IBDT vs SPY
iShares iBonds Dec 2028 Term Corporate ETF vs State Street SPDR S&P 500 ETF Trust
Which is better, IBDT or SPY?
SPY has been ahead.
SPY has a lower expense ratio. SPY led over 1Y, 3Y, 5Y 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 | IBDT | SPY |
|---|---|---|
| Expense Ratio | 0.10% | 0.09%Best |
| AUM | $4.1B | $804.7B |
| Dividend Yield | 4.51% | 0.98% |
| Holdings | 732 | 505 |
| YTD Return | +1.11% | +12.47%Best |
| 1Y Return | +2.40% | +17.51%Best |
| 3Y Return (annualized) | +5.65% | +21.18%Best |
| 5Y Return (annualized) | +1.05% | +12.88%Best |
| Volatility (annualized) | 6.3%Best | 16.9% |
| Max Drawdown | -17.8%Best | -34.1% |
| $10,000 over 5 years | $10,536 | $18,327Best |
| Fund Family | iShares by BlackRock (US) | State Street Investment Management |
| Category | Fixed Income | Equity |
| Style | - | Large Cap Blend |
| Inception | Sep 18, 2018 | Jan 22, 1993 |
Not shown on this pair: Top 10 Weight.
Volatility and max drawdown are measured over the window both funds cover: Sep 20, 2018 to Sep 11, 2026 (8 years).
IBDT 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 8 years both funds cover.
IBDT vs SPY Performance
iShares iBonds Dec 2028 Term Corporate ETF (IBDT) is an ETF from iShares by BlackRock (US) and State Street SPDR S&P 500 ETF Trust (SPY) is an ETF from State Street Investment Management. Over the past year IBDT returned +2.40% while SPY returned +17.51%. Year to date, IBDT is up 1.11% versus a gain of 12.47% for SPY.
Over three years, IBDT compounded at +5.65% per year against +21.18% for SPY; over five years the annualized figures are +1.05% and +12.88% respectively. Across the full 8-year window we track, SPY has the edge at +13.80% annualized vs +2.73%.
Past performance does not guarantee future results.
Risk: Volatility and Drawdowns
SPY has been the more volatile fund, with annualized monthly volatility of 16.9% compared with 6.3% for IBDT. 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 -17.8% for IBDT and -34.1% 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 0.60. They move together some of the time, and apart the rest.
Fees and Cost Over Time
IBDT charges 0.10% per year while SPY charges 0.09%. On a $10,000 position that is $10 vs $9 annually, a gap of $1 per year that compounds over a long holding period. On income, IBDT currently yields 4.51% against 0.98% for SPY.
Holdings Overlap
We hold position weights for 604 holdings in IBDT and 504 in SPY, totalling 84.6% and 100.0% of the two funds. That is not enough of IBDT to divide by, so no overlap percentage is shown here. Within what we can see, 1 positions appear in both.
1 positions in common, counted across the 604 positions we hold weights for in IBDT and 504 in SPY, against full books of 732 and 505.
Top Shared Holdings
| Stock | Weight in IBDT | Weight in SPY | Difference |
|---|---|---|---|
| HUBBHubbell Inc. Class B | 0.09% | 0.04% | 0.05% |
You are not choosing between two funds in isolation.
Whichever of IBDT 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, IBDT or SPY?
IBDT has an expense ratio of 0.10% while SPY charges 0.09%. SPY is the cheaper option, by $1 a year on a $10,000 investment.
Which performed better, IBDT or SPY?
Over the past year IBDT returned +2.40% vs +17.51% for SPY, so SPY leads on 1-year performance. Over the longest common window we track (8 years), IBDT annualized +2.73% vs +13.80% for SPY. Past performance does not guarantee future results. This is information, not a recommendation.
Which is riskier, IBDT or SPY?
SPY has been the more volatile fund at 16.9% annualized versus 6.3% for IBDT. Worst drawdown: IBDT -17.8% vs SPY -34.1%.
Should I hold both IBDT and SPY?
IBDT and SPY have a monthly-return correlation of 0.60, 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, IBDT or SPY?
IBDT yields 4.51% while SPY yields 0.98%, so IBDT currently pays the higher dividend yield.
Is SPY better than IBDT?
SPY has a lower expense ratio. SPY led over 1Y, 3Y, 5Y and the full window. Which one suits a particular account depends on what it is for. This is information, not a recommendation.