GMOC vs SPY
GMO Ultra-Short Income ETF vs State Street SPDR S&P 500 ETF Trust
Which is better, GMOC or SPY?
Ultrashort Term Bond against Large Cap Blend.
SPY has a lower expense ratio. SPY led over 1Y and the full window.
MarketXLS is not an investment adviser. This comparison is generated automatically from market data and is for information only. A Best mark means the better reading on that one measure, not a recommendation to buy.
Side-by-Side Comparison
| Metric | GMOC | SPY |
|---|---|---|
| Expense Ratio | 0.20% | 0.09%Best |
| AUM | $34M | $823.2B |
| Dividend Yield | 4.03% | 0.99% |
| Holdings | 116 | 1,515 |
| YTD Return | +3.00% | +11.48%Best |
| 1Y Return | +3.89% | +12.36%Best |
| 3Y Return (annualized) | - | +23.30% |
| 5Y Return (annualized) | - | +11.94% |
| Volatility (annualized) | 0.3%Best | 13.3% |
| Max Drawdown | -0.3%Best | -8.9% |
| $10,000 over 1 years | $10,379 | $11,112Best |
| Fund Family | GMO | State Street Investment Management |
| Category | Fixed Income | Equity |
| Style | Ultrashort Term Bond | Large Cap Blend |
| Inception | Oct 27, 2025 | Jan 22, 1993 |
Not shown on this pair: Top 10 Weight.
Volatility and max drawdown, and the $10,000 over 1 years row, are measured over the window both funds cover: Oct 28, 2025 to Oct 30, 2026 (1 years).
GMOC vs SPY growth
Month-end closes. Both lines start at 0% in the first month shown, so the gap between them is the difference in growth across that window. The full view covers the 1 years both funds cover.
GMOC vs SPY Performance
GMO Ultra-Short Income ETF (GMOC) is an ETF from GMO and State Street SPDR S&P 500 ETF Trust (SPY) is an ETF from State Street Investment Management. Over the past year GMOC returned +3.89% while SPY returned +12.36%. Year to date, GMOC is up 3.00% versus a gain of 11.48% for SPY.
Past performance does not guarantee future results.
Risk: Volatility and Drawdowns
SPY has been the more volatile fund, with annualized monthly volatility of 13.3% compared with 0.3% for GMOC. Lower volatility generally means a smoother ride, though it often comes with lower long-run returns.
The deepest peak-to-trough decline in our data was -0.3% for GMOC and -8.9% for SPY. Drawdown depth is what each fund did in the worst stretch of the window measured above.
The two funds' monthly returns correlate at 0.25. They move largely independently of each other.
Fees and Cost Over Time
GMOC charges 0.20% per year while SPY charges 0.09%. On a $10,000 position that is $20 vs $9 annually, a gap of $11 per year that compounds over a long holding period. On income, GMOC currently yields 4.03% against 0.99% for SPY.
Holdings Overlap
We hold position weights for 17 holdings in GMOC and 504 in SPY, totalling 21.6% and 99.8% of the two funds. The two books name no position in common, so there is no overlap percentage to show.
0 positions in common, counted across the 17 positions we hold weights for in GMOC and 504 in SPY, against full books of 116 and 1,515.
You are not choosing between two funds in isolation.
Whichever of GMOC and SPY you pick has to sit alongside everything else you own. Add the rest and see what the combination actually holds.
Free for up to 10 holdings. No account needed.
Frequently Asked Questions
Which is cheaper, GMOC or SPY?
GMOC has an expense ratio of 0.20% while SPY charges 0.09%. SPY is the cheaper option, by $11 a year on a $10,000 investment.
Which performed better, GMOC or SPY?
Over the past year GMOC returned +3.89% vs +12.36% for SPY, so SPY leads on 1-year performance. Over the longest common window we track (1 years), GMOC annualized +3.79% vs +11.12% for SPY. Past performance does not guarantee future results. This is information, not a recommendation.
Which is riskier, GMOC or SPY?
SPY has been the more volatile fund at 13.3% annualized versus 0.3% for GMOC. Worst drawdown: GMOC -0.3% vs SPY -8.9%.
Should I hold both GMOC and SPY?
GMOC and SPY have a monthly-return correlation of 0.25, so their returns are far enough apart for the mix to behave differently from either one alone. This is information, not a recommendation.
Which pays a higher dividend, GMOC or SPY?
GMOC yields 4.03% while SPY yields 0.99%, so GMOC currently pays the higher dividend yield.
Is SPY better than GMOC?
SPY has a lower expense ratio. SPY led over 1Y and the full window. Which one suits a particular account depends on what it is for. This is information, not a recommendation.