There is a long list of 110 institutional holders of SLRN 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 SLRN by largest to smallest position reported in the institutional investor's latest 13F filing. In the institutional-holders-of-SLRN table below, the initial column indicates the name of each top institutional holder of SLRN, with a link to that fund's top holdings. The next columns indicate the amount of SLRN stock held by each of the institutional holders of SLRN, followed by the SLRN 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
AyurMaya Capital Management Company LP	9,334,735	$69,637	12/31/2023
SLRN	9,334,735	$69,637	12/31/2023
FMR LLC	8,822,271	$65,814	12/31/2023
SLRN	8,822,271	$65,814	12/31/2023
Citadel Advisors LLC		$48,763	12/31/2023
SLRN	6,474,048	$48,296	12/31/2023
Call	92,300	$689	12/31/2023
Put	29,800	$222	12/31/2023
Vanguard Group Inc.	6,155,910	$45,923	12/31/2023
SLRN	6,155,910	$45,923	12/31/2023
Opaleye Management Inc.	4,146,138	$30,930	12/31/2023
SLRN	4,146,138	$30,930	12/31/2023
Orbimed Advisors LLC	4,001,711	$29,853	12/31/2023
SLRN	4,001,711	$29,853	12/31/2023
venBio Partners LLC	3,852,470	$28,739	12/31/2023
SLRN	3,852,470	$28,739	12/31/2023
JPMorgan Chase & Co.	3,188,477	$23,786	12/31/2023
SLRN	3,188,477	$23,786	12/31/2023
Artal Group S.A.	3,035,888	$22,648	12/31/2023
SLRN	3,035,888	$22,648	12/31/2023
BlackRock Inc.	2,907,558	$21,690	12/31/2023
SLRN	2,907,558	$21,690	12/31/2023
Tybourne Capital Management HK Ltd.	2,906,629	$21,683	12/31/2023
SLRN	2,906,629	$21,683	12/31/2023
General Atlantic LLC	2,889,668	$21,557	12/31/2023
SLRN	2,889,668	$21,557	12/31/2023
Samsara BioCapital LLC	2,523,022	$18,822	12/31/2023
SLRN	2,523,022	$18,822	12/31/2023
Ikarian Capital LLC		$17,366	12/31/2023
SLRN	1,991,005	$14,853	12/31/2023
Call	336,900	$2,513	12/31/2023
Blue Owl Capital Holdings LP	2,292,990	$17,106	12/31/2023
SLRN	2,292,990	$17,106	12/31/2023
Janus Henderson Group PLC	1,602,155	$11,952	12/31/2023
SLRN	1,602,155	$11,952	12/31/2023
Decheng Capital LLC	1,370,951	$10,227	12/31/2023
SLRN	1,370,951	$10,227	12/31/2023
Logos Global Management LP	1,250,000	$9,325	12/31/2023
SLRN	1,250,000	$9,325	12/31/2023
Kynam Capital Management LP	1,200,000	$8,952	12/31/2023
SLRN	1,200,000	$8,952	12/31/2023
Goldman Sachs Group Inc.	1,118,911	$8,347	12/31/2023
SLRN	1,118,911	$8,347	12/31/2023
RTW Investments LP	978,310	$7,298	12/31/2023
SLRN	978,310	$7,298	12/31/2023
Woodline Partners LP	948,559	$7,076	12/31/2023
SLRN	948,559	$7,076	12/31/2023
VR Adviser LLC	937,113	$6,991	12/31/2023
SLRN	937,113	$6,991	12/31/2023
Marshall Wace LLP	894,182	$6,671	12/31/2023
SLRN	894,182	$6,671	12/31/2023
Morgan Stanley	881,719	$6,578	12/31/2023
SLRN	881,719	$6,578	12/31/2023
Franklin Resources Inc.	805,668	$6,010	12/31/2023
SLRN	805,668	$6,010	12/31/2023
Geode Capital Management LLC	774,131	$5,776	12/31/2023
SLRN	774,131	$5,776	12/31/2023
State Street Corp	664,938	$4,960	12/31/2023
SLRN	664,938	$4,960	12/31/2023
StemPoint Capital LP	587,373	$4,382	12/31/2023
SLRN	587,373	$4,382	12/31/2023
Walleye Capital LLC	577,492	$4,308	12/31/2023
SLRN	577,492	$4,308	12/31/2023
Kennedy Capital Management Inc.	474,006	$3,536	12/31/2023
SLRN	474,006	$3,536	12/31/2023
Point72 Asset Management L.P.	444,992	$3,320	12/31/2023
SLRN	444,992	$3,320	12/31/2023
DAFNA Capital Management LLC	371,200	$2,769	12/31/2023
SLRN	371,200	$2,769	12/31/2023
Eagle Asset Management Inc.	358,734	$2,676	12/31/2023
SLRN	358,734	$2,676	12/31/2023
Superstring Capital Management LP	356,924	$2,663	12/31/2023
SLRN	356,924	$2,663	12/31/2023
Sectoral Asset Management Inc	325,549	$2,429	12/31/2023
SLRN	325,549	$2,429	12/31/2023
Vontobel Holding Ltd.	325,549	$2,429	12/31/2023
SLRN	325,549	$2,429	12/31/2023
Northern Trust Corp	290,455	$2,167	12/31/2023
SLRN	290,455	$2,167	12/31/2023
Charles Schwab Investment Management Inc.	247,756	$1,848	12/31/2023
SLRN	247,756	$1,848	12/31/2023
Adage Capital Partners GP L.L.C.	180,000	$1,343	12/31/2023
SLRN	180,000	$1,343	12/31/2023
Boothbay Fund Management LLC		$1,301	12/31/2023
SLRN	100,346	$749	12/31/2023
Call	74,000	$552	12/31/2023
Bank of New York Mellon Corp	182,337	$1,231	03/31/2024
SLRN	182,337	$1,231	03/31/2024
Cubist Systematic Strategies LLC	158,967	$1,186	12/31/2023
SLRN	158,967	$1,186	12/31/2023
Point72 Europe London LLP	122,971	$917	12/31/2023
SLRN	122,971	$917	12/31/2023
Voloridge Investment Management LLC	103,677	$773	12/31/2023
SLRN	103,677	$773	12/31/2023
Ameriprise Financial Inc.	96,691	$721	12/31/2023
SLRN	96,691	$721	12/31/2023
Susquehanna International Group LLP		$712	12/31/2023
Call	95,500	$712	12/31/2023
Put	23,000	$172	12/31/2023
SLRN	23,096	$172	12/31/2023
Lighthouse Investment Partners LLC	86,651	$646	12/31/2023
SLRN	86,651	$646	12/31/2023
Bank of America Corp DE	83,280	$621	12/31/2023
SLRN	83,280	$621	12/31/2023
Prudential Financial Inc.	78,443	$585	12/31/2023
SLRN	78,443	$585	12/31/2023