CPST vs VOO
Calamos S&P 500 Structured Alt Protection ETF - September vs Vanguard S&P 500 ETF
Quick Verdict
VOO has a lower expense ratio. VOO delivered stronger 1-year returns. VOO offers more diversification with 505 holdings.
Side-by-Side Comparison
| Metric | CPST | VOO | Winner |
|---|---|---|---|
| Expense Ratio | 0.69% | 0.03% | |
| AUM | $32M | $979.0B | |
| Dividend Yield | 0.00% | 1.09% | |
| Holdings | 5 | 509 | |
| YTD Return | +3.62% | +13.72% | |
| 1Y Return | +5.94% | +21.63% | |
| 3Y Return (annualized) | - | +21.55% | |
| 5Y Return (annualized) | - | +13.26% | |
| Volatility (annualized) | 2.5% | 14.1% | |
| Max Drawdown | -3.8% | -34.3% | |
| Fund Family | Calamos Investments | Vanguard (US) | |
| Category | Alternative | Equity | |
| Inception | Sep 3, 2024 | Sep 7, 2010 |
CPST vs VOO Performance
Calamos S&P 500 Structured Alt Protection ETF - September (CPST) is a ETF from Calamos Investments and Vanguard S&P 500 ETF (VOO) is a ETF from Vanguard (US). Over the past year CPST returned +5.94% while VOO returned +21.63%. Year to date, CPST is up 3.62% versus a gain of 13.72% for VOO.
Risk: Volatility and Drawdowns
VOO has been the more volatile fund, with annualized monthly volatility of 14.1% compared with 2.5% for CPST. 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 -3.8% for CPST and -34.3% for VOO. 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 0.91. They move almost in lockstep, so holding both mostly duplicates the same exposure.
Fees and Cost Over Time
CPST charges 0.69% per year while VOO charges 0.03%. On a $10,000 position that is $69 vs $3 annually, a gap of $66 per year that compounds over a long holding period. On income, CPST currently yields 0.00% against 1.09% for VOO.
Holdings Overlap
CPST and VOO share 0 holdings out of 506 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, CPST or VOO?
CPST has an expense ratio of 0.69% while VOO charges 0.03%. VOO is the cheaper option. On a $10,000 investment, that is $66 per year of difference.
Which performed better, CPST or VOO?
Over the past year CPST returned +5.94% vs +21.63% for VOO, so VOO leads on 1-year performance. Over the longest common window we track (2 years), CPST annualized +6.61% vs +13.56% for VOO. Past performance does not guarantee future results.
Which is riskier, CPST or VOO?
VOO has been the more volatile fund at 14.1% annualized versus 2.5% for CPST. Worst drawdown: CPST -3.8% vs VOO -34.3%.
Should I hold both CPST and VOO?
CPST and VOO have a monthly-return correlation of 0.91, so they move almost identically. Holding both adds little diversification - most investors pick one, usually on fees or the specific index tracked.
What is the holdings overlap between CPST and VOO?
CPST and VOO share 0 common holdings with a 0.0% weight overlap. Combined, they hold 506 unique securities.
Which pays a higher dividend, CPST or VOO?
CPST yields 0.00% while VOO yields 1.09%, so VOO currently pays the higher dividend yield.
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