MMK vs PMMF
State Street Prime Money Market ETF compared with iShares Prime Money Market ETF on yield, payout growth, payment schedule, cost and risk.
MMK
State Street Prime Money Market ETF
TTM yield · Monthly
PMMF
iShares Prime Money Market ETF
TTM yield · Weekly
Quick take
- PMMF yields more today: 3.62% vs 3.45% (forward).
- MMK pays every month; PMMF pays every week.
- MMK is cheaper to own: 0.18% vs 0.20% expense ratio.
- PMMF has the steadier distribution: consistency 97/100 vs 85/100.
Generated from the latest data on both pages. Not a recommendation.
Side by side
| Metric | MMK | PMMF |
|---|---|---|
| Share price | $100.21 | $100.27 |
| TTM yield | 2.30% | 3.87% |
| Forward yield | 3.45% | 3.62% |
| Annual payout per share | $3.4575 | $3.6346 |
| Payment frequency | Monthly | Weekly |
| Next ex-date | Oct 31, 2026 (est.) | Oct 28, 2026 (est.) |
| Expense ratio | 0.18% | 0.20% |
| 1-year payout growth | — | — |
| 5-year payout CAGR | — | — |
| Consecutive years of increases | — | — |
| Payout consistency (last 12) | 85/100 | 97/100 |
| 1-year total return | — | +3.6% |
| 1-year price return | — | -0.3% |
| Size (market cap / AUM) | 29.1M | 748.8M |
| Years paying | 0.6 | 1.6 |
| Sector / category | Prime Money Market | Prime Money Market |
✓ marks the more favourable figure where one exists (higher yield, growth, streak, consistency, return and size; lower cost, payout ratio and risk).
$10,000 invested today
| MMK | PMMF | |
|---|---|---|
| Shares | 99.8 | 99.7 |
| Income per year | $345 | $362 |
| Income per month (avg) | $29 | $30 |
At forward yields, before taxes. Model MMK · Model PMMF
Next payments
| Ex-date | Pay date | Per share | Status |
|---|---|---|---|
| MMK Oct 31, 2026 | Nov 14, 2026 | $0.2881 | Est. |
| MMK Nov 30, 2026 | Dec 14, 2026 | $0.2881 | Est. |
| MMK Dec 30, 2026 | Jan 13, 2027 | $0.2881 | Est. |
| PMMF Oct 28, 2026 | Nov 11, 2026 | $0.0699 | Est. |
| PMMF Nov 4, 2026 | Nov 18, 2026 | $0.0699 | Est. |
| PMMF Nov 11, 2026 | Nov 25, 2026 | $0.0699 | Est. |
Annual payouts per share
MMKPMMF
Regular payments only; the current year is year to date. Per-share amounts are not directly comparable when share prices differ, so read this chart for growth trends.
FAQ
Which has the higher dividend yield, MMK or PMMF?
PMMF currently has the higher trailing yield: MMK yields 2.30% and PMMF yields 3.87%. Yield changes daily with price, so check the live figures above.
How often do MMK and PMMF pay?
MMK pays every month and PMMF pays every week. MMK's next ex-date is Oct 31, 2026 and PMMF's is Oct 28, 2026.
Is MMK or PMMF better for income?
It depends on what you are optimising for. MMK and PMMF differ in yield, growth, payment schedule and risk profile; the table above puts every metric side by side so you can weigh them for your own goals. This page is data, not advice.