RBIL vs SPY
F/m Ultrashort Treasury Inflation-Protected Security (TIPS) ETF vs State Street SPDR S&P 500 ETF Trust
Which is better, RBIL or SPY?
Inflation Protection 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 | RBIL | SPY |
|---|---|---|
| Expense Ratio | 0.17% | 0.09%Best |
| AUM | $153M | $804.7B |
| Dividend Yield | 4.04% | 0.98% |
| Holdings | 6 | 505 |
| YTD Return | +2.64% | +12.09%Best |
| 1Y Return | +3.32% | +16.29%Best |
| 3Y Return (annualized) | - | +21.20% |
| 5Y Return (annualized) | - | +13.37% |
| Volatility (annualized) | 1.0%Best | 13.1% |
| Max Drawdown | -0.6%Best | -16.2% |
| $10,000 over 1.6 years | $10,630 | $13,126Best |
| Top 10 Weight | - | 37.8% |
| Fund Family | US Benchmark Series | State Street Investment Management |
| Category | Fixed Income | Equity |
| Style | Inflation Protection | Large Cap Blend |
| Inception | Feb 24, 2025 | Jan 22, 1993 |
Volatility and max drawdown, and the $10,000 over 1.6 years row, are measured over the window both funds cover: Feb 25, 2025 to Sep 18, 2026 (1.6 years).
RBIL 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 1.6 years both funds cover.
RBIL vs SPY Performance
F/m Ultrashort Treasury Inflation-Protected Security (TIPS) ETF (RBIL) is an ETF from US Benchmark Series and State Street SPDR S&P 500 ETF Trust (SPY) is an ETF from State Street Investment Management. Over the past year RBIL returned +3.32% while SPY returned +16.29%. Year to date, RBIL is up 2.64% versus a gain of 12.09% 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 13.1% compared with 1.0% for RBIL. 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 -0.6% for RBIL and -16.2% 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 -0.27. They move largely independently of each other.
Fees and Cost Over Time
RBIL charges 0.17% per year while SPY charges 0.09%. On a $10,000 position that is $17 vs $9 annually, a gap of $8 per year that compounds over a long holding period. On income, RBIL currently yields 4.04% against 0.98% for SPY.
Holdings Overlap
We hold position weights for 5 holdings in RBIL and 504 in SPY, totalling 99.9% and 99.9% 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 5 positions we hold weights for in RBIL and 504 in SPY, against full books of 6 and 505.
What only one of them owns
Our book lists 497 positions for SPY that do not appear in our book for RBIL (99.3% of the fund), and 5 for RBIL that do not appear in SPY (99.9%).
Some of those will be the same company recorded under a different code in one of the two books, so the real difference in what you would own is no larger than this and may be smaller. We do not name the individual positions here for that reason.
You are not choosing between two funds in isolation.
Whichever of RBIL 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, RBIL or SPY?
RBIL has an expense ratio of 0.17% while SPY charges 0.09%. SPY is the cheaper option, by $8 a year on a $10,000 investment.
Which performed better, RBIL or SPY?
Over the past year RBIL returned +3.32% vs +16.29% for SPY, so SPY leads on 1-year performance. Over the longest common window we track (2 years), RBIL annualized +3.89% vs +18.53% for SPY. Past performance does not guarantee future results. This is information, not a recommendation.
Which is riskier, RBIL or SPY?
SPY has been the more volatile fund at 13.1% annualized versus 1.0% for RBIL. Worst drawdown: RBIL -0.6% vs SPY -16.2%.
Should I hold both RBIL and SPY?
RBIL and SPY have a monthly-return correlation of -0.27, 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, RBIL or SPY?
RBIL yields 4.04% while SPY yields 0.98%, so RBIL currently pays the higher dividend yield.
Is SPY better than RBIL?
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.