11 institutions reported holding $84.5M of REALTY INCOME CORP (O-PF) in SEC 13F filings for 2026-03-31. Largest institutional holders: IMC-Chicago, LLC ($47.4M), GROUP ONE TRADING LLC ($19.1M), Maven Securities LTD ($7.5M), SIMPLEX TRADING, LLC ($6.7M), Burns Matteson Capital Management, LLC ($3.4M). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | IMC-Chicago, LLC | $47.4M | 774,500 | Added |
| 2 | GROUP ONE TRADING LLC | $19.1M | 312,900 | Trimmed |
| 3 | Maven Securities LTD | $7.5M | 122,100 | Added |
| 4 | SIMPLEX TRADING, LLC | $6.7M | 110,000 | Trimmed |
| 5 | Burns Matteson Capital Management, LLC | $3.4M | 8,000 | New |
| 6 | SG Americas Securities, LLC | $201,000 | 351,400 | Trimmed |
| 7 | 10Elms LLP | $82,236 | 100,000 | Trimmed |
| 8 | Luminist Capital LLC | $9,859 | 10,000 | New |
| 9 | McIlrath & Eck, LLC | $3,957 | 4,000 | New |
| 10 | CenterStar Asset Management, LLC | $0 | 0 | Exited |
| 11 | JPMORGAN CHASE & CO | $0 | 0 | Exited |
Source: SEC Form 13F filings · as of 2026-03-31