Tradr 2X Long MDB Daily ETF
MDBX
MDBX was delisted on the 20th of April, 2026.
6 hedge funds and large institutions have $1.8M invested in Tradr 2X Long MDB Daily ETF in 2025 Q4 according to their latest regulatory filings, with 6 funds opening new positions, increasing their positions, reducing their positions, and 1 closing their positions.
59,934% more capital invested
Capital invested by funds: $3K → $1.8M (+$1.8M)
500% more funds holding
Funds holding: 1 → 6 (+5)
500% more first-time investments, than exits
New positions opened: 6 | Existing positions closed: 1
45.89% more ownership
Funds ownership: 0.13% → 46.02% (+46%)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Citadel Advisors
Miami,
Florida
|
+$531K |
| 2 |
Optiver Holding
Amsterdam,
Netherlands
|
+$502K |
| 3 |
Susquehanna International Group
Bala Cynwyd,
Pennsylvania
|
+$358K |
| 4 |
HCM
Hollencrest Capital Management
Newport Beach,
California
|
+$16.9K |
| 5 |
Group One Trading
Chicago,
Illinois
|
+$14.7K |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Simplex Trading
Chicago,
Illinois
|
-$3K |
| Name | Holding | Trade Value |
Shares Change |
Change in Stake |
|
|---|---|---|---|---|---|
|
1
Citadel Advisors
Miami,
Florida
| $672K | +$531K | +9,445 | New |
|
|
2
Optiver Holding
Amsterdam,
Netherlands
| $636K | +$502K | +8,934 | New |
|
|
3
Susquehanna International Group
Bala Cynwyd,
Pennsylvania
| $453K | +$358K | +6,372 | New |
|
|
HCM
4
Hollencrest Capital Management
Newport Beach,
California
| $21.3K | +$16.9K | +300 | New |
|
|
5
Group One Trading
Chicago,
Illinois
| $18.6K | +$14.7K | +261 | New |
|
6
Citigroup
New York
| $71 | +$56 | +1 | New |
|
|
7
Simplex Trading
Chicago,
Illinois
| – | -$3K | -80 | Closed |
|
MDBX Hedge Fund Activity: Q4 2025 in Review
6 of the 8,226 institutional investors tracked by Wall St. Rank reported a position in Tradr 2X Long MDB Daily ETF (MDBX) for Q4 2025, worth a combined $1.8M — up 59,934% from $3K a quarter earlier.
Buyers outnumbered sellers: 6 funds opened new MDBX positions and 1 closed out — a net gain of 5 holders — while 0 added to existing stakes and 0 trimmed.
The largest buyer was Citadel Advisors, opening a new position worth an estimated $531K. The largest seller was Simplex Trading, exiting entirely with an estimated $3K sold.
- 6 institutional investors held Tradr 2X Long MDB Daily ETF (MDBX) as of Q4 2025, up from 1 in Q3 2025.
- Funds reported $1.8M of Tradr 2X Long MDB Daily ETF stock for Q4 2025, up 59,934% quarter-over-quarter.
- 6 funds opened new Tradr 2X Long MDB Daily ETF positions in Q4 2025 and 1 closed out, a net change of +5 holders.
- The largest Tradr 2X Long MDB Daily ETF buyer in Q4 2025 was Citadel Advisors, an estimated $531K added.
- The largest Tradr 2X Long MDB Daily ETF seller in Q4 2025 was Simplex Trading, an estimated $3K sold.
Based on aggregated 13F filings for Q4 2025.