Keystone Acquisition Corp.
KEYYW- 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; 22 institutions reported holding it in 13F filings for Q2 2026, worth $5.44M in total; no superinvestor holds it.
Key figures
- Insider buysOpen market, last 90 days
- 0
- Insider sellsOpen market, last 90 days
- 0
- 13F holdersQ2 2026, +22 vs. previous quarter
- 22
- 13F valueReported value at the end of Q2 2026
- $5.44M
- Superinvestors holdingAt the end of Q2 2026
- 0
Price chart
Superinvestors holding KEYYW, Q2 2026
No superinvestor reported holding KEYYW at the end of Q2 2026.
Latest insider trades
Open-market purchases and sales by Keystone Acquisition Corp. insiders from Form 4, newest first.
No open-market purchases or sales by Keystone Acquisition Corp. insiders are on file.
Top 10 13F holders, Q2 2026
The largest institutional positions in Keystone Acquisition Corp. at the end of Q2 2026; share changes are against Q1 2026.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Boothbay Fund Management, LLC | 256,329 | $2.53M | 0.05% | +256,329 | New |
| Harraden Circle Investments, LLC | 908,070 | $399.5K | 0.05% | +908,070 | New |
| Glazer Capital, LLC | 668,221 | $294.0K | 0.01% | +668,221 | New |
| Linden Advisors LP | 696,893 | $292.8K | 0.00% | +696,893 | New |
| Meteora Capital, LLC | 556,690 | $244.9K | 0.02% | +556,690 | New |
| Polar Asset Management Partners Inc. | 550,000 | $241.9K | 0.00% | +550,000 | New |
| Sona Asset Management (US) LLC | 450,000 | $198.0K | 0.01% | +450,000 | New |
| Tenor Capital Management Co., L.P. | 375,000 | $165.0K | 0.00% | +375,000 | New |
| Verition Fund Management LLC | 323,729 | $144.4K | 0.00% | +323,729 | New |
| Hudson Bay Capital Management LP | 300,000 | $133.8K | 0.00% | +300,000 | New |