Who Owns INVESTMENT MANAGERS SER TR I (MDBX)?Hedge Fund & Institutional Holders
$22.28-0.47 (-2.07%)BATS
Institutional Holders
6
as of Q4 2025
Total Institutional Value
$635.2B
% of Float Held
—
QoQ Change in Holders
+6 / -1
Price History
MDBX — Biggest New Institutional Buyers This Quarter
| Fund | Action | Shares Added | Value Added |
|---|---|---|---|
| Optiver Holding B.V. | New Position | +9K | +$635K |
| GROUP ONE TRADING LLC | New Position | +261 | +$18K |
| HOLLENCREST CAPITAL MANAGEMENT | New Position | +300 | +$0 |
| CITADEL ADVISORS LLC | New Position | +9K | +$0 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | New Position | +6K | +$0 |
| CITIGROUP INC | New Position | +1 | +$0 |
MDBX — Institutions Reducing or Closing Positions
| Fund | Action | Shares Sold | Value Sold |
|---|---|---|---|
| SIMPLEX TRADING, LLC | Closed Position | -80 | -$3K |
Top Institutional Holders(Q4 2025)
| # | Fund | Shares | Value | % of Portfolio | Type |
|---|---|---|---|---|---|
| 1 | Optiver Holding B.V. | 8,934 | $635K | 0.00% | Share |
| 2 | GROUP ONE TRADING LLC | 261 | $18K | 0.00% | Share |
| 3 | CITIGROUP INC | 1 | $0 | 0.00% | Share |
| 4 | HOLLENCREST CAPITAL MANAGEMENT | 300 | $0 | 0.00% | Share |
| 5 | CITADEL ADVISORS LLC | 9,445 | $0 | 0.00% | Share |
| 6 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | 6,372 | $0 | 0.00% | Share |
MDBX Institutional Ownership History
| Quarter | Holders | Total Value | Change |
|---|---|---|---|
| Q4 2025 | 6 | $653K | +5 |
| Q3 2025 | 1 | $3K | — |
As of Q4 2025, 6 institutional investors hold MDBX (INVESTMENT MANAGERS SER TR I). The largest holder is Optiver Holding B.V. with $635K in shares. This quarter, 6 institutions opened new positions and 1 closed their positions.
Frequently Asked Questions
How many hedge funds own MDBX?
As of Q4 2025, 6 institutional investors report holding MDBX (INVESTMENT MANAGERS SER TR I) in their 13F filings.
Who is the largest institutional holder of MDBX?
The largest institutional holder of MDBX is Optiver Holding B.V. with $635K in shares.
Is institutional ownership of MDBX increasing or decreasing?
This quarter, 6 institutions opened new positions in MDBX and 1 closed their positions.