1 institutions reported holding $18,110 of RIVERNORTH/DO 4 75 PFDPFD SER B (OPP-PB) in SEC 13F filings for 2026-03-31. Largest institutional holders: 10Elms LLP ($18,110). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | 10Elms LLP | $18,110 | 1,000 | Hold |
Source: SEC Form 13F filings · as of 2026-03-31