AcelyrinSLRN
13F holders, Q4 2024 (December 31)125holders +3
15new positions
14sold out
4famous investors
$3.14avg. 13F price*
At the end of Q4 2024, 125 institutions reported holding Acelyrin Inc. (SLRN) in their 13F filings, up 3 from Q3 2024. 15 opened new positions and 14 sold out. The largest holders were T. Rowe Price Investment Management, Inc. ($40.4M), AyurMaya Capital Management Company, LP ($29.3M) and BlackRock, Inc. ($18.9M). 4 famous investors held it, including Israel Englander (0.0% of Millennium Management's portfolio), Ken Griffin (0.0% of Citadel Advisors's portfolio) and Jim Simons / Peter Brown (0.0% of Renaissance Technologies's portfolio).
- Company
- Acelyrin Inc.
- CUSIP
- 00445A100
- Latest filing quarter
- Q2 2025
History
Number of 13F holders
Total Exit/New Position Q3 2024 → Q4 2024
| Institutions | Total Value | |
|---|---|---|
| New Positions | 15 | $7.6M |
| Exits | 14 | $6.8M |
All 13F filers, Q3 2024 → Q4 2024: 7,616,593 shares bought and 7,115,404 shares sold, net +501,189 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 125 holders
| T. Rowe Price Investment Management, Inc. | 0.03% | Add +23.4% | 12,872,124 | $40.4M |
| AyurMaya Capital Management Company, LP | 25.94% | No change | 9,334,735 | $29.3M |
| BlackRock, Inc. | 0.00% | Add +0.6% | 6,020,868 | $18.9M |
| Millennium Management | 0.01% | Reduce -14.1% | 4,714,402 | $14.8M |
| Citadel Advisors | 0.01% | Reduce -35.4% | 4,211,916 | $13.2M |
| Vanguard Group Inc. | 0.00% | Add +0.3% | 4,080,010 | $12.8M |
| Orbimed Advisors LLC | 0.26% | No change | 4,001,711 | $12.6M |
| venBio Partners LLC | 7.00% | Reduce -1.2% | 3,806,410 | $12.0M |
| Tybourne Capital Management (hk) Ltd. | 2.29% | No change | 2,906,629 | $9.1M |
| Blue Owl Capital Holdings LP | 2.02% | Reduce -0.4% | 2,783,946 | $8.7M |
| General Atlantic, L.P. | 0.30% | Reduce -6.7% | 2,695,327 | $8.5M |
| Samsara Biocapital, LLC | 1.09% | No change | 2,523,022 | $7.9M |
| Morgan Stanley | 0.00% | Add +30.1% | 2,323,521 | $7.3M |
| Opaleye Management Inc. | 1.28% | Add +18.0% | 2,235,000 | $7.2M |
| Palo Alto Investors LP | 0.87% | No change | 1,792,895 | $5.6M |
| Siren, L.L.C. | 0.24% | No change | 1,729,665 | $5.4M |
| Geode Capital Management, LLC | 0.00% | Add +3.5% | 1,709,086 | $5.4M |
| Stempoint Capital LP | 1.34% | Add +29.4% | 1,704,825 | $5.4M |
| Alyeska Investment Group, L.P. | 0.02% | New | 1,515,878 | $4.8M |
| State Street Corp. | 0.00% | Add +13.2% | 1,441,273 | $4.5M |
| RTW Investments, LP | 0.05% | No change | 978,310 | $3.1M |
| Kynam Capital Management, LP | 0.18% | No change | 847,366 | $2.7M |
| Ikarian Capital, LLC | 0.61% | Reduce -0.1% | 676,608 | $2.1M |
| Jacobs Levy Equity Management, Inc. | 0.01% | Reduce -50.0% | 662,981 | $2.1M |
| Northern Trust Corp. | 0.00% | Add +3.8% | 630,051 | $2.0M |
| JPMorgan Chase & Co. | 0.00% | Reduce -27.3% | 618,127 | $1.9M |
| Charles Schwab Investment Management Inc. | 0.00% | Add +0.8% | 614,474 | $1.9M |
| Marshall Wace, LLP | 0.00% | No change | 572,048 | $1.8M |
| Goldman Sachs Group Inc. | 0.00% | Add +9.2% | 569,910 | $1.8M |
| Renaissance Technologies | 0.00% | Reduce -12.7% | 466,921 | $1.5M |
| Adage Capital Partners Gp, L.L.C. | 0.00% | Reduce -17.5% | 450,000 | $1.4M |
