Keystone Acquisition Corp.
KEYY- Exchange
- Nasdaq
- Industry
- Blank Checks
- SEC CIK
- 0002102771
No open-market purchases or sales by Keystone Acquisition Corp. insiders were filed in the last 90 days; 26 institutions reported holding it in 13F filings for Q2 2026, worth $143.3M in total; no superinvestor holds it.
13F holders, Q2 2026
Institutional positions in Keystone Acquisition Corp. as of Jun 30, 2026. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 26
- +26 vs. Q1 2026
- Shares held
- 14.5M
- +14.5M vs. Q1 2026
- Total value
- $143.3M
- +$143.3M vs. Q1 2026
- New holders
- 26
- 0 more added
- Sold out
- 0
- 0 more reduced
Compare with Q1 2026: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting KEYY on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 26 | $143.3M |
| Q1 2026 | 0 | $0 |
| Q4 2025 | 0 | $0 |
| Q3 2025 | 0 | $0 |
| Q2 2025 | 0 | $0 |
| Q1 2025 | 0 | $0 |
| Q4 2024 | 0 | $0 |
| Q3 2024 | 0 | $0 |
| Q2 2024 | 0 | $0 |
| Q1 2024 | 0 | $0 |
| Q4 2023 | 0 | $0 |
| Q3 2023 | 0 | $0 |
| Q2 2023 | 0 | $0 |
| Q1 2023 | 0 | $0 |
| Q4 2022 | 0 | $0 |
| Q3 2022 | 0 | $0 |
| Q2 2022 | 0 | $0 |
| Q1 2022 | 0 | $0 |
| Q4 2021 | 0 | $0 |
| Q3 2021 | 0 | $0 |
| Q2 2021 | 0 | $0 |
| Q1 2021 | 0 | $0 |
Institutions, Q2 2026
Shares, value and share of portfolio for each institution holding Keystone Acquisition Corp.; share changes are against Q1 2026.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Glazer Capital, LLC | 1,437,045 | $14.2M | 0.35% | +1,437,045 | New |
| Linden Advisors LP | 1,300,000 | $12.8M | 0.07% | +1,300,000 | New |
| Meteora Capital, LLC | 1,116,282 | $11.0M | 0.91% | +1,116,282 | New |
| Polar Asset Management Partners Inc. | 1,100,000 | $10.8M | 0.20% | +1,100,000 | New |
| Toronto Dominion Bank | 1,079,982 | $10.6M | 0.02% | +1,079,982 | New |
| Sona Asset Management (US) LLC | 900,000 | $8.87M | 0.33% | +900,000 | New |
| Tenor Capital Management Co., L.P. | 750,000 | $7.39M | 0.10% | +750,000 | New |
| Vivaldi Asset Management, LLC | 749,998 | $7.39M | 0.43% | +749,998 | New |
| Verition Fund Management LLC | 664,259 | $6.55M | 0.05% | +664,259 | New |
| Hudson Bay Capital Management LP | 600,000 | $5.92M | 0.03% | +600,000 | New |
| Boothbay Fund Management, LLC | 513,535 | $5.06M | 0.09% | +513,535 | New |
| Periscope Capital Inc. | 499,800 | $4.93M | 0.78% | +499,800 | New |
| Two Sigma Investments, LP | 453,124 | $4.47M | 0.00% | +453,124 | New |
| CSS LLC | 451,508 | $4.45M | 0.20% | +451,508 | New |
| Shaolin Capital Management LLC | 448,734 | $4.42M | 0.25% | +448,734 | New |
| Centiva Capital, LP | 425,000 | $4.19M | 0.14% | +425,000 | New |
| Clear Street Group Inc. | 302,829 | $2.99M | 0.01% | +302,829 | New |
| Saba Capital Management, L.P. | 299,995 | $2.96M | 0.09% | +299,995 | New |
| K2 Principal Fund, L.P. | 293,023 | $2.89M | 0.27% | +293,023 | New |
| O'Connor Alternative Investments LLC | 250,000 | $2.46M | 0.18% | +250,000 | New |
| Wolverine Asset Management LLC | 200,900 | $1.98M | 0.03% | +200,900 | New |
| Mint Tower Capital Management B.V. | 200,000 | $1.97M | 0.23% | +200,000 | New |
| StoneX Group Inc. | 193,290 | $1.91M | 0.08% | +193,290 | New |
| Governors Lane LP | 181,383 | $1.79M | 0.18% | +181,383 | New |
| Berkley W R Corp | 99,400 | $980.1K | 0.05% | +99,400 | New |
| Virtu Financial LLC | 24,639 | $243.0K | 0.01% | +24,639 | New |