iShares Government Money Market ETF
GMMF
8 hedge funds and large institutions have $28.4M invested in iShares Government Money Market ETF in 2025 Q2 according to their latest regulatory filings, with 3 funds opening new positions, increasing their positions, 2 reducing their positions, and 1 closing their positions.
200% more first-time investments, than exits
New positions opened: 3 | Existing positions closed: 1
33% more funds holding
Funds holding: 6 → 8 (+2)
1% less capital invested
Capital invested by funds: $28.7M → $28.4M (-$382K)
33.48% less ownership
Funds ownership: 86.73% → 53.25% (-33%)
100% less repeat investments, than reductions
Existing positions increased: 0 | Existing positions reduced: 2
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
TRCT
Tower Research Capital (TRC)
New York
|
+$538K |
| 2 |
HFAS
Hummer Financial Advisory Services
Chicago,
Illinois
|
+$401K |
| 3 |
Royal Bank of Canada
Toronto,
Ontario, Canada
|
+$60.2K |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Citadel Advisors
Miami,
Florida
|
-$1.33M |
| 2 |
Jane Street
New York
|
-$61.5K |
| 3 |
UBS Group
Zurich,
Switzerland
|
-$10K |
| Name | Holding | Trade Value |
Shares Change |
Change in Stake |
|
|---|---|---|---|---|---|
1
BlackRock
New York
| $25.1M | – | – | – |
|
|
2
Citadel Advisors
Miami,
Florida
| $954K | -$1.33M | -13,245 | -58% |
|
|
3
Jane Street
New York
| $760K | -$61.5K | -613 | -7% |
|
|
TRCT
4
Tower Research Capital (TRC)
New York
| $539K | +$538K | +5,363 | New |
|
|
HFAS
5
Hummer Financial Advisory Services
Chicago,
Illinois
| $402K | +$401K | +4,000 | New |
|
|
SC
6
Searle & Co
Greenwich,
Connecticut
| $301K | – | – | – |
|
|
FTUS
7
Flow Traders U.S.
New York
| $219K | – | – | – |
|
|
8
Royal Bank of Canada
Toronto,
Ontario, Canada
| $60K | +$60.2K | +600 | New |
|
|
9
UBS Group
Zurich,
Switzerland
| – | -$10K | -100 | Closed |
|
GMMF Hedge Fund Activity: Q2 2025 in Review
8 of the 7,596 institutional investors tracked by Wall St. Rank reported a position in iShares Government Money Market ETF (GMMF) for Q2 2025, worth a combined $28.4M — down 1.3% from $28.7M a quarter earlier.
Buyers outnumbered sellers: 3 funds opened new GMMF positions and 1 closed out — a net gain of 2 holders — while 0 added to existing stakes and 2 trimmed.
The largest buyer was Tower Research Capital (TRC), opening a new position worth an estimated $538K. The largest seller was Citadel Advisors, cutting an estimated $1.33M.
- 8 institutional investors held iShares Government Money Market ETF (GMMF) as of Q2 2025, up from 6 in Q1 2025.
- Funds reported $28.4M of iShares Government Money Market ETF stock for Q2 2025, down 1.3% quarter-over-quarter.
- 3 funds opened new iShares Government Money Market ETF positions in Q2 2025 and 1 closed out, a net change of +2 holders.
- The largest iShares Government Money Market ETF buyer in Q2 2025 was Tower Research Capital (TRC), an estimated $538K added.
- The largest iShares Government Money Market ETF seller in Q2 2025 was Citadel Advisors, an estimated $1.33M sold.
Based on aggregated 13F filings for Q2 2025.