DDXX vs SPY
Defined Duration 20 ETF vs State Street SPDR S&P 500 ETF Trust
Which is better, DDXX or SPY?
DDXX has been ahead.
SPY has a lower expense ratio. DDXX led over 1Y.
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 | DDXX | SPY |
|---|---|---|
| Expense Ratio | 0.25% | 0.09%Best |
| AUM | $20M | $777.9B |
| Dividend Yield | 1.96% | 1.00% |
| Holdings | 21 | 1,011 |
| YTD Return | +10.92% | +12.09%Best |
| 1Y Return | +13.17%Best | +12.45% |
| 3Y Return (annualized) | - | +21.45% |
| 5Y Return (annualized) | - | +11.87% |
| Volatility (annualized) | 12.7%Best | 13.3% |
| Top 10 Weight | - | 38.9% |
| Fund Family | Discipline Funds | State Street Investment Management |
| Category | Allocation/Balanced | Equity |
| Style | - | Large Cap Blend |
| Inception | Nov 12, 2025 | Jan 22, 1993 |
Not shown on this pair: Max Drawdown, $10,000 over the window.
DDXX 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 is available from the range buttons; it is not the opening view here because over the whole period one of these two funds moves so much further than the other that its line would sit flat on the axis.
DDXX vs SPY Performance
Defined Duration 20 ETF (DDXX) is an ETF from Discipline Funds and State Street SPDR S&P 500 ETF Trust (SPY) is an ETF from State Street Investment Management. Over the past year DDXX returned +13.17% while SPY returned +12.45%. Year to date, DDXX is up 10.92% 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 13.3% compared with 12.7% for DDXX. Lower volatility generally means a smoother ride, though it often comes with lower long-run returns.
The two funds' monthly returns correlate at 0.81. They usually move together, but the gap leaves some room for diversification.
Fees and Cost Over Time
DDXX charges 0.25% per year while SPY charges 0.09%. On a $10,000 position that is $25 vs $9 annually, a gap of $16 per year that compounds over a long holding period. On income, DDXX currently yields 1.96% against 1.00% for SPY.
Holdings Overlap
We hold position weights for 9 holdings in DDXX and 504 in SPY, totalling 100.0% and 100.1% 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 9 positions we hold weights for in DDXX and 504 in SPY, against full books of 21 and 1,011.
What only one of them owns
Our book lists 499 positions for SPY that do not appear in our book for DDXX (99.7% of the fund), and 9 for DDXX that do not appear in SPY (100.0%).
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 DDXX 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, DDXX or SPY?
DDXX has an expense ratio of 0.25% while SPY charges 0.09%. SPY is the cheaper option, by $16 a year on a $10,000 investment.
Which performed better, DDXX or SPY?
Over the past year DDXX returned +13.17% vs +12.45% for SPY, so DDXX leads on 1-year performance. Past performance does not guarantee future results. This is information, not a recommendation.
Which is riskier, DDXX or SPY?
SPY has been the more volatile fund at 13.3% annualized versus 12.7% for DDXX.
Should I hold both DDXX and SPY?
DDXX and SPY have a monthly-return correlation of 0.81, 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, DDXX or SPY?
DDXX yields 1.96% while SPY yields 1.00%, so DDXX currently pays the higher dividend yield.
Is SPY better than DDXX?
SPY has a lower expense ratio. DDXX led over 1Y. Which one suits a particular account depends on what it is for. This is information, not a recommendation.