Free Trial
→ Here’s your answer (From Porter & Company) (Ad) Buy SLRN Stock  Free SLRN Stock Alerts

Acelyrin (SLRN) Institutional Ownership

Acelyrin logo
$2.28 +0.05 (+2.15%)
As of 05/20/2025 02:31 PM Eastern
This is a fair market value price provided by Polygon.io. Learn more.
Compare

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

Current
Institutional Ownership
Percentage
87.31%
Number of
Institutional Buyers
(last 12 months)
64
Total
Institutional Inflows
(last 12 months)
$50.07M
Number of
Institutional Sellers
(last 12 months)
38
Total
Institutional Outflows
(last 12 months)
$88.82M
Get SLRN Insider Trade Alerts

Want to know when executives and insiders are buying or selling Acelyrin stock? Sign up for InsiderTrades.com's daily newsletter to get the latest insider transactions delivered to your inbox daily.

Skip Chart & View Institutional Buying and Selling Data

SLRN Institutional Buying and Selling by Quarter

Acelyrin Major Shareholders & Ownership History

Export to Excel
Reporting DateMajor Shareholder NameShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails
5/16/2025 Goldman Sachs Group Inc.351,407$868K0.0%-38.3%0.348%
5/16/2025 HGC Investment Management Inc.70,425$174K0.1%N/A0.070%
5/16/2025 AQR Capital Management LLC193,323$478K0.0%N/A0.192%
5/16/2025 Alyeska Investment Group L.P.615,878$1.52M0.0%-59.4%0.610%
5/15/2025 Velan Capital Investment Management LP3,366,945$8.32M8.6%N/A3.337%
5/14/2025 MetLife Investment Management LLC18,493$46K0.0%-56.8%0.018%
5/14/2025 Stonepine Capital Management LLC167,580$414K0.4%+26.1%0.166%
5/14/2025 T. Rowe Price Investment Management Inc.4,649,865$11.49M0.0%-63.9%4.608%
5/13/2025 American Century Companies Inc.91,390$226K0.0%+15.9%0.091%
5/12/2025 Nuveen LLC202,239$500K0.0%N/A0.200%
5/12/2025 Invesco Ltd.85,520$211K0.0%+231.9%0.085%
5/9/2025 Deutsche Bank AG61,539$152K0.0%-12.1%0.061%
5/9/2025 Charles Schwab Investment Management Inc.544,575$1.35M0.0%-11.4%0.540%
5/8/2025 Monaco Asset Management SAM139,600$345K0.1%N/A0.138%
5/8/2025 XTX Topco Ltd103,047$255K0.0%+893.8%0.102%
5/6/2025 Towerview LLC540,000$1.33M1.0%N/A0.535%
5/6/2025 Tabor Asset Management LP48,557$120K0.0%N/A0.048%
5/5/2025 Tabor Asset Management LP48,557$120K0.0%N/A0.048%
5/1/2025 CWM LLC13,090$32K0.0%+8,237.6%0.013%
4/30/2025 Cerity Partners LLC10,419$26K0.0%N/A0.010%
4/30/2025 Alps Advisors Inc.74,640$184K0.0%-8.0%0.074%
4/30/2025 Nisa Investment Advisors LLC16,586$41K0.0%+19,883.1%0.016%
4/23/2025 Western Wealth Management LLC25,000$62K0.0%N/A0.025%
4/8/2025 Rhumbline Advisers102,174$252K0.0%-5.6%0.101%
3/24/2025 Wellington Management Group LLP180,539$567K0.0%N/A0.179%
2/19/2025 Public Employees Retirement System of Ohio97,347$306K0.0%-4.9%0.097%
2/17/2025 venBio Partners LLC3,806,410$11.95M7.0%-1.2%3.794%
2/17/2025 Two Sigma Advisers LP16,700$52K0.0%-79.7%0.017%
2/17/2025 Stonepine Capital Management LLC132,870$417K0.3%N/A0.132%
2/17/2025 Stempoint Capital LP1,704,825$5.35M1.3%+29.4%1.699%
2/17/2025 ProShare Advisors LLC25,307$79K0.0%+28.5%0.025%
2/17/2025 OCONNOR A Distinct Business Unit of UBS ASSET MANAGEMENT AMERICAS LLC211,938$665K0.1%+29.4%0.211%
2/17/2025 Millennium Management LLC4,714,402$14.80M0.0%-14.1%4.699%
2/17/2025 Jacobs Levy Equity Management Inc.662,981$2.08M0.0%-50.0%0.661%
2/17/2025 Deutsche Bank AG70,000$220K0.0%+53.4%0.070%
2/17/2025 DAFNA Capital Management LLC87,989$276K0.1%-85.4%0.088%
2/17/2025 Bank of America Corp DE197,835$621K0.0%+10.7%0.197%
2/17/2025 BNP Paribas Financial Markets75,114$236K0.0%N/A0.075%
2/17/2025 Ameriprise Financial Inc.228,098$716K0.0%-3.6%0.227%
2/17/2025 Algert Global LLC77,060$242K0.0%+18.9%0.077%
A grave, grave error. (Ad)

I thought what happened 25 years ago was a once- in-a-lifetime event… but how wrong I was. Because here we are, a quarter of a century later, almost to the exact day, and it’s happening again.

