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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.

New
Increased
Maintained
Reduced
Closed

200% more first-time investments, than exits

New positions opened: 3 | Existing positions closed: 1

33% more funds holding

Funds holding: 6 → 8 (+2)

0.44% less ownership

Funds ownership: 31.45% → 31.01% (-0.44%)

29% less capital inflows, than outflows

Capital inflows: $999K | Capital outflows: $1.4M

100% less repeat investments, than reductions

Existing positions increased: 0 | Existing positions reduced: 2

Holders
8
Holders Change
+2
Holders Change %
+33.33%
% of All Funds
0.1%
Holding in Top 10
–
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
–
New
3
Increased
–
Reduced
2
Closed
1
Calls
–
Puts
–
Net Calls
–
Net Calls Change
–

Top Buyers

Rank Fund Capital Flow
1
Tower Research Capital (TRC)
Tower Research Capital (TRC)
New York
+$538K
2
HFAS
Hummer Financial Advisory Services
Illinois
+$401K
3
Royal Bank of Canada
Royal Bank of Canada
Ontario, Canada
+$60.2K

Top Sellers

Rank Fund Capital Flow
1
Citadel Advisors
Citadel Advisors
Florida
-$1.33M
2
Jane Street
Jane Street
New York
-$61.5K
3
UBS Group
UBS Group
Switzerland
-$10K

GMMF Hedge Fund Activity: Q2 2025 in Review

8 of the 7,625 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.