ACELYRIN, Inc.
SLRNDelisted- Industry
- Pharmaceutical Preparations
- SEC CIK
- 0001962918
ACELYRIN, Inc. was delisted in 2025; its insiders filed their last Form 4 on May 23, 2025; 106 institutions reported holding it in 13F filings for Q1 2025, worth $182.7M in total; no superinvestor held it.
13F holders, Q1 2025
Institutional positions in ACELYRIN, Inc. as of Mar 31, 2025. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
SLRN is no longer listed, so this page shows Q1 2025. 13F filings for later quarters list far fewer holders.
- Institutional holders
- 106
- −19 vs. Q4 2024
- Shares held
- 73.9M
- −13.8M (−15.8%) vs. Q4 2024
- Total value
- $182.7M
- −$93.1M (−33.8%) vs. Q4 2024
- New holders
- 23
- 23 more added
- Sold out
- 42
- 40 more reduced
1 institution that held it in Q4 2024 haven't filed for Q1 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 2024: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting SLRN on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 0 | $0 |
| Q1 2026 | 0 | $0 |
| Q4 2025 | 0 | $0 |
| Q3 2025 | 0 | $0 |
| Q2 2025 | 2 | $704 |
| Q1 2025 | 106 | $182.7M |
| Q4 2024 | 126 | $276.4M |
| Q3 2024 | 122 | $434.4M |
| Q2 2024 | 113 | $395.2M |
| Q1 2024 | 109 | $639.7M |
| Q4 2023 | 110 | $663.0M |
| Q3 2023 | 102 | $847.0M |
| Q2 2023 | 82 | $1.60B |
| Q1 2023 | 0 | $0 |
| Q4 2022 | 0 | $0 |
| Q3 2022 | 0 | $0 |
| Q2 2022 | 0 | $0 |
| Q1 2022 | 0 | $0 |
| Q4 2021 | 0 | $0 |
| Q3 2021 | 0 | $0 |
| Q2 2021 | 0 | $0 |
| Q1 2021 | 0 | $0 |
Institutions, Q1 2025
Shares, value and share of portfolio for each institution holding ACELYRIN, Inc.; share changes are against Q4 2024.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Tang Capital Management LLC | 9,818,115 | $24.3M | 1.34% | +9,818,115 | New |
| AyurMaya Capital Management Company, LP | 9,334,735 | $23.1M | 26.08% | 00.0% | Unchanged |
| BlackRock, Inc. | 5,805,096 | $14.3M | 0.00% | −215,772−3.6% | Reduced |
| T. Rowe Price Investment Management, Inc. | 4,649,865 | $11.5M | 0.01% | −8,222,259−63.9% | Reduced |
| Madison Avenue Partners, LP | 4,142,640 | $10.2M | 0.87% | +4,142,640 | New |
| Vanguard Group Inc | 4,079,706 | $10.1M | 0.00% | −3040.0% | Reduced |
| OrbiMed Advisors LLC | 4,001,711 | $9.88M | 0.24% | 00.0% | Unchanged |
| venBio Partners LLC | 3,806,410 | $9.40M | 7.61% | 00.0% | Unchanged |
| Velan Capital Investment Management LP | 3,366,945 | $8.32M | 8.56% | +3,366,945 | New |
| Tybourne Capital Management (HK) Ltd | 2,906,629 | $7.18M | 30.48% | 00.0% | Unchanged |
| General Atlantic LLC | 2,695,327 | $6.66M | 0.22% | 00.0% | Unchanged |
| Samsara BioCapital, LLC | 2,523,022 | $6.23M | 1.11% | 00.0% | Unchanged |
| Palo Alto Investors LP | 1,792,895 | $4.43M | 0.84% | 00.0% | Unchanged |
| Geode Capital Management, LLC | 1,773,818 | $4.38M | 0.00% | +64,732+3.8% | Added |
| Opaleye Management Inc. | 1,615,000 | $3.99M | 0.89% | −620,000−27.7% | Reduced |
| State Street Corp | 1,420,068 | $3.51M | 0.00% | −21,205−1.5% | Reduced |
| Balyasny Asset Management LLC | 1,305,015 | $3.22M | 0.01% | +1,305,015 | New |
| Alyeska Investment Group, L.P. | 615,878 | $1.52M | 0.01% | −900,000−59.4% | Reduced |
