ACELYRIN, Inc.

SLRNDelisted May 21, 2025

Industry: Pharmaceutical Preparations
SEC CIK: 0001962918

SEC filings (opens in a new tab)

ACELYRIN, Inc. was delisted on May 21, 2025; its insiders filed their last Form 4 on May 23, 2025; 106 institutions reported holding it in 13F filings for Q1 2025, worth $182.6M in total; no superinvestor held it.

Q2 2024 vs. Q1 2024

How the institutions holding ACELYRIN, Inc. changed between Q1 2024 and Q2 2024.

All holders in Q2 2024 All holders in Q1 2024

13F holders of SLRN: Q1 2024 compared with Q2 2024
Measure	Q1 2024	Of which not filed for Q2 2024	Q2 2024	Change
Holders	109	1	113	+5
Shares	90.9M	2.29K	87.0M	−3.84M (−4.2%)
Value	$613.2M	$15.0K	$383.7M	−$229.5M (−37.4%)

1 institution that held it in Q1 2024 haven't filed for Q2 2024 yet. Not filing isn't selling, so the changes leave them out.

New holders (26)

Institutions that held ACELYRIN, Inc. at the end of Q2 2024 but not at the end of Q1 2024.

Institutions new to SLRN in Q2 2024
Institution	Shares	Value	% of portfolio
Almitas Capital LLC	376,116	$1.66M	0.69%
Two Sigma Advisers, LP	200,400	$883.8K	0.00%
Susquehanna Fundamental Investments, LLC	160,167	$706.3K	0.02%
Los Angeles Capital Management LLC	157,093	$692.8K	0.00%
Acadian Asset Management LLC	134,184	$590.0K	0.00%
Two Sigma Investments, LP	123,470	$544.5K	0.00%
PDT Partners, LLC	103,853	$458.0K	0.04%
HRT Financial LP	82,828	$365.0K	0.00%
Squarepoint Ops LLC	78,023	$344.1K	0.00%
Dynamic Technology Lab Private Ltd	60,330	$266.0K	0.03%
XTX Topco Ltd	43,300	$191.0K	0.02%
Corebridge Financial, Inc.	39,269	$173.2K	0.00%
Mirae Asset Global ETFs Holdings Ltd.	37,421	$165.0K	0.00%
Thrivent Financial for Lutherans	37,341	$164.0K	0.00%
Oxford Asset Management LLP	12,276	$54.1K	0.05%
SG Americas Securities, LLC	11,654	$51.0K	0.00%
Principal Financial Group Inc	11,038	$48.7K	0.00%
Federated Hermes, Inc.	5,386	$23.8K	0.00%
Mirae Asset Global Investments Co., Ltd.	2,956	$11.7K	0.00%
BFSG, LLC	1,900	$8.38K	0.00%
Catalyst Funds Management Pty Ltd	1,000	$4.41K	0.00%
Redwood Wealth Management Group, LLC	1,000	$4.41K	0.00%
SRS Capital Advisors, Inc.	185	$816	0.00%
Clearstead Advisors, LLC	114	$503	0.00%
The PNC Financial Services Group, Inc.	53	$234	0.00%
Rothschild Investment LLC	30	$132	0.00%

Sold out (21)

Institutions that held ACELYRIN, Inc. at the end of Q1 2024 and filed for Q2 2024 without it.

Institutions that sold out of SLRN in Q2 2024
Institution	Shares, Q1 2024	Value, Q1 2024
VR Adviser, LLC	937,113	$6.33M
Eagle Asset Management Inc	946,521	$6.30M
StemPoint Capital LP	714,773	$4.82M
Sectoral Asset Management Inc	244,000	$1.65M
Lighthouse Investment Partners, LLC	115,808	$781.7K
Dark Forest Capital Management LP	72,450	$489.0K
American International Group, Inc.	35,793	$241.6K
Capstone Investment Advisors, LLC	31,506	$212.7K
Virtu Financial LLC	21,834	$147.0K
Simplex Trading, LLC	18,429	$124.0K
Arrowstreet Capital, Limited Partnership	17,821	$120.0K
Landscape Capital Management, L.L.C.	17,517	$118.2K
Raymond James & Associates	11,364	$76.7K
Belvedere Trading LLC	5,731	$38.7K
Metropolitan Life Insurance Co	3,931	$26.5K
Quarry LP	3,000	$20.3K
GAMMA Investing LLC	678	$4.58K
Lindbrook Capital, LLC	170	$1.15K
Comerica Bank	53	$357
Institutional & Family Asset Management, LLC	16	$108
Nelson, Van Denburg & Campbell Wealth Management Group, LLC	7	$47

Not filed for Q2 2024 yet (1)

Institutions that held ACELYRIN, Inc. at the end of Q1 2024 and haven't filed a 13F for Q2 2024. Not filing isn't selling, so they aren't counted as sold out.

Institutions holding SLRN in Q1 2024 that haven't filed for Q2 2024
Institution	Shares, Q1 2024	Value, Q1 2024
Cutler Group LP	2,294	$15.0K