SLRN — ACELYRIN INC
SLRN (ACELYRIN INC) is tracked on HoldingsHub across five years of quarterly 13F filings. 36 funds have reported positions historically, with the sum of their latest reported stakes valued at $64.40M. No fund in our coverage reported a position in the latest filing period, which typically means the stock has fallen out of the tracked funds' portfolios rather than that it cannot be bought.
All figures on this page are computed from SEC Form 13F quarterly filings. 13F filers disclose long positions of $100,000 or more within 45 days of quarter end; short positions, options overlays and intra-quarter trades are not included, so treat the numbers as a quarterly snapshot of institutional ownership rather than real-time positioning.
| Fund | Quarter | Shares | Value | Portfolio Weight | Change |
|---|---|---|---|---|---|
| BlackRock Inc history | Q1 2025 | 5.81M | $14.34M | 0.00% | Reduce |
| Janus Henderson Group history | Q4 2023 | 1.60M | $11.95M | 0.01% | Reduce |
| Vanguard Group history | Q1 2025 | 4.08M | $10.08M | 0.00% | Hold |
| MFS Investment Management history | Q3 2023 | 642.16K | $6.53M | 0.00% | Hold |
| Geode Capital Management history | Q1 2025 | 1.77M | $4.38M | 0.00% | Add |
| Balyasny Asset Management history | Q1 2025 | 1.31M | $3.22M | 0.01% | New |
| Renaissance Technologies history | Q1 2025 | 599.80K | $1.48M | 0.00% | Add |
| Northern Trust Corp history | Q1 2025 | 598.15K | $1.48M | 0.00% | Reduce |
| JPMorgan Chase & Co history | Q1 2025 | 590.85K | $1.46M | 0.00% | Reduce |
| Charles Schwab Investment Management history | Q1 2025 | 544.58K | $1.35M | 0.00% | Reduce |
| Point72 Asset Management history | Q3 2024 | 250.30K | $1.23M | 0.00% | Add |
| Davidson Kempner Capital Management history | Q2 2023 | 49.68K | $1.04M | 0.03% | New |
| Goldman Sachs Group history | Q1 2025 | 351.41K | $867.98K | 0.00% | Reduce |
| Morgan Stanley history | Q1 2025 | 275.81K | $681.26K | 0.00% | Reduce |
| Two Sigma Investments history | Q2 2024 | 123.47K | $544.50K | 0.00% | New |
| AQR Capital Management history | Q1 2025 | 193.32K | $477.51K | 0.00% | New |
| Wellington Management Group history | Q1 2025 | 179.15K | $442.50K | 0.00% | Reduce |
| Citadel Advisors history | Q1 2025 | 178.04K | $439.75K | 0.00% | Reduce |
| BNY Mellon history | Q1 2025 | 173.28K | $428.00K | 0.00% | Reduce |
| Millennium Management history | Q1 2025 | 149.30K | $368.77K | 0.00% | Reduce |
New Positions (latest)
No fund opened a new position this quarter.
Fully Exited (vs previous quarter)
No tracked fund fully exited this quarter.
Fund Position History — shares by quarter (top 20 funds)
| Fund | Q2 2023 | Q3 2023 | Q4 2023 | Q1 2024 | Q2 2024 | Q3 2024 | Q4 2024 | Q1 2025 |
|---|---|---|---|---|---|---|---|---|
| BlackRock Inc | — | — | — | — | — | 5.98M | 6.02M | 5.81M |
| Vanguard Group | 3.07M | 3.19M | 6.16M | 6.24M | 4.74M | 4.07M | 4.08M | 4.08M |
| Geode Capital Management | 347.77K | 708.78K | 774.13K | 1.23M | 1.26M | 1.65M | 1.71M | 1.77M |
| Balyasny Asset Management | 233.40K | — | — | 53.32K | 36.38K | 43.87K | — | 1.31M |
| Renaissance Technologies | — | — | — | 125.02K | 397.62K | 534.82K | 466.92K | 599.80K |
| Northern Trust Corp | 58.12K | 279.98K | 290.45K | 519.08K | 503.45K | 606.92K | 630.05K | 598.15K |
| JPMorgan Chase & Co | 3.70M | 3.16M | 3.19M | 2.59M | 2.60M | 850.66K | 618.13K | 590.85K |
| Charles Schwab Investment Management | 159.25K | 243.82K | 247.76K | 340.87K | 336.07K | 609.68K | 614.47K | 544.58K |
| Goldman Sachs Group | 310.00K | 1.78M | 1.12M | 755.90K | 799.63K | 521.92K | 569.91K | 351.41K |
| Morgan Stanley | 18.05K | 249.57K | 881.72K | 665.66K | 1.25M | 1.79M | 2.32M | 275.81K |
| AQR Capital Management | — | — | — | — | — | — | — | 193.32K |
| Wellington Management Group | 1.05M | — | — | — | — | — | 180.54K | 179.15K |
| Citadel Advisors | 6.05M | 6.04M | 6.60M | 7.11M | 7.43M | 6.56M | 4.22M | 178.04K |
| BNY Mellon | 13.22K | 92.70K | 95.71K | 182.34K | 223.40K | 176.22K | 176.90K | 173.28K |
| Millennium Management | 732.02K | 34.20K | — | 4.01M | 4.64M | 5.49M | 4.71M | 149.30K |
| Franklin Resources | 879.27K | 805.67K | 805.67K | 2.04M | 93.95K | 128.59K | 90.55K | 127.02K |
| UBS Group AG | 2.08K | 4.52K | 1.83K | 276.64K | 29.98K | 38.81K | 187.00K | 103.53K |
| Invesco Ltd | — | 17.95K | 20.35K | 26.07K | 24.12K | 22.99K | 25.77K | 85.52K |
| Deutsche Bank AG | — | 15.34K | 14.52K | 33.28K | 33.07K | 45.64K | 70.00K | 61.54K |
| Citigroup Inc | — | 73.27K | 6.50K | 13.26K | 31.88K | 54.93K | 57.91K | 53.63K |