ARK Space & Defense Innovation ETF
ARKX
117 hedge funds and large institutions have $46.4M invested in ARK Space & Defense Innovation ETF in 2025 Q4 according to their latest regulatory filings, with 31 funds opening new positions, 21 increasing their positions, 19 reducing their positions, and 9 closing their positions.
244% more first-time investments, than exits
New positions opened: 31 | Existing positions closed: 9
28% more capital invested
Capital invested by funds: $36.1M → $46.4M (+$10.2M)
22% more funds holding
Funds holding: 96 → 117 (+21)
11% more repeat investments, than reductions
Existing positions increased: 21 | Existing positions reduced: 19
1.13% more ownership
Funds ownership: 8.15% → 9.28% (+1.1%)
8% less call options, than puts
Call options by funds: $77.7M | Put options by funds: $84.2M
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
LPL Financial
San Diego,
California
|
+$5.18M |
| 2 |
QC
Quadrature Capital
London,
United Kingdom
|
+$2.63M |
| 3 |
EAM
Eschler Asset Management
London,
United Kingdom
|
+$1.33M |
| 4 |
UBS Group
Zurich,
Switzerland
|
+$1.03M |
| 5 |
GS
GTS Securities
Miami,
Florida
|
+$860K |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
D.E. Shaw & Co
New York
|
-$1.69M |
| 2 |
Morgan Stanley
New York
|
-$1.22M |
| 3 |
Bank of America
Charlotte,
North Carolina
|
-$654K |
| 4 |
MLCM
M & L Capital Management
London,
United Kingdom
|
-$494K |
| 5 |
Walleye Capital
New York
|
-$493K |
ARKX Hedge Fund Activity: Q4 2025 in Review
117 of the 8,270 institutional investors tracked by Wall St. Rank reported a position in ARK Space & Defense Innovation ETF (ARKX) for Q4 2025, worth a combined $46.4M — up 28% from $36.1M a quarter earlier.
Buyers outnumbered sellers: 31 funds opened new ARKX positions and 9 closed out — a net gain of 22 holders — while 21 added to existing stakes and 19 trimmed.
The largest buyer was LPL Financial, adding an estimated $5.18M. The largest seller was D.E. Shaw & Co, exiting entirely with an estimated $1.69M sold.
- 117 institutional investors held ARK Space & Defense Innovation ETF (ARKX) as of Q4 2025, up from 96 in Q3 2025.
- Funds reported $46.4M of ARK Space & Defense Innovation ETF stock for Q4 2025, up 28% quarter-over-quarter.
- 31 funds opened new ARK Space & Defense Innovation ETF positions in Q4 2025 and 9 closed out, a net change of +22 holders.
- The largest ARK Space & Defense Innovation ETF buyer in Q4 2025 was LPL Financial, an estimated $5.18M added.
- The largest ARK Space & Defense Innovation ETF seller in Q4 2025 was D.E. Shaw & Co, an estimated $1.69M sold.
Based on aggregated 13F filings for Q4 2025.