There is a long list of 512 institutional holders of ALNY within the last two holding periods in our database of 13F filers, so we've sorted through to present to you just the top 50 institutional holders of ALNY by largest to smallest position reported in the institutional investor's latest 13F filing. In the institutional-holders-of-ALNY table below, the initial column indicates the name of each top institutional holder of ALNY, with a link to that fund's top holdings. The next columns indicate the amount of ALNY stock held by each of the institutional holders of ALNY, followed by the ALNY position size held by the institution, and finally the date of the quarterly 13F filing period the holdings data represents for that institution.

Holder	Amount	Position Size ($ in 1000's)	As of
Steelhead Partners LLC		$54,514,900	12/31/2023
NOTE 1	55,000,000	$54,514,900	12/31/2023
Capital World Investors	16,174,563	$3,096,024	12/31/2023
ALNY	16,174,563	$3,096,024	12/31/2023
Vanguard Group Inc.	11,943,895	$2,286,181	12/31/2023
ALNY	11,943,895	$2,286,181	12/31/2023
FMR LLC		$1,982,338	12/31/2023
ALNY	10,312,356	$1,973,888	12/31/2023
NOTE 1	8,600,000	$8,450	12/31/2023
BlackRock Inc.		$1,638,248	12/31/2023
ALNY	8,521,115	$1,631,027	12/31/2023
NOTE 1	7,350,000	$7,221	12/31/2023
Wellington Management Group LLP		$1,391,789	12/31/2023
ALNY	7,214,198	$1,380,870	12/31/2023
NOTE 1	11,080,000	$10,919	12/31/2023
Baillie Gifford & Co.	6,967,097	$1,333,572	12/31/2023
ALNY	6,967,097	$1,333,572	12/31/2023
Dodge & Cox	3,674,310	$703,300	12/31/2023
ALNY	3,674,310	$703,300	12/31/2023
Capital International Investors	3,586,657	$686,641	12/31/2023
ALNY	3,586,657	$686,641	12/31/2023
Price T Rowe Associates Inc. MD	3,483,969	$666,867	12/31/2023
ALNY	3,483,969	$666,867	12/31/2023
T. Rowe Price Investment Management Inc.	3,426,063	$655,783	12/31/2023
ALNY	3,426,063	$655,783	12/31/2023
State Street Corp		$619,705	12/31/2023
ALNY	3,118,552	$596,922	12/31/2023
NOTE 1	22,958,000	$22,783	12/31/2023
JPMorgan Chase & Co.		$569,241	12/31/2023
ALNY	3,016,141	$577,320	12/31/2023
Put	62,800	$12,021	12/31/2023
Call	20,000	$3,828	12/31/2023
BOND	115,000	$114	12/31/2023
Capital Research Global Investors	2,930,079	$560,880	12/31/2023
ALNY	2,930,079	$560,880	12/31/2023
Norges Bank	2,039,798	$390,438	12/31/2023
ALNY	2,039,798	$390,438	12/31/2023
Geode Capital Management LLC	1,926,736	$368,199	12/31/2023
ALNY	1,926,736	$368,199	12/31/2023
RTW Investments LP	1,640,559	$314,019	12/31/2023
ALNY	1,640,559	$314,019	12/31/2023
Avoro Capital Advisors LLC	1,111,111	$212,678	12/31/2023
ALNY	1,111,111	$212,678	12/31/2023
Legal & General Group Plc	930,939	$178,191	12/31/2023
ALNY	930,939	$178,191	12/31/2023
Pictet Asset Management Holding SA	885,585	$169,510	12/31/2023
ALNY	885,585	$169,510	12/31/2023
Bellevue Group AG	885,318	$169,459	12/31/2023
ALNY	885,318	$169,459	12/31/2023
