iShares Government Money Market ETF
GMMF
11 hedge funds and large institutions have $33.4M invested in iShares Government Money Market ETF in 2026 Q1 according to their latest regulatory filings, with 3 funds opening new positions, 2 increasing their positions, 3 reducing their positions, and 1 closing their positions.
200% more first-time investments, than exits
New positions opened: 3 | Existing positions closed: 1
22% more funds holding
Funds holding: 9 → 11 (+2)
0% more funds holding in top 10
Funds holding in top 10: 1 → 1 (0)
1% less capital invested
Capital invested by funds: $33.9M → $33.4M (-$495K)
5.21% less ownership
Funds ownership: 37.12% → 31.91% (-5.2%)
33% less repeat investments, than reductions
Existing positions increased: 2 | Existing positions reduced: 3
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Cambridge Investment Research Advisors
Fairfield,
Iowa
|
+$1.65M |
| 2 |
HFAS
Hummer Financial Advisory Services
Chicago,
Illinois
|
+$512K |
| 3 |
GBWM
Granite Bay Wealth Management
Portsmouth,
New Hampshire
|
+$397K |
| 4 |
TSMHT
Thurston Springer Miller Herd & Titak
Indianapolis,
Indiana
|
+$198K |
| 5 |
Wells Fargo
San Francisco,
California
|
+$100 |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
TRCT
Tower Research Capital (TRC)
New York
|
-$2.58M |
| 2 |
Citadel Advisors
Miami,
Florida
|
-$519K |
| 3 |
Jane Street
New York
|
-$205K |
| 4 |
NWM
Northcape Wealth Management
Williamsville,
New York
|
-$40.2K |
| Name | Holding | Trade Value |
Shares Change |
Change in Stake |
|
|---|---|---|---|---|---|
1
BlackRock
New York
| $25.1M | – | – | – |
|
|
HFAS
2
Hummer Financial Advisory Services
Chicago,
Illinois
| $3.22M | +$512K | +5,100 | +19% |
|
|
3
Cambridge Investment Research Advisors
Fairfield,
Iowa
| $1.65M | +$1.65M | +16,407 | New |
|
|
4
Jane Street
New York
| $919K | -$205K | -2,041 | -18% |
|
|
TSMHT
5
Thurston Springer Miller Herd & Titak
Indianapolis,
Indiana
| $698K | +$198K | +1,971 | +40% |
|
|
6
Citadel Advisors
Miami,
Florida
| $612K | -$519K | -5,171 | -46% |
|
|
NWM
7
Northcape Wealth Management
Williamsville,
New York
| $432K | -$40.2K | -400 | -9% |
|
|
GBWM
8
Granite Bay Wealth Management
Portsmouth,
New Hampshire
| $398K | +$397K | +3,954 | New |
|
|
SC
9
Searle & Co
Greenwich,
Connecticut
| $302K | – | – | – |
|
10
Royal Bank of Canada
Toronto,
Ontario, Canada
| $1K | – | – | – |
|
|
11
Wells Fargo
San Francisco,
California
| $64 | +$100 | +1 | New |
|
|
TRCT
12
Tower Research Capital (TRC)
New York
| – | -$2.58M | -25,733 | Closed |
|
GMMF Hedge Fund Activity: Q1 2026 in Review
11 of the 8,132 institutional investors tracked by Wall St. Rank reported a position in iShares Government Money Market ETF (GMMF) for Q1 2026, worth a combined $33.4M — down 1.5% from $33.9M a quarter earlier.
Buyers outnumbered sellers: 3 funds opened new GMMF positions and 1 closed out — a net gain of 2 holders — while 2 added to existing stakes and 3 trimmed.
The largest buyer was Cambridge Investment Research Advisors, opening a new position worth an estimated $1.65M. The largest seller was Tower Research Capital (TRC), exiting entirely with an estimated $2.58M sold.
- 11 institutional investors held iShares Government Money Market ETF (GMMF) as of Q1 2026, up from 9 in Q4 2025.
- Funds reported $33.4M of iShares Government Money Market ETF stock for Q1 2026, down 1.5% quarter-over-quarter.
- 3 funds opened new iShares Government Money Market ETF positions in Q1 2026 and 1 closed out, a net change of +2 holders.
- The largest iShares Government Money Market ETF buyer in Q1 2026 was Cambridge Investment Research Advisors, an estimated $1.65M added.
- The largest iShares Government Money Market ETF seller in Q1 2026 was Tower Research Capital (TRC), an estimated $2.58M sold.
Based on aggregated 13F filings for Q1 2026.