iShares Prime Money Market ETF
$100.32+0.03 (+0.03%)
- 0.20%
- $760M
- +2.8%
- 3.94%
- 0.1M sh
- $100.27
- low $100.10high $100.57
The ETF.net PMMF Grade
B
Score 59 out of 100
- 42 of 78
Score 59 of 100 falls in the B band. A is 70 or higher, B 55 to under 70, C 40 to under 55, D 25 to under 40, F under 25.
Cost
The fund’s net expense ratio, ranked against its category.C42 out of 100Rank 39 of 78Mission
Whether the fund did what it promised, tested against its stated mandate.B69 out of 100Rank 65 of 66Risk
How the fund held up when markets fell: downside volatility, drawdowns and tail loss.B68 out of 100Rank 1 of 75Tradability
How easy the fund is to trade: daily volume, and how far its price strays from net asset value.A73 out of 100Rank 17 of 78Holdings
How concentrated the fund is, and how complete and current its disclosed holdings are.C49 out of 100Rank 48 of 77Durability
Whether the fund is likely to stay open, judged by its age, its assets and its issuer’s assets.B66 out of 100Rank 28 of 78
Our read on PMMF
BMoney market discipline in an ETF shell. PMMF runs a short-term credit portfolio under the SEC's strict Rule 2a-7 money fund rules, pays income monthly, and trades on an exchange during the day.
The fund seeks current income consistent with liquidity and principal stability while providing intraday trading flexibility.
Why people hold it
- Held to Rule 2a-7, the SEC's money market rulebook, for credit quality, maturity and liquidity, with daily portfolio disclosure.blackrock.com
- Prime, not government-only. It buys short-term corporate credit instead of sticking to Treasury and agency paper, spread across roughly 120 positions.blackrock.com
- What it holds lines up with what it promises: current income with liquidity and principal stability, plus intraday trading. Monthly distributions.
- The 0.20% fee sits right at the median for cash-alternative funds, so the ETF wrapper doesn't carry a novelty premium.
Worth knowing
- Cheaper parking spots exist: ICSH at 0.08% and JPST at 0.18%. Both are ultra-short bond funds, though, not 2a-7 money market funds.
- Shares change hands at a market price driven by supply and demand as well as NAV, which is a different experience from a traditional money fund account.dividend.com
- Prime paper carries issuer credit risk that Treasury-only cash funds sidestep. Launched in 2025, so its record is still short.blackrock.com
PMMF Holdings
- Other
- 248
- 46%
- Tri-Party J.p. Morgan Securities L
Geography
- United States97.53%
- Saudi Arabia0.66%
- France0.52%
- Australia0.39%
- United Arab Emirates0.26%
- United Kingdom0.26%
- Netherlands0.25%
- Canada0.13%
PMMF Performance
Shows how $10,000 changes over the selected period, with cash distributions reinvested at the closing price on each ex-dividend date.
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PMMF$10,278
Returns run to the Oct 12, 2026 close, with cash distributions reinvested. Each period starts on the same date that many months or years earlier. Periods over one year show the average yearly return.
| Period | PMMF |
|---|---|
| Year to date | +1.9% |
| 1 month | +0.4% |
| 3 months | +1.1% |
| 1 year | +2.8% |
| 3 years | — |
| 5 years | — |
| 10 years | — |
Calendar-year total return with cash distributions hypothetically reinvested at the ex-dividend date’s closing price. The current year shows year to date.
| Year | Return bar | PMMF |
|---|---|---|
| 2026 YTD | +1.9% | |
| 2025 | +3.8% |
PMMF in the news
PMMF Dividends
- 3.94%
- $3.95
- $0.08 per share
- Weekly
Distribution history
PMMF Risk
- 0.2%
How it’s calculated: standard deviation
The sample standard deviation of monthly total returns, multiplied by the square root of 12.
Uses up to 36 complete months, with at least 12 required. Total returns include reinvested distributions.
- −0.66
How it’s calculated: Sharpe ratio
Subtract each month’s Treasury-bill return from the fund’s monthly total return.
Divide the average of those excess returns by their sample standard deviation, then multiply by the square root of 12.
Uses up to 36 complete months, with at least 12 required. Each month uses the Treasury yield quoted at the end of the previous month.
- −0.1%
How it’s calculated: maximum drawdown
The largest percentage decline from an earlier peak, using total returns with reinvested distributions.
Uses up to five years through the last close, with at least 12 months required.
- −0.01
How it’s calculated: beta
The beta figure is supplied by FMP. The comparison index depends on the fund’s broad asset class.
PMMF Cost
0.20%
PMMF0.20%
- The middle half of Cash & Ultra-Short Income funds
- Median 0.19%
41 of the 78 Cash & Ultra-Short Income funds charge less.
Other funds in Cash & Ultra-Short Income
- BDLUXDoubleLine Ultrashort Income ETFExpense ratio 0.18%1 year return —
- BULSTState Street Ultra Short Term Bond ETFExpense ratio 0.20%1 year return +3.1%
- BRAVINorthern Trust Ultra-Short Fixed Income ETFExpense ratio 0.26%1 year return +3.8%
- BBUXXStrive Enhanced Income Short Maturity ETFExpense ratio 0.26%1 year return +3.8%
- BGMOCGMO Ultra-Short Income ETFExpense ratio 0.20%1 year return —