Morgan Stanley		$163,402	12/31/2023
ALNY	806,595	$154,391	12/31/2023
NOTE 1	9,160,000	$9,011	12/31/2023
Northern Trust Corp	764,520	$146,337	12/31/2023
ALNY	764,520	$146,337	12/31/2023
Amundi		$144,273	12/31/2023
ALNY	711,692	$141,057	12/31/2023
SR COCO 27	3,200,000	$3,216	12/31/2023
UBS Asset Management Americas Inc.	741,061	$141,846	12/31/2023
ALNY	741,061	$141,846	12/31/2023
Bank of New York Mellon Corp		$119,893	03/31/2024
ALNY	798,445	$119,327	03/31/2024
NOTE	600,000	$566	03/31/2024
Loomis Sayles & Co. L P	608,728	$116,517	12/31/2023
ALNY	608,728	$116,517	12/31/2023
Gilder Gagnon Howe & Co. LLC	587,045	$112,366	12/31/2023
ALNY	587,045	$112,366	12/31/2023
Nuveen Asset Management LLC		$105,839	12/31/2023
ALNY	543,411	$104,014	12/31/2023
NOTE 1	18,475,000	$1,825	12/31/2023
Alliancebernstein L.P.	520,839	$99,694	12/31/2023
ALNY	520,839	$99,694	12/31/2023
Deutsche Bank AG		$91,899	12/31/2023
ALNY	462,319	$88,492	12/31/2023
Call	17,800	$3,407	12/31/2023
TD Asset Management Inc.	466,085	$89,213	12/31/2023
ALNY	466,085	$89,213	12/31/2023
Charles Schwab Investment Management Inc.	438,304	$83,896	12/31/2023
ALNY	438,304	$83,896	12/31/2023
Invesco Ltd.		$81,039	12/31/2023
NOTE 1	48,026,000	$47,186	12/31/2023
ALNY	176,860	$33,853	12/31/2023
American Century Companies Inc.	414,944	$79,425	12/31/2023
ALNY	414,944	$79,425	12/31/2023
Swiss National Bank	390,800	$74,803	12/31/2023
ALNY	390,800	$74,803	12/31/2023
Linden Advisors LP		$74,436	12/31/2023
SDBCV	75,321,000	$74,436	12/31/2023
Ameriprise Financial Inc.	377,659	$72,288	12/31/2023
ALNY	377,659	$72,288	12/31/2023
Mitsubishi UFJ Trust & Banking Corp	349,120	$66,825	12/31/2023
ALNY	349,120	$66,825	12/31/2023
The Manufacturers Life Insurance Company	340,820	$65,236	12/31/2023
ALNY	340,820	$65,236	12/31/2023
Squarepoint Ops LLC	335,826	$64,280	12/31/2023
ALNY	335,826	$64,280	12/31/2023
Bank of America Corp DE		$60,358	12/31/2023
ALNY	316,233	$60,530	12/31/2023
Put	900	$172	12/31/2023
Royal London Asset Management Ltd.	308,824	$59,112	12/31/2023
ALNY	308,824	$59,112	12/31/2023
First Trust Advisors LP	306,693	$58,704	12/31/2023
ALNY	306,693	$58,704	12/31/2023
Calamos Advisors LLC		$55,866	12/31/2023
NOTE 1	56,363,000	$55,866	12/31/2023
Goldman Sachs Group Inc.	291,368	$55,771	12/31/2023
ALNY	291,368	$55,771	12/31/2023
Janus Henderson Group PLC	278,081	$53,229	12/31/2023
ALNY	278,081	$53,229	12/31/2023
CI Private Wealth LLC	274,696	$52,580	12/31/2023
ALNY	274,696	$52,580	12/31/2023
Royal Bank of Canada		$51,492	12/31/2023
ALNY	257,955	$49,375	12/31/2023
NOTE 1	2,155,000	$2,117	12/31/2023
Wells Fargo & Company MN		$51,447	12/31/2023
ALNY	229,630	$43,953	12/31/2023
NOTE 1	7,588,000	$7,494	12/31/2023

See All: Funds Holding ALNY
See Details: Top 10 Hedge Funds Holding ALNY
Also See: ALNY Insider Buying
Also See: ALNY Holdings Changes

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