| Kennedy Capital Management LLC | 0.03% | Reduce -1.3% | 446,850 | $1.4M |
| ADAR1 Capital Management, LLC | 0.30% | Add +731.7% | 444,967 | $1.4M |
| TD Asset Management Inc | 0.00% | Add +53.5% | 267,656 | $840K |
| Susquehanna Fundamental Investments, LLC | 0.01% | — | 237,465 | $746K |
| Exome Asset Management LLC | 0.55% | New | 234,435 | $736K |
| Ameriprise Financial Inc. | 0.00% | Reduce -3.6% | 228,098 | $716K |
| OCONNOR, A Distinct Business Unit of UBS ASSET MANAGEMENT AMERICAS (LLC) | 0.02% | Add +29.4% | 211,938 | $665K |
| Nuveen Asset Management, LLC | 0.00% | No change | 202,239 | $635K |
| Bank of America Corp. | 0.00% | Add +10.7% | 197,835 | $621K |
| Hudson Bay Capital Management LP | 0.00% | Reduce -1.7% | 196,620 | $617K |
| UBS Group AG | 0.00% | Add +381.9% | 187,005 | $587K |
| Wellington Management Group LLP | 0.00% | New | 180,539 | $567K |
| Bank of New York Mellon Corp | 0.00% | Add +0.4% | 176,899 | $555K |
| FMR LLC | 0.00% | Add +39.5% | 164,311 | $516K |
| Almitas Capital LLC | 0.10% | Add +506.5% | 148,704 | $467K |
| Blair William & Co. | 0.00% | No change | 138,595 | $435K |
| ExodusPoint Capital Management, LP | 0.00% | New | 134,680 | $423K |
| Stonepine Capital Management, LLC | 0.34% | New | 132,870 | $417K |
| Los Angeles Capital Management LLC | 0.00% | Reduce -14.5% | 122,003 | $383K |
| Dimensional Fund Advisors LP | 0.00% | New | 118,241 | $371K |
| Barclays PLC | 0.00% | Add +21.0% | 116,644 | $366K |
| Rhumbline Advisers | 0.00% | Add +1.8% | 108,243 | $340K |
| Martingale Asset Management L P | 0.01% | Add +4.4% | 102,596 | $322K |
| Acadian Asset Management LLC | 0.00% | Reduce -47.3% | 101,514 | $318K |
| Public Employees Retirement System of Ohio | 0.00% | Reduce -4.9% | 97,347 | $306K |
| Franklin Resources Inc. | 0.00% | Reduce -29.6% | 90,554 | $284K |
| Prelude Capital Management, LLC | 0.02% | Add +199.7% | 88,181 | $277K |
| DAFNA Capital Management LLC | 0.07% | Reduce -85.4% | 87,989 | $276K |
| Alps Advisors Inc. | 0.00% | Add +5.0% | 81,129 | $255K |
| American Century Companies Inc. | 0.00% | Add +146.0% | 78,868 | $248K |
| Algert Global LLC | 0.01% | Add +18.9% | 77,060 | $242K |
| BNP Paribas Financial Markets | 0.00% | New | 75,114 | $236K |
| Alliancebernstein L.P. | 0.00% | No change | 73,670 | $231K |
| Deutsche Bank AG | 0.00% | Add +53.4% | 70,000 | $220K |
| Russell Investments Group, Ltd. | 0.00% | Reduce -12.3% | 66,699 | $209K |
| Citigroup Inc. | 0.00% | Add +5.4% | 57,911 | $182K |
| Wells Fargo & Company | 0.00% | Add +21.9% | 52,014 | $163K |
| Tudor Investment Corporation | 0.00% | Reduce -0.2% | 48,299 | $152K |
| STRS Ohio | 0.00% | No change | 44,300 | $139K |
| MetLife Investment Management, LLC | 0.00% | No change | 42,852 | $135K |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 0.00% | Add +4.5% | 41,908 | $132K |
| Corebridge Financial, Inc. | 0.00% | Reduce -7.0% | 36,288 | $114K |
| Virtus Investment Advisers, LLC | 0.09% | No change | 35,700 | $112K |
| Susquehanna International Group, LLP | 0.00% | Add +23.8% | 34,824 | $109K |
| SG Americas Securities, LLC | 0.00% | Add +13.9% | 30,488 | $96K |
| Boothbay Fund Management, LLC | 0.00% | Add +54.8% | 29,828 | $94K |