Here’s the full story for you.
2/17/2025 Alyeska Investment Group L.P.1,515,878$4.76M0.0%N/A1.511%
2/17/2025 Almitas Capital LLC148,704$467K0.1%+506.5%0.148%
2/17/2025 4WEALTH Advisors Inc.11,212$35K0.0%N/A0.011%
2/14/2025 Jane Street Group LLC10,031$31K0.0%-88.8%0.010%
2/14/2025 PDT Partners LLC21,860$69K0.0%-72.9%0.022%
2/14/2025 Northern Trust Corp630,051$1.98M0.0%+3.8%0.628%
2/14/2025 Boothbay Fund Management LLC29,828$94K0.0%+54.8%0.030%
2/14/2025 Susquehanna Fundamental Investments LLC237,465$746K0.0%N/A0.237%
2/14/2025 Blue Owl Capital Holdings LP2,783,946$8.74M2.1%-0.4%2.775%
2/14/2025 Adage Capital Partners GP L.L.C.450,000$1.41M0.0%-17.5%0.449%
2/14/2025 T. Rowe Price Investment Management Inc.12,872,124$40.42M0.0%+23.4%12.830%
2/14/2025 Hsbc Holdings PLC11,663$36K0.0%N/A0.012%
2/14/2025 Dimensional Fund Advisors LP118,241$371K0.0%N/A0.118%
2/13/2025 XTX Topco Ltd10,369$33K0.0%N/A0.010%
2/13/2025 Barclays PLC116,644$366K0.0%+21.0%0.116%
2/13/2025 Kennedy Capital Management LLC446,850$1.40M0.0%-1.3%0.445%
2/13/2025 Renaissance Technologies LLC466,921$1.47M0.0%-12.7%0.465%
2/13/2025 ADAR1 Capital Management LLC444,967$1.40M0.3%+731.7%0.444%
2/13/2025 Bank of Montreal Can14,532$46K0.0%-90.2%0.014%
2/13/2025 Russell Investments Group Ltd.66,699$209K0.0%-12.3%0.066%
2/13/2025 Wells Fargo & Company MN52,014$163K0.0%+21.9%0.052%
2/12/2025 RPO LLC14,693$46K0.0%N/A0.015%
2/12/2025 ExodusPoint Capital Management LP134,680$423K0.0%N/A0.134%
2/12/2025 Geode Capital Management LLC1,709,086$5.37M0.0%+3.5%1.703%
2/12/2025 Franklin Resources Inc.90,554$284K0.0%-29.6%0.090%
2/12/2025 Wellington Management Group LLP180,539$567K0.0%N/A0.180%
2/12/2025 JPMorgan Chase & Co.618,127$1.94M0.0%-27.3%0.616%
2/12/2025 Ausdal Financial Partners Inc.12,800$40K0.0%-33.7%0.013%
2/11/2025 Prudential Financial Inc.14,130$44K0.0%-81.6%0.014%
2/11/2025 American Century Companies Inc.78,868$248K0.0%+146.0%0.079%
2/11/2025 Intech Investment Management LLC26,587$83K0.0%+71.0%0.026%
2/10/2025 Thrivent Financial for Lutherans26,604$84K0.0%-28.8%0.027%
2/7/2025 General Atlantic L.P.2,695,327$8.46M0.3%-6.7%2.686%
2/4/2025 Los Angeles Capital Management LLC122,003$383K0.0%-14.5%0.122%
1/31/2025 New York State Common Retirement Fund15,512$49K0.0%-32.0%0.015%
12/26/2024 JPMorgan Chase & Co.850,661$4.19M0.0%-67.3%0.848%
11/27/2024 Franklin Resources Inc.128,591$634K0.0%+36.9%0.128%
11/20/2024 Virtu Financial LLC10,080$50K0.0%N/A0.010%
11/19/2024 Barclays PLC96,408$475K0.0%+208.8%0.096%
11/16/2024 Geode Capital Management LLC1,651,614$8.14M0.0%+30.8%1.655%
11/15/2024 Barclays PLC96,408$475K0.0%+208.8%0.097%
11/15/2024 Public Employees Retirement System of Ohio102,347$505K0.0%+54.6%0.103%
11/15/2024 Jane Street Group LLC89,800$443K0.0%-56.0%0.090%
11/15/2024 Virtus Investment Advisers Inc.35,700$176K0.1%N/A0.036%
11/15/2024 State Street Corp1,273,096$6.28M0.0%+10.0%1.276%
11/15/2024 Point72 Asset Management L.P.250,300$1.23M0.0%+566.7%0.251%
11/15/2024 Polar Asset Management Partners Inc.71,700$353K0.0%-67.8%0.072%
11/15/2024 Ikarian Capital LLC677,074$3.34M0.4%-54.1%0.678%
11/15/2024 Jacobs Levy Equity Management Inc.1,326,391$6.54M0.0%-10.4%1.329%
11/15/2024 HighTower Advisors LLC10,228$50K0.0%N/A0.010%
Here’s your answer (Ad)

Porter Stansberry is stepping into the spotlight — and putting real skin in the game. For the first time ever, he’s opening the doors to a live, real-money trading account, managed transparently with the same strategies he’s used to build long-term wealth. Every 90 days, he and his lead analyst release a new tranche of trades designed for serious investors who don’t want to babysit the market. The goal: income, downside protection, and asymmetric upside.

