IBTF vs VOO
iShares iBonds Dec 2025 Term Treasury ETF vs Vanguard S&P 500 ETF
Which is better, IBTF or VOO?
VOO has been ahead.
VOO has a lower expense ratio. VOO 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 | IBTF | VOO |
|---|---|---|
| Expense Ratio | 0.07% | 0.03%Best |
| AUM | $1.4B | $997.4B |
| Dividend Yield | 3.85% | 1.04% |
| Holdings | 6 | 509 |
| Volatility (annualized) | 2.7%Best | 17.0% |
| Max Drawdown | -20.8%Best | -28.9% |
| $10,000 over 5.8 years | $10,710 | $24,699Best |
| Fund Family | iShares by BlackRock (US) | Vanguard (US) |
| Category | Fixed Income | Equity |
| Style | - | Large Cap Blend |
| Inception | Feb 25, 2020 | Sep 7, 2010 |
Not shown on this pair: YTD Return, 1Y Return, 3Y Return (annualized), 5Y Return (annualized), Top 10 Weight.
The two price series end 282 days apart, so a return over any period would be measuring two different stretches of market. Those rows are withheld. IBTF has data through Dec 15, 2025 and VOO through Sep 23, 2026.
Volatility and max drawdown, and the $10,000 over 5.8 years row, are measured over the window both funds cover: Feb 28, 2020 to Dec 15, 2025 (5.8 years).
Risk: Volatility and Drawdowns
VOO has been the more volatile fund, with annualized monthly volatility of 17.0% compared with 2.7% for IBTF. 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 -20.8% for IBTF and -28.9% for VOO. Drawdown depth is what each fund did in the worst stretch of the window measured above.
The two funds' monthly returns correlate at 0.12. They move largely independently of each other.
Fees and Cost Over Time
IBTF charges 0.07% per year while VOO charges 0.03%. On a $10,000 position that is $7 vs $3 annually, a gap of $4 per year that compounds over a long holding period. On income, IBTF currently yields 3.85% against 1.04% for VOO.
Holdings Overlap
We hold position weights for 4 holdings in IBTF and 494 in VOO, totalling 161.4% and 99.5% of the two funds. The two books name no position in common, so there is no overlap percentage to show.
The two holdings books were reported 245 days apart, IBTF as of Nov 28, 2025 and VOO as of Jul 31, 2026, so some of the difference between them is the time between the two reports rather than the funds.
0 positions in common, counted across the 4 positions we hold weights for in IBTF and 494 in VOO, against full books of 6 and 509.
You are not choosing between two funds in isolation.
Whichever of IBTF and VOO 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, IBTF or VOO?
IBTF has an expense ratio of 0.07% while VOO charges 0.03%. VOO is the cheaper option, by $4 a year on a $10,000 investment.
Which is riskier, IBTF or VOO?
VOO has been the more volatile fund at 17.0% annualized versus 2.7% for IBTF. Worst drawdown: IBTF -20.8% vs VOO -28.9%.
Should I hold both IBTF and VOO?
IBTF and VOO have a monthly-return correlation of 0.12, 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, IBTF or VOO?
IBTF yields 3.85% while VOO yields 1.04%, so IBTF currently pays the higher dividend yield.
Is VOO better than IBTF?
VOO has a lower expense ratio. VOO 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.