Roundhill COST WeeklyPay ETF
COSW
5 hedge funds and large institutions have $9.13M invested in Roundhill COST WeeklyPay ETF in 2026 Q1 according to their latest regulatory filings, with 2 funds opening new positions, 1 increasing their positions, 2 reducing their positions, and 2 closing their positions.
0% more funds holding
Funds holding: 5 → 5 (0)
0% more first-time investments, than exits
New positions opened: 2 | Existing positions closed: 2
9.36% less ownership
Funds ownership: 73.12% → 63.76% (-9.4%)
50% less repeat investments, than reductions
Existing positions increased: 1 | Existing positions reduced: 2
53% less capital invested
Capital invested by funds: $19.6M → $9.13M (-$10.4M)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
OMC
Old Mission Capital
Chicago,
Illinois
|
+$583K |
| 2 |
Susquehanna International Group
Bala Cynwyd,
Pennsylvania
|
+$248K |
| 3 |
GS
GTS Securities
New York
|
+$103K |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
ETC
Exchange Traded Concepts
Oklahoma City,
Oklahoma
|
-$12.6M |
| 2 |
Jane Street
New York
|
-$606K |
| 3 |
UBS Group
Zurich,
Switzerland
|
-$26.1K |
| 4 |
Simplex Trading
Chicago,
Illinois
|
-$142 |
| Name | Holding | Trade Value |
Shares Change |
Change in Stake |
|
|---|---|---|---|---|---|
|
ETC
1
Exchange Traded Concepts
Oklahoma City,
Oklahoma
| $7.95M | -$12.6M | -267,927 | -61% |
|
|
OMC
2
Old Mission Capital
Chicago,
Illinois
| $571K | +$583K | +12,354 | New |
|
|
GS
3
GTS Securities
New York
| $363K | +$103K | +2,178 | +38% |
|
|
4
Susquehanna International Group
Bala Cynwyd,
Pennsylvania
| $243K | +$248K | +5,256 | New |
|
|
5
Simplex Trading
Chicago,
Illinois
| $4.57K | -$142 | -3 | -3% |
|
|
6
Jane Street
New York
| – | -$606K | -14,256 | Closed |
|
|
7
UBS Group
Zurich,
Switzerland
| – | -$26.1K | -614 | Closed |
|
COSW Hedge Fund Activity: Q1 2026 in Review
5 of the 8,128 institutional investors tracked by Wall St. Rank reported a position in Roundhill COST WeeklyPay ETF (COSW) for Q1 2026, worth a combined $9.13M — down 53% from $19.6M a quarter earlier.
Fund positioning in COSW was balanced in Q1 2026: 2 funds opened new positions, 2 closed out, 1 added to existing stakes and 2 trimmed.
The largest buyer was Old Mission Capital, opening a new position worth an estimated $583K. The largest seller was Exchange Traded Concepts, cutting an estimated $12.6M.
- 5 institutional investors held Roundhill COST WeeklyPay ETF (COSW) as of Q1 2026, unchanged from Q4 2025.
- Funds reported $9.13M of Roundhill COST WeeklyPay ETF stock for Q1 2026, down 53% quarter-over-quarter.
- 2 funds opened new Roundhill COST WeeklyPay ETF positions in Q1 2026 and 2 closed out, a net change of 0 holders.
- The largest Roundhill COST WeeklyPay ETF buyer in Q1 2026 was Old Mission Capital, an estimated $583K added.
- The largest Roundhill COST WeeklyPay ETF seller in Q1 2026 was Exchange Traded Concepts, an estimated $12.6M sold.
Based on aggregated 13F filings for Q1 2026.