INVESTMENT MANAGERS SER TR I (MDBX)
Institutional ownership reported to the SEC as of Q1 2026, across 3 quarters.
4
Reporting holders
$462.7K
Reported value
0.0%
Held as options
-2
Holder change
Options share is the part of reported value carried in derivative lines rather than shares. A high figure means institutions are expressing a view on this security without owning much of it.
Holders
| Filer | Value | Shares | Their book | Held | Change |
|---|---|---|---|---|---|
| Optiver Holding B.V. | $449.8K | 23,185 | 0.00% | 2q | +159.5%+$276.5K |
| SIMPLEX TRADING, LLC | $7.9K | 406 | 0.00% | new | NEW |
| GROUP ONE TRADING LLC | $5.1K | 261 | 0.00% | 2q | HELD |
| CITIGROUP INC | $19 | 1 | 0.00% | 2q | HELD |
Quarter by quarter
Coverage begins with the quarter ending 2018-12-31. Earlier filings exist only as occasional late amendments, too sparse to describe a market, so they are not shown.
| Quarter | Holders | Value | Shares | New | Added | Trimmed | Options |
|---|---|---|---|---|---|---|---|
| Q1 2026 | 4 | $462.7K | 23,853 | 1 | 1 | 0 | 0.0% |
| Q4 2025 | 6 | $1.8M | 25,313 | 6 | 0 | 0 | 0.0% |
| Q3 2025 | 1 | $3 | 80 | 1 | 0 | 0 | 0.0% |