MERCK & CO INC OPTION is a security (CUSIP 58933Y905) tracked across SEC portfolio filings. 11 institutional managers reported $455.9M on Form 13F as of 2026-06-30.
| Manager | Location | Value | Shares |
|---|---|---|---|
| JPMORGAN CHASE & CO | NEW YORK, NY | $194.8M | — |
| IMC-Chicago, LLC | CHICAGO, IL | $123.5M | — |
| SIMPLEX TRADING, LLC | CHICAGO, IL | $75.3M | — |
| GROUP ONE TRADING, L.P. | CHICAGO, IL | $47.4M | — |
| Gladius Capital Management LP | PARK CITY, UT | $14.0M | — |
| AlphaCore Capital LLC | LA JOLLA, CA | $520K | 100 |
| SAXON INTERESTS, INC. | HOUSTON, TX | $373K | — |
| Marathon Trading Investment Management LLC | RADNOR, PA | $24K | — |
| HRT FINANCIAL LP | NEW YORK, NY | $10K | 79,400 |
| Capital Markets Trading UK LLP | LONDON, X0 | $1K | — |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | BIRMINGHAM, AL | — | — |