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Acelyrin (SLRN) Institutional Ownership

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Institutional Ownership Changes (13F Filings) for Acelyrin (NASDAQ:SLRN)

Current
Institutional Ownership
Percentage
87.31%
Number of
Institutional Buyers
(last 12 months)
53
Total
Institutional Inflows
(last 12 months)
$40.56M
Number of
Institutional Sellers
(last 12 months)
34
Total
Institutional Outflows
(last 12 months)
$71.14M
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SLRN Institutional Buying and Selling by Quarter

Acelyrin Major Shareholders & Ownership History

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Reporting DateMajor Shareholder NameShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails
6/27/2025Goldman Sachs Group Inc.351,407$868K0.0%-38.3%0.348%
5/29/2025Rhumbline Advisers102,174$252K0.0%-5.6%0.101%
5/28/2025Strs Ohio44,300$109K0.0%N/A0.044%
5/16/2025Goldman Sachs Group Inc.351,407$868K0.0%-38.3%0.348%
5/16/2025HGC Investment Management Inc.70,425$174K0.1%N/A0.070%
5/16/2025AQR Capital Management LLC193,323$478K0.0%N/A0.192%
5/16/2025Alyeska Investment Group L.P.615,878$1.52M0.0%-59.4%0.610%
5/15/2025Velan Capital Investment Management LP3,366,945$8.32M8.6%N/A3.337%
5/14/2025MetLife Investment Management LLC18,493$46K0.0%-56.8%0.018%
5/14/2025Stonepine Capital Management LLC167,580$414K0.4%+26.1%0.166%
5/14/2025T. Rowe Price Investment Management Inc.4,649,865$11.49M0.0%-63.9%4.608%
5/13/2025American Century Companies Inc.91,390$226K0.0%+15.9%0.091%
5/12/2025Nuveen LLC202,239$500K0.0%N/A0.200%
5/12/2025Invesco Ltd.85,520$211K0.0%+231.9%0.085%
5/9/2025Deutsche Bank AG61,539$152K0.0%-12.1%0.061%
5/9/2025Charles Schwab Investment Management Inc.544,575$1.35M0.0%-11.4%0.540%
5/8/2025Monaco Asset Management SAM139,600$345K0.1%N/A0.138%
5/8/2025XTX Topco Ltd103,047$255K0.0%+893.8%0.102%
5/6/2025Towerview LLC540,000$1.33M1.0%N/A0.535%
5/6/2025Tabor Asset Management LP48,557$120K0.0%N/A0.048%
5/5/2025Tabor Asset Management LP48,557$120K0.0%N/A0.048%
5/1/2025CWM LLC13,090$32K0.0%+8,237.6%0.013%
4/30/2025Cerity Partners LLC10,419$26K0.0%N/A0.010%
4/30/2025Alps Advisors Inc.74,640$184K0.0%-8.0%0.074%
4/30/2025Nisa Investment Advisors LLC16,586$41K0.0%+19,883.1%0.016%
4/23/2025Western Wealth Management LLC25,000$62K0.0%N/A0.025%
4/8/2025Rhumbline Advisers102,174$252K0.0%-5.6%0.101%
3/24/2025Wellington Management Group LLP180,539$567K0.0%N/A0.179%
2/19/2025Public Employees Retirement System of Ohio97,347$306K0.0%-4.9%0.097%
2/17/2025venBio Partners LLC3,806,410$11.95M7.0%-1.2%3.794%
2/17/2025Two Sigma Advisers LP16,700$52K0.0%-79.7%0.017%
2/17/2025Stonepine Capital Management LLC132,870$417K0.3%N/A0.132%
2/17/2025Stempoint Capital LP1,704,825$5.35M1.3%+29.4%1.699%
2/17/2025ProShare Advisors LLC25,307$79K0.0%+28.5%0.025%
2/17/2025OCONNOR A Distinct Business Unit of UBS ASSET MANAGEMENT AMERICAS LLC211,938$665K0.1%+29.4%0.211%
2/17/2025Millennium Management LLC4,714,402$14.80M0.0%-14.1%4.699%
2/17/2025Jacobs Levy Equity Management Inc.662,981$2.08M0.0%-50.0%0.661%
2/17/2025Deutsche Bank AG70,000$220K0.0%+53.4%0.070%
2/17/2025DAFNA Capital Management LLC87,989$276K0.1%-85.4%0.088%
2/17/2025Bank of America Corp DE197,835$621K0.0%+10.7%0.197%
2/17/2025BNP Paribas Financial Markets75,114$236K0.0%N/A0.075%
2/17/2025Ameriprise Financial Inc.228,098$716K0.0%-3.6%0.227%
2/17/2025Algert Global LLC77,060$242K0.0%+18.9%0.077%
2/17/2025Alyeska Investment Group L.P.1,515,878$4.76M0.0%N/A1.511%
