KEYYU KEYSTONE ACQUISITION CORP: institutional ownership and insider trading
28 funds reported holding $135M of KEYSTONE ACQUISITION CORP in their latest 13F filings; in Q2 2026 funds net bought $135M, with 29 new positions and 0 funds selling out.
Famous investors holding KEYYU
- Izzy Englander (Millennium Management): $5.02M, 0.0% of the portfolio
Largest institutional holders of KEYYU
- Magnetar Financial LLC — $20.1M
- AQR Arbitrage LLC — $17.3M
- LMR Partners LLP — $13.1M
- HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND — $12.6M
- Alberta Investment Management Corp — $8.05M
- HGC Investment Management Inc. — $8.03M
- Fort Baker Capital Management LP — $6.02M
- BNP PARIBAS FINANCIAL MARKETS — $5.29M
- MILLENNIUM MANAGEMENT LLC — $5.02M
- Radcliffe Capital Management, L.P. — $5.02M
5%+ owners
- MAGNETAR FINANCIAL LLC: 7.0% (Schedule 13G, filed Aug 13, 2026)