BLACKROCK ETF TRUST PUT is a security (CUSIP 09290C951) tracked across SEC portfolio filings. 2 institutional managers reported $30K on Form 13F as of 2026-03-31.
| Manager | Location | Value | Shares |
|---|---|---|---|
| SIMPLEX TRADING, LLC | CHICAGO, IL | $30K | — |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | BIRMINGHAM, AL | — | — |