Roundhill Weekly T-Bill ETF
WEEK
6 hedge funds and large institutions have $89.3M invested in Roundhill Weekly T-Bill ETF in 2025 Q4 according to their latest regulatory filings, with 0 funds opening new positions, 3 increasing their positions, 2 reducing their positions, and 1 closing their positions.
50% more repeat investments, than reductions
Existing positions increased: 3 | Existing positions reduced: 2
2% less capital invested
Capital invested by funds: $91.5M → $89.3M (-$2.18M)
4.36% less ownership
Funds ownership: 66.75% → 62.39% (-4.4%)
14% less funds holding
Funds holding: 7 → 6 (-1)
100% less first-time investments, than exits
New positions opened: 0 | Existing positions closed: 1
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
GS
GTS Securities
New York
|
+$390K |
| 2 |
OCM
One Capital Management
Westlake Village,
California
|
+$132K |
| 3 |
Citadel Advisors
Miami,
Florida
|
+$41.5K |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Jane Street
New York
|
-$2.56M |
| 2 |
PWM
Prosperity Wealth Management
San Ramon,
California
|
-$216K |
| 3 |
OMC
Old Mission Capital
Chicago,
Illinois
|
-$15.8K |
| Name | Holding | Trade Value |
Shares Change |
Change in Stake |
|
|---|---|---|---|---|---|
|
ETC
1
Exchange Traded Concepts
Oklahoma City,
Oklahoma
| $86.3M | – | – | – |
|
|
OCM
2
One Capital Management
Westlake Village,
California
| $1.08M | +$132K | +1,321 | +14% |
|
|
3
Jane Street
New York
| $688K | -$2.56M | -25,545 | -79% |
|
|
GS
4
GTS Securities
New York
| $646K | +$390K | +3,895 | +152% |
|
|
5
Citadel Advisors
Miami,
Florida
| $274K | +$41.5K | +415 | +18% |
|
|
OMC
6
Old Mission Capital
Chicago,
Illinois
| $255K | -$15.8K | -158 | -6% |
|
|
PWM
7
Prosperity Wealth Management
San Ramon,
California
| – | -$216K | -2,156 | Closed |
|
WEEK Hedge Fund Activity: Q4 2025 in Review
6 of the 8,223 institutional investors tracked by Wall St. Rank reported a position in Roundhill Weekly T-Bill ETF (WEEK) for Q4 2025, worth a combined $89.3M — down 2.4% from $91.5M a quarter earlier.
Sellers outnumbered buyers: 1 fund closed out of WEEK and 0 opened new positions — a net loss of 1 holder — while 2 trimmed existing stakes and 3 added.
The largest buyer was GTS Securities, adding an estimated $390K. The largest seller was Jane Street, cutting an estimated $2.56M.
- 6 institutional investors held Roundhill Weekly T-Bill ETF (WEEK) as of Q4 2025, down from 7 in Q3 2025.
- Funds reported $89.3M of Roundhill Weekly T-Bill ETF stock for Q4 2025, down 2.4% quarter-over-quarter.
- 0 funds opened new Roundhill Weekly T-Bill ETF positions in Q4 2025 and 1 closed out, a net change of -1 holder.
- The largest Roundhill Weekly T-Bill ETF buyer in Q4 2025 was GTS Securities, an estimated $390K added.
- The largest Roundhill Weekly T-Bill ETF seller in Q4 2025 was Jane Street, an estimated $2.56M sold.
Based on aggregated 13F filings for Q4 2025.