ARK 21Shares Bitcoin ETF
ARKB
171 hedge funds and large institutions have $1.03B invested in ARK 21Shares Bitcoin ETF in 2025 Q4 according to their latest regulatory filings, with 30 funds opening new positions, 63 increasing their positions, 39 reducing their positions, and 31 closing their positions.
165% more call options, than puts
Call options by funds: $12.7M | Put options by funds: $4.78M
62% more repeat investments, than reductions
Existing positions increased: 63 | Existing positions reduced: 39
3% less first-time investments, than exits
New positions opened: 30 | Existing positions closed: 31
1% less funds holding
Funds holding: 173 → 171 (-2)
13% less funds holding in top 10
Funds holding in top 10: 8 → 7 (-1)
33% less capital invested
Capital invested by funds: $1.53B → $1.03B (-$502M)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
SSA
Schonfeld Strategic Advisors
New York
|
+$26M |
| 2 |
AIM
ARK Investment Management
St. Petersburg,
Florida
|
+$18.2M |
| 3 |
Susquehanna International Group
Bala Cynwyd,
Pennsylvania
|
+$15.8M |
| 4 |
Millennium Management
New York
|
+$11.8M |
| 5 |
BW
BIP Wealth
Atlanta,
Georgia
|
+$4.64M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Jane Street
New York
|
-$215M |
| 2 |
AMH
Apollo Management Holdings
New York
|
-$48.5M |
| 3 |
HI
HBK Investments
Dallas,
Texas
|
-$42.7M |
| 4 |
EC
Elequin Capital
New York
|
-$12M |
| 5 |
GGI
Galaxy Group Investments
New York
|
-$5.82M |
ARKB Hedge Fund Activity: Q4 2025 in Review
171 of the 8,270 institutional investors tracked by Wall St. Rank reported a position in ARK 21Shares Bitcoin ETF (ARKB) for Q4 2025, worth a combined $1.03B — down 33% from $1.53B a quarter earlier.
Sellers outnumbered buyers: 31 funds closed out of ARKB and 30 opened new positions — a net loss of 1 holder — while 39 trimmed existing stakes and 63 added.
The largest buyer was Schonfeld Strategic Advisors, adding an estimated $26M. The largest seller was Jane Street, cutting an estimated $215M.
- 171 institutional investors held ARK 21Shares Bitcoin ETF (ARKB) as of Q4 2025, down from 173 in Q3 2025.
- Funds reported $1.03B of ARK 21Shares Bitcoin ETF stock for Q4 2025, down 33% quarter-over-quarter.
- 30 funds opened new ARK 21Shares Bitcoin ETF positions in Q4 2025 and 31 closed out, a net change of -1 holder.
- The largest ARK 21Shares Bitcoin ETF buyer in Q4 2025 was Schonfeld Strategic Advisors, an estimated $26M added.
- The largest ARK 21Shares Bitcoin ETF seller in Q4 2025 was Jane Street, an estimated $215M sold.
Based on aggregated 13F filings for Q4 2025.