GMMF vs VOO
iShares Government Money Market ETF compared with Vanguard S&P 500 ETF on yield, payout growth, payment schedule, cost and risk.
GMMF
iShares Government Money Market ETF
TTM yield · Weekly
VOO
Vanguard S&P 500 ETF
TTM yield · Quarterly
Quick take
- GMMF yields more today: 3.37% vs 1.11% (forward).
- GMMF pays every week; VOO pays every quarter.
- Over the last year VOO delivered the higher total return: +20.0% vs +3.3% (price change plus payouts).
- VOO is cheaper to own: 0.03% vs 0.20% expense ratio.
Generated from the latest data on both pages. Not a recommendation.
Side by side
| Metric | GMMF | VOO |
|---|---|---|
| Share price | $100.32 | $704.07 |
| TTM yield | 3.52% | 1.04% |
| Forward yield | 3.37% | 1.11% |
| Annual payout per share | $3.3824 | $7.848 |
| Payment frequency | Weekly | Quarterly |
| Next ex-date | Sep 9, 2026 (est.) | Sep 25, 2026 (est.) |
| Expense ratio | 0.20% | 0.03% |
| 1-year payout growth | — | +5.9% |
| 5-year payout CAGR | — | +6.8% |
| Consecutive years of increases | — | 1 year |
| Payout consistency (last 12) | 99/100 | 93/100 |
| 1-year total return | +3.3% | +20.0% |
| 1-year price return | -0.2% | +18.7% |
| Size (market cap / AUM) | 190.6M | 1.7T |
| Years paying | 1.5 | 16.0 |
| Sector / category | Money Market-Taxable | Large Blend |
✓ 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
| GMMF | VOO | |
|---|---|---|
| Shares | 99.7 | 14.2 |
| Income per year | $337 | $111 |
| Income per month (avg) | $28 | $9 |
At forward yields, before taxes. Model GMMF · Model VOO
Next payments
| Ex-date | Pay date | Per share | Status |
|---|---|---|---|
| GMMF Sep 9, 2026 | Sep 23, 2026 | $0.065 | Est. |
| GMMF Sep 16, 2026 | Sep 30, 2026 | $0.065 | Est. |
| GMMF Sep 23, 2026 | Oct 7, 2026 | $0.065 | Est. |
| VOO Sep 25, 2026 | Oct 9, 2026 | $1.962 | Est. |
| VOO Dec 25, 2026 | Jan 8, 2027 | $1.962 | Est. |
| VOO Mar 26, 2027 | Apr 9, 2027 | $1.962 | Est. |
Annual payouts per share
GMMFVOO
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, GMMF or VOO?
GMMF currently has the higher trailing yield: GMMF yields 3.52% and VOO yields 1.04%. Yield changes daily with price, so check the live figures above.
How often do GMMF and VOO pay?
GMMF pays every week and VOO pays every quarter. GMMF's next ex-date is Sep 9, 2026 and VOO's is Sep 25, 2026.
Is GMMF or VOO better for income?
It depends on what you are optimising for. GMMF and VOO 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.