| Manufacturers Life Insurance Company, The | 0.00% | Reduce -2.4% | 28,104 | $88K |
| Verition Fund Management LLC | 0.00% | Reduce -75.0% | 27,480 | $86K |
| Thrivent Financial for Lutherans | 0.00% | Reduce -28.8% | 26,604 | $84K |
| T. Rowe Price Associates Inc. | 0.00% | Add +13.9% | 26,738 | $84K |
| Intech Investment Management LLC | 0.00% | Add +71.0% | 26,587 | $83K |
| Invesco Ltd. | 0.00% | Add +12.1% | 25,766 | $81K |
| ProShare Advisors LLC | 0.00% | Add +28.5% | 25,307 | $79K |
| Royal Bank of Canada | 0.00% | Add +165.0% | 22,528 | $71K |
| Voya Investment Management LLC | 0.00% | Reduce -10.9% | 22,282 | $70K |
| PDT Partners, LLC | 0.01% | Reduce -72.9% | 21,860 | $69K |
| China Universal Asset Management Co., Ltd. | 0.01% | Add +10.8% | 21,273 | $67K |
| Virtus Advisers, LLC | 0.03% | Reduce -5.0% | 20,083 | $63K |
| Two Sigma Advisers, LP | 0.00% | Reduce -79.7% | 16,700 | $52K |
| HRT Financial LP | 0.00% | Reduce -83.1% | 16,021 | $50K |
| New York State Common Retirement Fund | 0.00% | Reduce -32.0% | 15,512 | $49K |
| Man Group plc | 0.00% | Add +11.6% | 15,193 | $48K |
| Police & Firemen's Retirement System of New Jersey | 0.00% | — | 14,886 | $47K |
| Rpo LLC | 0.07% | New | 14,693 | $46K |
| Bank of Montreal | 0.00% | Reduce -90.2% | 14,532 | $46K |
| Prudential Financial Inc. | 0.00% | Reduce -81.6% | 14,130 | $44K |
| Ausdal Financial Partners, Inc. | 0.00% | Reduce -33.7% | 12,800 | $40K |
| HSBC Holdings PLC | 0.00% | New | 11,663 | $36K |
| 4WEALTH Advisors, Inc. | 0.04% | — | 11,212 | $35K |
| Sei Investments Co. | 0.00% | No change | 10,782 | $34K |
| XTX Topco Ltd | 0.00% | New | 10,369 | $33K |
| HighTower Advisors, LLC | 0.00% | Reduce -0.4% | 10,186 | $32K |
| Jane Street Group, LLC | 0.00% | Reduce -88.8% | 10,031 | $31K |
| Ameritas Investment Partners, Inc. | 0.00% | No change | 7,243 | $23K |
| Tower Research Capital LLC (TRC) | 0.00% | Add +75.7% | 6,897 | $22K |
| Legal & General Group Plc | 0.00% | No change | 6,625 | $21K |
| California State Teachers Retirement System | 0.00% | No change | 5,289 | $17K |
| Simplex Trading, LLC | 0.00% | Reduce -74.5% | 4,899 | $15K |
| Mirae Asset Global Investments Co., Ltd. | 0.00% | Reduce -7.4% | 3,343 | $11K |
| Federated Hermes, Inc. | 0.00% | Add +95200.0% | 2,859 | $9K |
| Amalgamated Bank | 0.00% | No change | 2,452 | $8K |
| Group One Trading LLC | 0.00% | Reduce -83.7% | 2,545 | $8K |
| Sterling Capital Management LLC | 0.00% | Add +908.2% | 2,339 | $7K |
| GF Fund Management Co. LTD. | 0.00% | — | 2,107 | $7K |
| Bfsg, LLC | 0.00% | No change | 1,900 | $6K |
| Comerica Bank | 0.00% | New | 1,428 | $4K |
| Daiwa Securities Group Inc. | 0.00% | No change | 398 | $1K |
| Signaturefd, LLC | 0.00% | New | 175 | $550 |
| Rothschild Investment LLC | 0.00% | Add +42.9% | 100 | $314 |
| Nisa Investment Advisors, LLC | 0.00% | Reduce -99.4% | 83 | $261 |
| Brooklyn Investment Group | 0.00% | New | 62 | $195 |
| PNC Financial Services Group, Inc. | 0.00% | No change | 53 | $166 |
| Allworth Financial LP | 0.00% | New | 65 | $132 |
| Cwm, LLC | 0.00% | Reduce -6.0% | 157 | $0 |
"% of holder's portfolio" is SLRN's weight in each manager's 13F, not the share of Acelyrin Inc. the manager owns.