Who Owns SIM ACQUISITION CORP. I (SIMA)? -- Institutional Holders (2026-03-31)
46 institutions reported holding $228.3M of SIM ACQUISITION CORP. I (SIMA) in SEC 13F filings for 2026-03-31. Largest institutional holders: Magnetar Financial LLC ($20.8M), Karpus Management, Inc. ($18.5M), AQR Arbitrage LLC ($15.6M), PICTON MAHONEY ASSET MANAGEMENT ($13.9M), First Trust Capital Management L.P. ($13.9M). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|
| 1 | Magnetar Financial LLC | $20.8M | 1.9M | Hold |
| 2 | Karpus Management, Inc. | $18.5M | 1.7M | Trimmed |
| 3 | AQR Arbitrage LLC | $15.6M | 1.5M | Trimmed |
| 4 | PICTON MAHONEY ASSET MANAGEMENT | $13.9M | 1.3M | Trimmed |
| 5 | First Trust Capital Management L.P. | $13.9M | 1.3M | Trimmed |
| 6 | D. E. Shaw & Co., Inc. | $10.6M | 987,497 | Hold |
| 7 | MMCAP International Inc. SPC | $10.5M | 980,000 | Hold |
| 8 | LMR Partners LLP | $10.5M | 980,000 | Hold |
| 9 | BERKLEY W R CORP | $9.8M | 912,286 | Added |
| 10 | TORONTO DOMINION BANK | $8.4M | 780,637 | Added |
| 11 | Westchester Capital Management, LLC | $8.3M | 770,312 | Trimmed |
| 12 | Alberta Investment Management Corp | $8.0M | 750,000 | Hold |
| 13 | GOLDMAN SACHS GROUP INC | $6.7M | 623,342 | Hold |
| 14 | Wealthspring Capital LLC | $6.6M | 617,864 | Trimmed |
| 15 | Hudson Bay Capital Management LP | $6.4M | 596,090 | Trimmed |
| 16 | WOLVERINE ASSET MANAGEMENT LLC | $5.9M | 551,793 | Trimmed |
| 17 | Radcliffe Capital Management, L.P. | $5.8M | 539,443 | Added |
| 18 | DLD Asset Management, LP | $5.4M | 501,421 | New |
| 19 | WHITEBOX ADVISORS LLC | $5.4M | 500,000 | Hold |
| 20 | TWO SIGMA INVESTMENTS, LP | $5.4M | 500,000 | Hold |
| 21 | RIVERNORTH CAPITAL MANAGEMENT, LLC | $3.8M | 357,590 | Trimmed |
| 22 | Periscope Capital Inc. | $3.2M | 300,000 | Trimmed |
| 23 | Context Capital Management, LLC | $2.9M | 270,000 | Hold |
| 24 | HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND | $2.7M | 250,000 | Hold |
| 25 | GLAZER CAPITAL, LLC | $2.4M | 225,149 | Added |
Source: SEC Form 13F filings · as of 2026-03-31