KEYY · Company research
Keystone Acquisition Corp. Class A Ordinary Shares (KEYY): Ownership & Institutional Holders
Reported institutional positions. Filing dates and sources matter.
RESEARCH CONTEXT
Understand the numbers
Reported institutional positions. Filing dates and sources matter. Use period, currency, units and source fields when interpreting values.
55records availableOther
Ownership & Institutional Holders data
Database-backed records only
| holder name | cik | period end | shares held | market value | ownership percent | shares change | shares change percent | filing date | data source |
|---|---|---|---|---|---|---|---|---|---|
| MOORE CAPITAL MANAGEMENT, LP | 1448574 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 300000 | 3012000 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| CSS LLC/IL | 1103646 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 451508 | 4451869 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| K2 PRINCIPAL FUND, L.P. | 1461790 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 293023 | 2889207 | — | — | — | Aug 7, 2026 | SEC_13F_DATASET |
| HIGHBRIDGE CAPITAL MANAGEMENT LLC | 919185 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 500 | 215 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| Verition Fund Management LLC | 1454027 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 664259 | 6549594 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| Periscope Capital Inc. | 1695320 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 499800 | 4928028 | — | — | — | Aug 11, 2026 | SEC_13F_DATASET |
| Virtu Financial LLC | 1533964 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 24639 | 243 | — | — | — | Aug 13, 2026 | SEC_13F_DATASET |
| Shaolin Capital Management LLC | 1766806 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 448734 | 4424517 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| First Trust Capital Management L.P. | 1604488 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 749998 | 7394980 | — | — | — | Aug 13, 2026 | SEC_13F_DATASET |
| Clear Street Group Inc. | 1881567 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 302829 | 2985894 | — | — | — | Aug 12, 2026 | SEC_13F_DATASET |
| Decagon Asset Management LLP | 1950677 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 375000 | 3765001 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| Saba Capital Management, L.P. | 1510281 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 299995 | 2957951 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND | 1535845 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 1250000 | 12575000 | — | — | — | Aug 13, 2026 | SEC_13F_DATASET |
| WOLVERINE ASSET MANAGEMENT LLC | 1279891 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 95397 | 41965 | — | — | — | Aug 10, 2026 | SEC_13F_DATASET |
| Mint Tower Capital Management B.V. | 1666606 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 200000 | 1972 | — | — | — | Aug 18, 2026 | SEC_13F_DATASET |
| TORONTO DOMINION BANK | 947263 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 17760 | 7814 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| AQR Arbitrage LLC | 1167456 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 1723275 | 17301681 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| PICTON MAHONEY ASSET MANAGEMENT | 1539041 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 400000 | 4016001 | — | — | — | Aug 13, 2026 | SEC_13F_DATASET |
| RIVERNORTH CAPITAL MANAGEMENT, LLC | 1447578 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 200000 | 2030000 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| Harraden Circle Investments, LLC | 1910592 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 908070 | 399460 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| Calamos Advisors LLC | 1316507 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 200000 | 2018000 | — | — | — | Jul 31, 2026 | SEC_13F_DATASET |
| Meteora Capital, LLC | 1905106 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 556690 | 244888 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| GLAZER CAPITAL, LLC | 1076809 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 1437045 | 14169 | — | — | — | Aug 17, 2026 | SEC_13F_DATASET |
| Hudson Bay Capital Management LP | 1393825 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 600000 | 5916000 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| HRT FINANCIAL LP | 1475597 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 22330 | 224 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| LMR Partners LLP | 1578621 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 1300000 | 13052000 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| ARISTEIA CAPITAL, L.L.C. | 1080171 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 144062 | 1446382 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| Alberta Investment Management Corp | 1463559 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 800000 | 8048000 | — | — | — | Aug 6, 2026 | SEC_13F_DATASET |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | 1446194 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 40000 | 401600 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| O'Connor Alternative Investments LLC | 2081629 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 250000 | 2465000 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| Radcliffe Capital Management, L.P. | 1218275 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 499900 | 5018996 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| Fort Baker Capital Management LP | 1688382 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 600000 | 6024000 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| Magnetar Financial LLC | 1352851 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 2000000 | 20080000 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| Ghisallo Capital Management LLC | 1825214 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 150000 | 1513500 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| BOOTHBAY FUND MANAGEMENT, LLC | 1549230 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 513535 | 5063455 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| Governors Lane LP | 1644187 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 181383 | 1788436 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| TWO SIGMA INVESTMENTS, LP | 1179392 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 453124 | 4467803 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| HGC Investment Management Inc. | 1711200 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 800000 | 8032000 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| Linden Advisors LP | 1279396 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 1300000 | 12818000 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| Centiva Capital, LP | 1692507 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 425000 | 4267000 | — | — | — | Aug 13, 2026 | SEC_13F_DATASET |
| W.R. Berkley Corporation | 11544 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 99400 | 980084000 | — | — | — | Aug 14, 2026 | SEC_13F_HR |
| LONGFELLOW INVESTMENT MANAGEMENT CO LLC | 1167487 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 8642 | 86766 | — | — | — | Aug 6, 2026 | SEC_13F_DATASET |
| Schonfeld Strategic Advisors LLC | 1665241 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 200000 | 2007999 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| WHITEBOX ADVISORS LLC | 1257391 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 350000 | 3514000 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| UBS Group AG | 1610520 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 1040 | 10442 | — | — | — | Aug 13, 2026 | SEC_13F_DATASET |
| BNP PARIBAS FINANCIAL MARKETS | 1166588 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 526725 | 5288319 | — | — | — | Aug 13, 2026 | SEC_13F_DATASET |
| DLD Asset Management, LP | 1578299 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 100000 | 1004000 | — | — | — | Aug 13, 2026 | SEC_13F_DATASET |
| TENOR CAPITAL MANAGEMENT Co., L.P. | 1346554 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 750000 | 7395000 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| BERKLEY W R CORP | 11544 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 99400 | 980084 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| SONA ASSET MANAGEMENT (US) LLC | 1856405 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 900000 | 8874000 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| ABC ARBITRAGE SA | 2049221 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 30000 | 301200 | — | — | — | Jul 20, 2026 | SEC_13F_DATASET |
| StoneX Group Inc. | 913760 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 193290 | 1905839 | — | — | — | Aug 12, 2026 | SEC_13F_DATASET |
| Polar Asset Management Partners Inc. | 1326389 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 1100000 | 10846000 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| MILLENNIUM MANAGEMENT LLC | 1273087 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 500000 | 5020000 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| Lineage Point Capital LP | 2093311 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 295719 | 2969019 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
Informational research only, not financial advice. Forecasts are uncertain and can be wrong.