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Livermore
Livermore
ZHEN

ACELYRIN, Inc.

SLRNDelisted May 21, 2025
Industry
Pharmaceutical Preparations
SEC CIK
0001962918

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.

13F holders, Q3 2025

Institutional positions in ACELYRIN, Inc. as of Sep 30, 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, and 13F filings after Q1 2025 list far fewer holders. See Q1 2025

Institutional holders
0
−2 vs. Q2 2025
Shares held
0
−285 (−100.0%) vs. Q2 2025
Total value
$0
−$704 (−100.0%) vs. Q2 2025
New holders
0
0 more added
Sold out
2
0 more reduced

Compare with Q2 2025: 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.

Institutional holdersQ3 2025: 0 institutions
Q1 2021: 0 institutionsQ2 2021: 0 institutionsQ3 2021: 0 institutionsQ4 2021: 0 institutionsQ1 2022: 0 institutionsQ2 2022: 0 institutionsQ3 2022: 0 institutionsQ4 2022: 0 institutionsQ1 2023: 0 institutionsQ2 2023: 82 institutionsQ3 2023: 102 institutionsQ4 2023: 110 institutionsQ1 2024: 109 institutionsQ2 2024: 113 institutionsQ3 2024: 122 institutionsQ4 2024: 126 institutionsQ1 2025: 106 institutionsQ2 2025: 2 institutionsQ3 2025: 0 institutionsQ4 2025: 0 institutionsQ1 2026: 0 institutionsQ2 2026: 0 institutions
Value heldQ3 2025: $0
Q1 2021: $0Q2 2021: $0Q3 2021: $0Q4 2021: $0Q1 2022: $0Q2 2022: $0Q3 2022: $0Q4 2022: $0Q1 2023: $0Q2 2023: $1.60BQ3 2023: $847.0MQ4 2023: $632.6MQ1 2024: $613.2MQ2 2024: $383.7MQ3 2024: $430.2MQ4 2024: $276.4MQ1 2025: $182.6MQ2 2025: $704Q3 2025: $0Q4 2025: $0Q1 2026: $0Q2 2026: $0
Institutions holding SLRN and their total value by quarter
QuarterHoldersValue
Q2 20260$0
Q1 20260$0
Q4 20250$0
Q3 20250$0
Q2 20252$704
Q1 2025106$182.6M
Q4 2024126$276.4M
Q3 2024122$430.2M
Q2 2024113$383.7M
Q1 2024109$613.2M
Q4 2023110$632.6M
Q3 2023102$847.0M
Q2 202382$1.60B
Q1 20230$0
Q4 20220$0
Q3 20220$0
Q2 20220$0
Q1 20220$0
Q4 20210$0
Q3 20210$0
Q2 20210$0
Q1 20210$0

Institutions, Q3 2025

Shares, value and share of portfolio for each institution holding ACELYRIN, Inc.; share changes are against Q2 2025.

Institutions holding SLRN in Q3 2025
InstitutionSharesValue% of portfolioChange in sharesAction
Advisor Group Holdings, Inc.0$00.00%−282−100.0%Sold out
IFP Advisors, Inc0$00.00%−3−100.0%Sold out