Who Owns KEYSTONE ACQUISITION CORP (KEYY)? -- Institutional Holders (2026-06-30)
26 institutions reported holding $143.3M of KEYSTONE ACQUISITION CORP (KEYY) in SEC 13F filings for 2026-06-30. Largest institutional holders: GLAZER CAPITAL, LLC ($14.2M), Linden Advisors LP ($12.8M), METEORA CAPITAL, LLC ($11.0M), Polar Asset Management Partners Inc. ($10.8M), TORONTO DOMINION BANK ($10.6M). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|
| 1 | GLAZER CAPITAL, LLC | $14.2M | 1.4M | New |
| 2 | Linden Advisors LP | $12.8M | 1.3M | New |
| 3 | METEORA CAPITAL, LLC | $11.0M | 1.1M | New |
| 4 | Polar Asset Management Partners Inc. | $10.8M | 1.1M | New |
| 5 | TORONTO DOMINION BANK | $10.6M | 1.1M | New |
| 6 | SONA ASSET MANAGEMENT (US) LLC | $8.9M | 900,000 | New |
| 7 | TENOR CAPITAL MANAGEMENT Co., L.P. | $7.4M | 750,000 | New |
| 8 | First Trust Capital Management L.P. | $7.4M | 749,998 | New |
| 9 | Verition Fund Management LLC | $6.5M | 664,259 | New |
| 10 | Hudson Bay Capital Management LP | $5.9M | 600,000 | New |
| 11 | BOOTHBAY FUND MANAGEMENT, LLC | $5.1M | 513,535 | New |
| 12 | Periscope Capital Inc. | $4.9M | 499,800 | New |
| 13 | TWO SIGMA INVESTMENTS, LP | $4.5M | 453,124 | New |
| 14 | CSS LLC/IL | $4.5M | 451,508 | New |
| 15 | Shaolin Capital Management LLC | $4.4M | 448,734 | New |
| 16 | Centiva Capital, LP | $4.2M | 425,000 | New |
| 17 | Clear Street Group Inc. | $3.0M | 302,829 | New |
| 18 | Saba Capital Management, L.P. | $3.0M | 299,995 | New |
| 19 | K2 PRINCIPAL FUND, L.P. | $2.9M | 293,023 | New |
| 20 | O'Connor Alternative Investments LLC | $2.5M | 250,000 | New |
| 21 | WOLVERINE ASSET MANAGEMENT LLC | $2.0M | 200,900 | New |
| 22 | Mint Tower Capital Management B.V. | $2.0M | 200,000 | New |
| 23 | StoneX Group Inc. | $1.9M | 193,290 | New |
| 24 | Governors Lane LP | $1.8M | 181,383 | New |
| 25 | BERKLEY W R CORP | $980,084 | 99,400 | New |
Source: SEC Form 13F filings · as of 2026-06-30