000%	1,462,930	0	2023-12-31
Capital Group New Economy Comp	1.157%	0.000%	1,462,930	0	2023-12-31