2/17/2025Almitas Capital LLC148,704$467K0.1%+506.5%0.148%
2/17/20254WEALTH Advisors Inc.11,212$35K0.0%N/A0.011%
2/14/2025Jane Street Group LLC10,031$31K0.0%-88.8%0.010%
2/14/2025PDT Partners LLC21,860$69K0.0%-72.9%0.022%
2/14/2025Northern Trust Corp630,051$1.98M0.0%+3.8%0.628%
2/14/2025Boothbay Fund Management LLC29,828$94K0.0%+54.8%0.030%
2/14/2025Susquehanna Fundamental Investments LLC237,465$746K0.0%N/A0.237%
2/14/2025Blue Owl Capital Holdings LP2,783,946$8.74M2.1%-0.4%2.775%
2/14/2025Adage Capital Partners GP L.L.C.450,000$1.41M0.0%-17.5%0.449%
2/14/2025T. Rowe Price Investment Management Inc.12,872,124$40.42M0.0%+23.4%12.830%
2/14/2025Hsbc Holdings PLC11,663$36K0.0%N/A0.012%
2/14/2025Dimensional Fund Advisors LP118,241$371K0.0%N/A0.118%
2/13/2025XTX Topco Ltd10,369$33K0.0%N/A0.010%
2/13/2025Barclays PLC116,644$366K0.0%+21.0%0.116%
2/13/2025Kennedy Capital Management LLC446,850$1.40M0.0%-1.3%0.445%
2/13/2025Renaissance Technologies LLC466,921$1.47M0.0%-12.7%0.465%
2/13/2025ADAR1 Capital Management LLC444,967$1.40M0.3%+731.7%0.444%
2/13/2025Bank of Montreal Can14,532$46K0.0%-90.2%0.014%
2/13/2025Russell Investments Group Ltd.66,699$209K0.0%-12.3%0.066%
2/13/2025Wells Fargo & Company MN52,014$163K0.0%+21.9%0.052%
2/12/2025RPO LLC14,693$46K0.0%N/A0.015%
2/12/2025ExodusPoint Capital Management LP134,680$423K0.0%N/A0.134%
2/12/2025Geode Capital Management LLC1,709,086$5.37M0.0%+3.5%1.703%
2/12/2025Franklin Resources Inc.90,554$284K0.0%-29.6%0.090%
2/12/2025Wellington Management Group LLP180,539$567K0.0%N/A0.180%
2/12/2025JPMorgan Chase & Co.618,127$1.94M0.0%-27.3%0.616%
2/12/2025Ausdal Financial Partners Inc.12,800$40K0.0%-33.7%0.013%
2/11/2025Prudential Financial Inc.14,130$44K0.0%-81.6%0.014%
2/11/2025American Century Companies Inc.78,868$248K0.0%+146.0%0.079%
2/11/2025Intech Investment Management LLC26,587$83K0.0%+71.0%0.026%
2/10/2025Thrivent Financial for Lutherans26,604$84K0.0%-28.8%0.027%
2/7/2025General Atlantic L.P.2,695,327$8.46M0.3%-6.7%2.686%
2/4/2025Los Angeles Capital Management LLC122,003$383K0.0%-14.5%0.122%
1/31/2025New York State Common Retirement Fund15,512$49K0.0%-32.0%0.015%
12/26/2024JPMorgan Chase & Co.850,661$4.19M0.0%-67.3%0.848%
11/27/2024Franklin Resources Inc.128,591$634K0.0%+36.9%0.128%
11/20/2024Virtu Financial LLC10,080$50K0.0%N/A0.010%
11/19/2024Barclays PLC96,408$475K0.0%+208.8%0.096%
11/16/2024Geode Capital Management LLC1,651,614$8.14M0.0%+30.8%1.655%
11/15/2024Barclays PLC96,408$475K0.0%+208.8%0.097%
11/15/2024Public Employees Retirement System of Ohio102,347$505K0.0%+54.6%0.103%
11/15/2024Jane Street Group LLC89,800$443K0.0%-56.0%0.090%
11/15/2024Virtus Investment Advisers Inc.35,700$176K0.1%N/A0.036%
11/15/2024State Street Corp1,273,096$6.28M0.0%+10.0%1.276%
11/15/2024Point72 Asset Management L.P.250,300$1.23M0.0%+566.7%0.251%
11/15/2024Polar Asset Management Partners Inc.71,700$353K0.0%-67.8%0.072%
11/15/2024Ikarian Capital LLC677,074$3.34M0.4%-54.1%0.678%
11/15/2024Jacobs Levy Equity Management Inc.1,326,391$6.54M0.0%-10.4%1.329%
11/15/2024HighTower Advisors LLC10,228$50K0.0%N/A0.010%
11/14/2024PDT Partners LLC80,544$397K0.0%-22.4%0.081%
11/14/2024Verition Fund Management LLC110,115$543K0.0%+55.1%0.110%
11/14/2024Martingale Asset Management L P98,284$485K0.0%N/A0.098%
11/14/2024Acuta Capital Partners LLC364,000$1.80M1.5%N/A0.365%
11/13/2024FMR LLC117,748$580K0.0%-97.5%0.118%
11/12/2024Charles Schwab Investment Management Inc.609,678$3.01M0.0%+81.4%0.611%
11/9/2024Intech Investment Management LLC15,547$77K0.0%N/A0.016%
(Data available from 1/1/2016 forward)

