BUFM vs CPSU
AB Moderate Buffer ETF vs Calamos S&P 500 Structured Alt Protection ETF - June
Which is better, BUFM or CPSU?
BUFM has been ahead.
BUFM 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 | BUFM | CPSU |
|---|---|---|
| Expense Ratio | 0.69%Tie | 0.69%Tie |
| AUM | $492M | $29M |
| Dividend Yield | 0.00% | 0.00% |
| Holdings | 7 | 5 |
| YTD Return | +4.67%Best | +3.38% |
| 1Y Return | +7.70%Best | +4.67% |
| Volatility (annualized) | 5.2% | 1.4%Best |
| Max Drawdown | -4.1% | -1.0%Best |
| $10,000 over 1.4 years | $11,457Best | $10,788 |
| Fund Family | AllianceBernstein L.P. | Calamos Investments |
| Category | Alternative | Alternative |
| Style | Multi Alternative | Multi Alternative |
| Inception | Dec 9, 2024 | Jun 2, 2025 |
Not shown on this pair: 3Y Return (annualized), 5Y Return (annualized), Top 10 Weight.
Volatility and max drawdown, and the $10,000 over 1.4 years row, are measured over the window both funds cover: Jun 2, 2025 to Oct 14, 2026 (1.4 years).
BUFM vs CPSU 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 1.4 years both funds cover.
BUFM vs CPSU Performance
AB Moderate Buffer ETF (BUFM) is an ETF from AllianceBernstein L.P. and Calamos S&P 500 Structured Alt Protection ETF - June (CPSU) is an ETF from Calamos Investments. Over the past year BUFM returned +7.70% while CPSU returned +4.67%. Year to date, BUFM is up 4.67% versus a gain of 3.38% for CPSU.
Past performance does not guarantee future results.
Risk: Volatility and Drawdowns
BUFM has been the more volatile fund, with annualized monthly volatility of 5.2% compared with 1.4% for CPSU. 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 -4.1% for BUFM and -1.0% for CPSU. Drawdown depth is what each fund did in the worst stretch of the window measured above.
The two funds' monthly returns correlate at 0.88. They usually move together, but the gap leaves some room for diversification.
Fees and Cost Over Time
BUFM charges 0.69% per year while CPSU charges 0.69%. On a $10,000 position that is $69 vs $69 annually. On income, BUFM currently yields 0.00% against 0.00% for CPSU.
You are not choosing between two funds in isolation.
Whichever of BUFM and CPSU 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, BUFM or CPSU?
BUFM has an expense ratio of 0.69% while CPSU charges 0.69%. At the precision these are quoted to, they cost the same.
Which performed better, BUFM or CPSU?
Over the past year BUFM returned +7.70% vs +4.67% for CPSU, so BUFM leads on 1-year performance. Over the longest common window we track (1 years), BUFM annualized +10.20% vs +5.57% for CPSU. Past performance does not guarantee future results. This is information, not a recommendation.
Which is riskier, BUFM or CPSU?
BUFM has been the more volatile fund at 5.2% annualized versus 1.4% for CPSU. Worst drawdown: BUFM -4.1% vs CPSU -1.0%.
Should I hold both BUFM and CPSU?
BUFM and CPSU have a monthly-return correlation of 0.88, 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, BUFM or CPSU?
BUFM yields 0.00% while CPSU yields 0.00%, so CPSU currently pays the higher dividend yield.
Is CPSU better than BUFM?
BUFM 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.