| Renaissance Technologies LLC | 599,800 | $1.48M | 0.00% | +132,879+28.5% | Added |
| Northern Trust Corp | 598,151 | $1.48M | 0.00% | −31,900−5.1% | Reduced |
| JPMorgan Chase & Co | 590,846 | $1.46M | 0.00% | −27,281−4.4% | Reduced |
| Cantor Fitzgerald, L. P. | 588,664 | $1.45M | 0.05% | +588,664 | New |
| Charles Schwab Investment Management Inc | 544,575 | $1.35M | 0.00% | −69,899−11.4% | Reduced |
| Towerview LLC | 540,000 | $1.33M | 0.96% | +540,000 | New |
| Goldman Sachs Group Inc | 351,407 | $868.0K | 0.00% | −218,503−38.3% | Reduced |
| Morgan Stanley | 275,815 | $681.3K | 0.00% | −2,047,706−88.1% | Reduced |
| Susquehanna Fundamental Investments, LLC | 273,412 | $675.3K | 0.01% | +35,947+15.1% | Added |
| Nuveen, LLC | 202,239 | $499.5K | 0.00% | +202,239 | New |
| AQR Capital Management LLC | 193,323 | $477.5K | 0.00% | +193,323 | New |
| Wellington Management Group LLP | 179,150 | $442.5K | 0.00% | −1,389−0.8% | Reduced |
| Citadel Advisors LLC | 176,437 | $435.8K | 0.00% | −4,035,479−95.8% | Reduced |
| Bank of New York Mellon Corp | 173,277 | $428.0K | 0.00% | −3,622−2.0% | Reduced |
| Stonepine Capital Management, LLC | 167,580 | $413.9K | 0.40% | +34,710+26.1% | Added |
| Millennium Management LLC | 149,298 | $368.8K | 0.00% | −4,565,104−96.8% | Reduced |
| Bridgeway Capital Management, LLC | 140,900 | $348.0K | 0.01% | +140,900 | New |
| Monaco Asset Management SAM | 139,600 | $344.8K | 0.17% | +139,600 | New |
| Blair William & Co | 138,595 | $342.3K | 0.00% | 00.0% | Unchanged |
| Franklin Resources Inc | 127,023 | $313.7K | 0.00% | +36,469+40.3% | Added |
| Los Angeles Capital Management LLC | 109,612 | $270.7K | 0.00% | −12,391−10.2% | Reduced |
| UBS Group AG | 103,525 | $255.7K | 0.00% | −83,480−44.6% | Reduced |
| XTX Topco Ltd | 103,047 | $254.5K | 0.01% | +92,678+893.8% | Added |
| Rhumbline Advisers | 102,174 | $252.4K | 0.00% | −6,069−5.6% | Reduced |
| American Century Companies Inc | 91,390 | $225.7K | 0.00% | +12,522+15.9% | Added |
| Susquehanna International Group, LLP | 90,669 | $224.0K | 0.00% | +55,845+160.4% | Added |
| Invesco Ltd. | 85,520 | $211.2K | 0.00% | +59,754+231.9% | Added |
| Barclays PLC | 82,871 | $204.7K | 0.00% | −33,773−29.0% | Reduced |
| Alps Advisors Inc | 74,640 | $184.4K | 0.00% | −6,489−8.0% | Reduced |
| Alliancebernstein L.P. | 73,670 | $182.0K | 0.00% | 00.0% | Unchanged |
| HGC Investment Management Inc. | 70,425 | $173.9K | 0.06% | +70,425 | New |
| Deutsche Bank AG | 61,539 | $152.0K | 0.00% | −8,461−12.1% | Reduced |
| Citigroup Inc | 53,629 | $132.5K | 0.00% | −4,282−7.4% | Reduced |
| Marshall Wace, LLP | 53,100 | $131.2K | 0.00% | −518,948−90.7% | Reduced |
| Wells Fargo & Company | 52,608 | $129.9K | 0.00% | +594+1.1% | Added |
| LMR Partners LLP | 50,000 | $123.5K | 0.00% | +50,000 | New |
| Intech Investment Management LLC | 49,830 | $123.1K | 0.00% | +23,243+87.4% | Added |
| Yakira Capital Management, Inc. | 48,557 | $119.9K | 0.05% | +48,557 | New |
| Virtus Investment Advisers, Inc. | 46,372 | $114.5K | 0.03% | +10,672+29.9% | Added |
| Dimensional Fund Advisors LP | 44,755 | $110.5K | 0.00% | −73,486−62.1% | Reduced |
| STRS Ohio | 44,300 | $109.4K | 0.00% | 00.0% | Unchanged |
