KBUF vs SPY
KraneShares 90% KWEB Defined Outcome January 2026 ETF vs State Street SPDR S&P 500 ETF Trust
Which is better, KBUF or SPY?
Option Writing 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 | KBUF | SPY |
|---|---|---|
| Expense Ratio | 0.97% | 0.09%Best |
| AUM | $6M | $804.7B |
| Dividend Yield | 8.85% | 0.98% |
| Holdings | 4 | 505 |
| YTD Return | -18.01% | +12.09%Best |
| 1Y Return | -20.03% | +16.29%Best |
| 3Y Return (annualized) | - | +21.20% |
| 5Y Return (annualized) | - | +13.37% |
| Volatility (annualized) | 13.1% | 12.0%Best |
| Max Drawdown | -21.6% | -18.8%Best |
| $10,000 over 2.6 years | $11,542 | $15,722Best |
| Fund Family | KraneShares | State Street Investment Management |
| Category | Alternative | Equity |
| Style | Option Writing | Large Cap Blend |
| Inception | Feb 8, 2024 | Jan 22, 1993 |
Not shown on this pair: Top 10 Weight.
Volatility and max drawdown, and the $10,000 over 2.6 years row, are measured over the window both funds cover: Feb 8, 2024 to Sep 18, 2026 (2.6 years).
KBUF 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 2.6 years both funds cover.
KBUF vs SPY Performance
KraneShares 90% KWEB Defined Outcome January 2026 ETF (KBUF) is an ETF from KraneShares and State Street SPDR S&P 500 ETF Trust (SPY) is an ETF from State Street Investment Management. Over the past year KBUF returned -20.03% while SPY returned +16.29%. Year to date, KBUF is down 18.01% versus a gain of 12.09% for SPY.
Past performance does not guarantee future results.
Risk: Volatility and Drawdowns
KBUF has been the more volatile fund, with annualized monthly volatility of 13.1% compared with 12.0% for SPY. 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 -21.6% for KBUF and -18.8% 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 0.11. They move largely independently of each other.
Fees and Cost Over Time
KBUF charges 0.97% per year while SPY charges 0.09%. On a $10,000 position that is $97 vs $9 annually, a gap of $88 per year that compounds over a long holding period. On income, KBUF currently yields 8.85% against 0.98% for SPY.
Holdings Overlap
We hold position weights for 1 holding in KBUF and 504 in SPY, totalling 90.4% 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 1 positions we hold weights for in KBUF and 504 in SPY, against full books of 4 and 505.
You are not choosing between two funds in isolation.
Whichever of KBUF 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, KBUF or SPY?
KBUF has an expense ratio of 0.97% while SPY charges 0.09%. SPY is the cheaper option, by $88 a year on a $10,000 investment.
Which performed better, KBUF or SPY?
Over the past year KBUF returned -20.03% vs +16.29% for SPY, so SPY leads on 1-year performance. Past performance does not guarantee future results. This is information, not a recommendation.
Which is riskier, KBUF or SPY?
KBUF has been the more volatile fund at 13.1% annualized versus 12.0% for SPY. Worst drawdown: KBUF -21.6% vs SPY -18.8%.
Should I hold both KBUF and SPY?
KBUF and SPY have a monthly-return correlation of 0.11, 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, KBUF or SPY?
KBUF yields 8.85% while SPY yields 0.98%, so KBUF currently pays the higher dividend yield.
Is SPY better than KBUF?
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.