IBGK vs SPY
iShares iBonds Dec 2054 Term Treasury ETF vs State Street SPDR S&P 500 ETF Trust
Quick Verdict
IBGK has a lower expense ratio. SPY delivered stronger 1-year returns. SPY offers more diversification with 505 holdings.
Side-by-Side Comparison
| Metric | IBGK | SPY | Winner |
|---|---|---|---|
| Expense Ratio | 0.07% | 0.09% | |
| AUM | $6M | $821.1B | |
| Dividend Yield | 4.79% | 1.01% | |
| Holdings | 5 | 505 | |
| YTD Return | -3.24% | +12.68% | |
| 1Y Return | -0.69% | +21.82% | |
| 3Y Return (annualized) | - | +21.98% | |
| 5Y Return (annualized) | - | +12.89% | |
| Volatility (annualized) | 10.4% | 15.3% | |
| Max Drawdown | -14.0% | -56.5% | |
| Fund Family | iShares by BlackRock (US) | State Street Investment Management | |
| Category | Fixed Income | Equity | |
| Inception | Jun 11, 2024 | Jan 22, 1993 |
IBGK vs SPY Performance
iShares iBonds Dec 2054 Term Treasury ETF (IBGK) is a ETF from iShares by BlackRock (US) and State Street SPDR S&P 500 ETF Trust (SPY) is a ETF from State Street Investment Management. Over the past year IBGK returned -0.69% while SPY returned +21.82%. Year to date, IBGK is down 3.24% versus a gain of 12.68% for SPY.
Risk: Volatility and Drawdowns
SPY has been the more volatile fund, with annualized monthly volatility of 15.3% compared with 10.4% for IBGK. 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 -14.0% for IBGK and -56.5% for SPY. Drawdown depth is worth weighing if you expect to sell during market stress rather than ride it out.
The two funds' monthly returns correlate at 0.22. They move independently enough that combining them can meaningfully diversify a portfolio.
Fees and Cost Over Time
IBGK charges 0.07% per year while SPY charges 0.09%. On a $10,000 position that is $7 vs $9 annually, a gap of $2 per year that compounds over a long holding period. On income, IBGK currently yields 4.79% against 1.01% for SPY.
Holdings Overlap
IBGK and SPY share 0 holdings out of 509 unique holdings combined, representing a 0.0% weight overlap.
Moderate overlap means holding both could provide meaningful diversification benefits.
Frequently Asked Questions
Which is cheaper, IBGK or SPY?
IBGK has an expense ratio of 0.07% while SPY charges 0.09%. IBGK is the cheaper option. On a $10,000 investment, that is $2 per year of difference.
Which performed better, IBGK or SPY?
Over the past year IBGK returned -0.69% vs +21.82% for SPY, so SPY leads on 1-year performance. Over the longest common window we track (2 years), IBGK annualized -0.70% vs +8.81% for SPY. Past performance does not guarantee future results.
Which is riskier, IBGK or SPY?
SPY has been the more volatile fund at 15.3% annualized versus 10.4% for IBGK. Worst drawdown: IBGK -14.0% vs SPY -56.5%.
Should I hold both IBGK and SPY?
IBGK and SPY have a monthly-return correlation of 0.22, so combining them can provide real diversification depending on your allocation goals.
What is the holdings overlap between IBGK and SPY?
IBGK and SPY share 0 common holdings with a 0.0% weight overlap. Combined, they hold 509 unique securities.
Which pays a higher dividend, IBGK or SPY?
IBGK yields 4.79% while SPY yields 1.01%, so IBGK currently pays the higher dividend yield.
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