| Mirae Asset Global ETFs Holdings Ltd. | 43,780 | $108.1K | 0.00% | +1,872+4.5% | Added |
| Voya Investment Management LLC | 41,536 | $102.6K | 0.00% | +19,254+86.4% | Added |
| Bank of America Corp | 36,410 | $89.9K | 0.00% | −161,425−81.6% | Reduced |
| Corebridge Financial, Inc. | 36,269 | $89.6K | 0.00% | −19−0.1% | Reduced |
| Prelude Capital Management, LLC | 36,220 | $89.5K | 0.01% | −51,961−58.9% | Reduced |
| Price T Rowe Associates Inc | 34,515 | $86.0K | 0.00% | +7,777+29.1% | Added |
| Mariner, LLC | 31,389 | $77.5K | 0.00% | +31,389 | New |
| Manufacturers Life Insurance Company, The | 28,717 | $70.9K | 0.00% | +613+2.2% | Added |
| SG Americas Securities, LLC | 27,110 | $67.0K | 0.00% | −3,378−11.1% | Reduced |
| Western Wealth Management, LLC | 25,000 | $61.8K | 0.00% | +25,000 | New |
| CSS LLC | 24,564 | $60.7K | 0.00% | +24,564 | New |
| ProShare Advisors LLC | 20,570 | $50.8K | 0.00% | −4,737−18.7% | Reduced |
| China Universal Asset Management Co., Ltd. | 20,199 | $49.9K | 0.00% | −1,074−5.0% | Reduced |
| MetLife Investment Management | 18,493 | $45.7K | 0.00% | −24,359−56.8% | Reduced |
| Nisa Investment Advisors, LLC | 16,586 | $41.0K | 0.00% | +16,503+19,883.1% | Added |
| CIBC World Markets Corp | 16,427 | $40.6K | 0.00% | +16,427 | New |
| New York State Common Retirement Fund | 15,512 | $38.3K | 0.00% | 00.0% | Unchanged |
| Bank of Montreal | 15,227 | $37.6K | 0.00% | +695+4.8% | Added |
| Two Sigma Advisers, LP | 15,100 | $37.3K | 0.00% | −1,600−9.6% | Reduced |
| Police & Firemen's Retirement System of New Jersey | 14,886 | $36.8K | 0.00% | 00.0% | Unchanged |
| CWM, LLC | 13,090 | $32.0K | 0.00% | +12,933+8,237.6% | Added |
| Ausdal Financial Partners, Inc. | 12,800 | $31.6K | 0.00% | 00.0% | Unchanged |
| SEI Investments Co | 10,782 | $26.6K | 0.00% | 00.0% | Unchanged |
| Cerity Partners LLC | 10,419 | $25.7K | 0.00% | +10,419 | New |
| Quadrature Capital Ltd | 10,246 | $25.3K | 0.00% | +10,246 | New |
| HighTower Advisors, LLC | 10,031 | $24.8K | 0.00% | −155−1.5% | Reduced |
| FNY Investment Advisers, LLC | 10,000 | $24.0K | 0.01% | +10,000 | New |
| Group One Trading, L.P. | 7,662 | $18.9K | 0.00% | +5,117+201.1% | Added |
| Ameritas Investment Partners, Inc. | 7,243 | $17.9K | 0.00% | 00.0% | Unchanged |
| Legal & General Group Plc | 6,625 | $16.3K | 0.00% | 00.0% | Unchanged |
| California State Teachers Retirement System | 5,289 | $13.1K | 0.00% | 00.0% | Unchanged |
| Royal Bank of Canada | 5,263 | $13.0K | 0.00% | −17,265−76.6% | Reduced |
| BNP Paribas Arbitrage, SA | 5,061 | $12.5K | 0.00% | −70,053−93.3% | Reduced |
| FMR LLC | 4,976 | $12.3K | 0.00% | −159,335−97.0% | Reduced |
| Tower Research Capital LLC (TRC) | 3,637 | $8.98K | 0.00% | −3,260−47.3% | Reduced |
| Mirae Asset Global Investments Co., Ltd. | 3,370 | $8.76K | 0.00% | +27+0.8% | Added |
| GF Fund Management Co. Ltd. | 2,569 | $6.34K | 0.00% | +462+21.9% | Added |
| Amalgamated Bank | 2,452 | $6.00K | 0.00% | 00.0% | Unchanged |
| Sterling Capital Management LLC | 1,311 | $3.24K | 0.00% | −1,028−44.0% | Reduced |
| Caitong International Asset Management Co., Ltd | 1,279 | $3.16K | 0.00% | +1,279 | New |
| Daiwa Securities Group Inc. | 398 | $1.00K | 0.00% | 00.0% | Unchanged |