SLRN Institutional Ownership - Frequently Asked Questions

Who are the largest shareholders of SLRN shares?

During the previous two years, 123 institutional investors and hedge funds held shares of Acelyrin. The most heavily invested institutionals were Vanguard Group Inc. ($42.10M), CHI Advisors LLC ($23.02M), Artal Group S.A. ($16.24M), Decheng Capital Management III Cayman LLC ($15.75M), Millennium Management LLC ($14.80M), venBio Partners LLC ($11.95M), and T. Rowe Price Investment Management Inc. ($11.49M).Learn more on Acelyrin's institutional investors.

What percentage of Acelyrin's stock is owned by institutional investors?

87.31% of Acelyrin's stock is owned by institutional investors. Learn more on SLRN's institutional investor holdings.

Which institutional investors have been buying Acelyrin's stock?

Of the 97 institutional investors that purchased Acelyrin's stock in the last 24 months, the following investors and hedge funds have bought the highest volume of shares: Velan Capital Investment Management LP ($3.37M), T. Rowe Price Investment Management Inc. ($2.44M), Alyeska Investment Group L.P. ($1.52M), FMR LLC ($1.51M), Decheng Capital LLC ($1.37M), Kynam Capital Management LP ($1.20M), and Millennium Management LLC ($628.53K).

How much institutional buying is happening at Acelyrin?

Institutional investors have bought a total of 12,952,871 shares in the last 24 months. This purchase volume represents approximately $40.56M in transactions.

Which of Acelyrin's major shareholders have been selling company stock?

Of the 34 institutional investors that sold Acelyrin's stock in the last 24 months, the following investors and hedge funds have sold the highest volume of shares: T. Rowe Price Investment Management Inc. ($8.22M), FMR LLC ($4.60M), JPMorgan Chase & Co. ($1.98M), Alyeska Investment Group L.P. ($900K), Jacobs Levy Equity Management Inc. ($816.88K), Ikarian Capital LLC ($798K), and Millennium Management LLC ($772.77K).

How much institutional selling is happening at Acelyrin?

Institutional investors have sold a total of 20,388,831 shares in the last 24 months. This volume of shares sold represents approximately $71.14M in transactions.


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This page (NASDAQ:SLRN) was last updated on 10/16/2025 by MarketBeat.com Staff
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