Lance James breaks down the full FAQ on what this is (and isn’t) — including why they believe now i
11/14/2024 PDT Partners LLC80,544$397K0.0%-22.4%0.081%
11/14/2024 Verition Fund Management LLC110,115$543K0.0%+55.1%0.110%
11/14/2024 Martingale Asset Management L P98,284$485K0.0%N/A0.098%
11/14/2024 Acuta Capital Partners LLC364,000$1.80M1.5%N/A0.365%
11/13/2024 FMR LLC117,748$580K0.0%-97.5%0.118%
11/12/2024 Charles Schwab Investment Management Inc.609,678$3.01M0.0%+81.4%0.611%
11/9/2024 Intech Investment Management LLC15,547$77K0.0%N/A0.016%
11/4/2024 Los Angeles Capital Management LLC142,693$703K0.0%-9.2%0.143%
10/28/2024 US Bancorp DE16,854$83K0.0%+77.1%0.017%
10/25/2024 China Universal Asset Management Co. Ltd.19,196$95K0.0%+65.0%0.019%
(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, 132 institutional investors and hedge funds held shares of Acelyrin. The most heavily invested institutionals were AyurMaya Capital Management Company LP ($195.10M), Samsara BioCapital LLC ($47.15M), Vanguard Group Inc. ($42.10M), Driehaus Capital Management LLC ($36.76M), Marshall Wace LLP ($24.28M), CHI Advisors LLC ($23.02M), and Artal Group S.A. ($16.24M).Learn more on SLRN's institutional investors.

What percentage of Acelyrin stock is owned by institutional investors?

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

Which institutional investors have been buying Acelyrin stock?

Of the 113 institutional investors that purchased Acelyrin stock in the last 24 months, the following investors and hedge funds have bought the highest volume of shares: AyurMaya Capital Management Company LP ($9.33M), JPMorgan Chase & Co. ($3.70M), Velan Capital Investment Management LP ($3.37M), CHI Advisors LLC ($2.66M), T. Rowe Price Investment Management Inc. ($2.44M), Samsara BioCapital LLC ($2.26M), and Artal Group S.A. ($1.82M).

How much institutional buying is happening at Acelyrin?

Institutional investors have bought a total of 51,244,531 shares in the last 24 months. This purchase volume represents approximately $709.54M in transactions.

Which Acelyrin major shareholders have been selling company stock?

Of the 50 institutional investors that sold Acelyrin 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), Opaleye Management Inc. ($2.57M), JPMorgan Chase & Co. ($1.98M), Ikarian Capital LLC ($1.56M), Fred Alger Management LLC ($956.84K), and Alyeska Investment Group L.P. ($900K).

How much institutional selling is happening at Acelyrin?

Institutional investors have sold a total of 27,002,486 shares in the last 24 months. This volume of shares sold represents approximately $122.45M in transactions.


Related Companies

This page (NASDAQ:SLRN) was last updated on 5/22/2025 by MarketBeat.com Staff
From Our Partners
Warning: Prepare to Be Shocked by These Payouts
There's a strategy out there paying up to 70% on tech stocks like Amazon, Tesla, and Microsoft—stocks that don...
Investors Alley | Sponsored
The Prophet's Newest Prediction
A storm is brewing in the markets: new tariffs, recession warnings, and panic in the headlines. That’s when pu...
Stansberry Research | Sponsored
The Trump Dump is starting; Get out of stocks now?
The first 365 days of the Trump presidency… Will be the best time to get rich in American history.
Paradigm Press | Sponsored
The Secret Map of America, Declassified…
Locked inside a Maryland man’s private safe is a map. But not just any map, mind you… This map shows a “...
Banyan Hill Publishing | Sponsored
Trump’s Bitcoin Reserve is No Accident…
How everyday investors are building crypto wealth (step-by-step guide) Don't wait. The window for maximum g...
Crypto 101 Media | Sponsored
Trump’s treachery
I think Trump’s Treasury Secretary is destroying the stock market on purpose. And no one on Wall Street see...
Porter & Company | Sponsored
🚨 Nvidia Just Inked a $7B AI Deal—This Could Change Everything
On Wednesday, Nvidia stock surged—again. Why? Because Saudi Arabia just announced a multi-billion-dollar AI...
Timothy Sykes | Sponsored
Silver Is the New Oil—And the World’s Running Dry
Elon's Next Market Move Could Send Silver Soaring Every industry Elon Musk touches explodes—from Tesla to S...
Priority Gold | Sponsored