iShares Prime Money Market ETF
PMMF
39 hedge funds and large institutions have $188M invested in iShares Prime Money Market ETF in 2026 Q2 according to their latest regulatory filings, with 15 funds opening new positions, 13 increasing their positions, 5 reducing their positions, and 5 closing their positions.
1,306% more capital inflows, than outflows
Capital inflows: $48.2M | Capital outflows: $3.43M
200% more first-time investments, than exits
New positions opened: 15 | Existing positions closed: 5
160% more repeat investments, than reductions
Existing positions increased: 13 | Existing positions reduced: 5
30% more funds holding
Funds holding: 30 → 39 (+9)
0.05% more ownership
Funds ownership: 29.53% → 29.58% (+0.05%)
50% less funds holding in top 10
Funds holding in top 10: 2 → 1 (-1)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Cambridge Investment Research Advisors
Fairfield,
Iowa
|
+$15.5M |
| 2 |
TD Waterhouse Canada
Toronto,
Ontario, Canada
|
+$10M |
| 3 |
Royal Bank of Canada
Toronto,
Ontario, Canada
|
+$4.97M |
| 4 |
HRT Financial
New York
|
+$2.23M |
| 5 |
Hudock Inc
Williamsport,
Pennsylvania
|
+$2.15M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Stewardship Advisors
Mount Joy,
Pennsylvania
|
-$1.56M |
| 2 |
Citadel Advisors
Miami,
Florida
|
-$967K |
| 3 |
DZ Bank
Frankfurt Am Main,
Germany
|
-$433K |
| 4 |
Wedbush Securities
Los Angeles,
California
|
-$260K |
| 5 |
Sulzberger Capital Advisors
Miami,
Florida
|
-$85.1K |
PMMF Hedge Fund Activity: Q2 2026 in Review
39 of the 8,367 institutional investors tracked by Wall St. Rank reported a position in iShares Prime Money Market ETF (PMMF) for Q2 2026, worth a combined $188M — up 31% from $143M a quarter earlier.
Buyers outnumbered sellers: 15 funds opened new PMMF positions and 5 closed out — a net gain of 10 holders — while 13 added to existing stakes and 5 trimmed.
The largest buyer was Cambridge Investment Research Advisors, adding an estimated $15.5M. The largest seller was Stewardship Advisors, cutting an estimated $1.56M.
- 39 institutional investors held iShares Prime Money Market ETF (PMMF) as of Q2 2026, up from 30 in Q1 2026.
- Funds reported $188M of iShares Prime Money Market ETF stock for Q2 2026, up 31% quarter-over-quarter.
- 15 funds opened new iShares Prime Money Market ETF positions in Q2 2026 and 5 closed out, a net change of +10 holders.
- The largest iShares Prime Money Market ETF buyer in Q2 2026 was Cambridge Investment Research Advisors, an estimated $15.5M added.
- The largest iShares Prime Money Market ETF seller in Q2 2026 was Stewardship Advisors, an estimated $1.56M sold.
Based on aggregated 13F filings for Q2 2026.