Roundhill Weekly T-Bill ETF
WEEK
7 hedge funds and large institutions have $91.5M invested in Roundhill Weekly T-Bill ETF in 2025 Q3 according to their latest regulatory filings, with 4 funds opening new positions, 1 increasing their positions, 1 reducing their positions, and 1 closing their positions.
300% more first-time investments, than exits
New positions opened: 4 | Existing positions closed: 1
75% more funds holding
Funds holding: 4 → 7 (+3)
4% more capital invested
Capital invested by funds: $87.8M → $91.5M (+$3.63M)
0% more repeat investments, than reductions
Existing positions increased: 1 | Existing positions reduced: 1
15.29% less ownership
Funds ownership: 82.04% → 66.75% (-15%)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Jane Street
New York
|
+$2.9M |
| 2 |
OCM
One Capital Management
Westlake Village,
California
|
+$948K |
| 3 |
OMC
Old Mission Capital
Chicago,
Illinois
|
+$271K |
| 4 |
Citadel Advisors
Miami,
Florida
|
+$232K |
| 5 |
PWM
Prosperity Wealth Management
San Ramon,
California
|
+$216K |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
GS
GTS Securities
New York
|
-$659K |
| 2 |
Susquehanna International Group
Bala Cynwyd,
Pennsylvania
|
-$244K |
| Name | Holding | Trade Value |
Shares Change |
Change in Stake |
|
|---|---|---|---|---|---|
|
ETC
1
Exchange Traded Concepts
Oklahoma City,
Oklahoma
| $86.3M | – | – | – |
|
|
2
Jane Street
New York
| $3.24M | +$2.9M | +28,998 | +848% |
|
|
OCM
3
One Capital Management
Westlake Village,
California
| $947K | +$948K | +9,472 | New |
|
|
OMC
4
Old Mission Capital
Chicago,
Illinois
| $271K | +$271K | +2,706 | New |
|
|
GS
5
GTS Securities
New York
| $257K | -$659K | -6,591 | -72% |
|
|
6
Citadel Advisors
Miami,
Florida
| $232K | +$232K | +2,319 | New |
|
|
PWM
7
Prosperity Wealth Management
San Ramon,
California
| $216K | +$216K | +2,156 | New |
|
|
8
Susquehanna International Group
Bala Cynwyd,
Pennsylvania
| – | -$244K | -2,435 | Closed |
|
WEEK Hedge Fund Activity: Q3 2025 in Review
7 of the 7,619 institutional investors tracked by Wall St. Rank reported a position in Roundhill Weekly T-Bill ETF (WEEK) for Q3 2025, worth a combined $91.5M — up 4.1% from $87.8M a quarter earlier.
Buyers outnumbered sellers: 4 funds opened new WEEK positions and 1 closed out — a net gain of 3 holders — while 1 added to existing stakes and 1 trimmed.
The largest buyer was Jane Street, adding an estimated $2.9M. The largest seller was GTS Securities, cutting an estimated $659K.
- 7 institutional investors held Roundhill Weekly T-Bill ETF (WEEK) as of Q3 2025, up from 4 in Q2 2025.
- Funds reported $91.5M of Roundhill Weekly T-Bill ETF stock for Q3 2025, up 4.1% quarter-over-quarter.
- 4 funds opened new Roundhill Weekly T-Bill ETF positions in Q3 2025 and 1 closed out, a net change of +3 holders.
- The largest Roundhill Weekly T-Bill ETF buyer in Q3 2025 was Jane Street, an estimated $2.9M added.
- The largest Roundhill Weekly T-Bill ETF seller in Q3 2025 was GTS Securities, an estimated $659K sold.
Based on aggregated 13F filings for Q3 2025.