12 institutions reported holding $625.7M of BROOKDALE SR LIVING INC (BKDT) in SEC 13F filings for 2026-03-31. Largest institutional holders: DEERFIELD MANAGEMENT COMPANY, L.P. ($505.4M), CITADEL ADVISORS LLC ($50.8M), BlackRock, Inc. ($50.0M), CSS LLC/IL ($9.5M), CARRONADE CAPITAL MANAGEMENT, LP ($3.4M). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | DEERFIELD MANAGEMENT COMPANY, L.P. | $505.4M | 306.9M | Hold |
| 2 | CITADEL ADVISORS LLC | $50.8M | 30.8M | New |
| 3 | BlackRock, Inc. | $50.0M | 30.5M | Hold |
| 4 | CSS LLC/IL | $9.5M | 5.6M | Hold |
| 5 | CARRONADE CAPITAL MANAGEMENT, LP | $3.4M | 2.0M | Hold |
| 6 | FMR LLC | $3.3M | 2.0M | Hold |
| 7 | RBF Capital, LLC | $1.7M | 1.0M | Hold |
| 8 | Flat Footed LLC | $536,132 | 315,000 | Trimmed |
| 9 | IMC-Chicago, LLC | $369,360 | 27,000 | New |
| 10 | SIMPLEX TRADING, LLC | $302,328 | 22,100 | Added |
| 11 | GROUP ONE TRADING LLC | $229,824 | 16,800 | Added |
| 12 | JPMORGAN CHASE & CO | $23,898 | 20,000 | New |
Source: SEC Form 13F filings · as of 2026-03-31