23 institutions reported holding $18.1M of SPARK I ACQUISITION CORP (SPKL) in SEC 13F filings for 2026-06-30. Largest institutional holders: AQR Arbitrage LLC ($5.5M), MIZUHO SECURITIES USA LLC ($5.0M), Yaupon Capital Management LP ($2.0M), FNY Investment Advisers, LLC ($1.5M), MOORE CAPITAL MANAGEMENT, LP ($1.3M). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | AQR Arbitrage LLC | $5.5M | 437,689 | Trimmed |
| 2 | MIZUHO SECURITIES USA LLC | $5.0M | 448,816 | Added |
| 3 | Yaupon Capital Management LP | $2.0M | 156,250 | New |
| 4 | FNY Investment Advisers, LLC | $1.5M | 116,031 | New |
| 5 | MOORE CAPITAL MANAGEMENT, LP | $1.3M | 100,000 | Hold |
| 6 | Periscope Capital Inc. | $564,903 | 45,000 | Trimmed |
| 7 | Polar Asset Management Partners Inc. | $562,148 | 44,757 | New |
| 8 | BERKLEY W R CORP | $389,778 | 31,058 | Trimmed |
| 9 | HRT FINANCIAL LP | $371,000 | 29,589 | New |
| 10 | Linden Advisors LP | $313,750 | 25,000 | Hold |
| 11 | Brevan Howard Capital Management LP | $232,471 | 18,233 | New |
| 12 | Clear Street Group Inc. | $175,700 | 14,000 | Trimmed |
| 13 | JANE STREET GROUP, LLC | $165,898 | 13,219 | New |
| 14 | TORONTO DOMINION BANK | $125,500 | 10,000 | Added |
| 15 | MORGAN STANLEY | $816 | 65 | Trimmed |
| 16 | Caitong International Asset Management Co., Ltd | $113 | 9 | New |
| 17 | GLAZER CAPITAL, LLC | $0 | 0 | Exited |
| 18 | Radcliffe Capital Management, L.P. | $0 | 0 | Exited |
| 19 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | $0 | 0 | Exited |
| 20 | Rangeley Capital, LLC | $0 | 0 | Exited |
| 21 | UBS Group AG | $0 | 0 | Exited |
| 22 | O'Connor Alternative Investments LLC | $0 | 0 | Exited |
| 23 | Logan Stone Capital, LLC | $0 | 0 | Exited |
Source: SEC Form 13F filings · as of 2026-06-30