Data as of Oct 28, 2026.
CPSY vs VOO: Differences, Returns & Fees
Over the year to Oct 28, 2026, CPSY returned +5.7% to VOO's +13.7%, and VOO charges 0.03% to CPSY's 0.69%.
askIQ about this page
askIQ about CPSY and VOO
Net assets: $29m on Oct 28, 2026 for Calamos S&P 500 Structured Alt Protection ETF - January, and $1.0tn on Sep 30, 2026 for Vanguard S&P 500 ETF.
Pair scorecard
VOO costs 0.66 points a year less; their one-year returns differ by 8.0 points.
| Measure | CPSY | VOO |
|---|---|---|
| Return | ||
| Total return, 1 year | +5.7% | +13.7% |
| Drawdown | ||
| Index fall to the buffer | 11.5% | |
| Fund price fall to the buffer | 4.8% | |
| Benchmark | ||
| What it tracks | SPY | S&P 500 Index |
| The outcome period | ||
| Buffer left, in index points | 100.0% of 100.0% | |
| Days left in the period | 64 | |
| Period ends | Dec 31, 2026 | |
| Cost and size | ||
| Expense ratio | 0.69% | 0.03% |
| Net assets, CPSY as of Oct 28, 2026 and VOO as of Sep 30, 2026 | $29m | $1.0tn |
| Holdings | ||
| Holdings in common | not published | |
| Top ten holdings, share of the fund | 39.1% | |
Risk and return
Jan 10, 2025 to Oct 23, 2026 · 93 weekly returnsEach against its own benchmark: CPSY against SPY, Jan 10, 2025 to Oct 23, 2026; VOO against IVV, Sep 17, 2010 to Oct 23, 2026.
VOO returned more: +33.6% to +11.5%. CPSY swung less: 2.6% to 15.0%. CPSY fell less at its worst: −2.8% to −16.7%.
Full scorecard
19 measures, with how each is measured Open ↓
| Measure | CPSY | VOO | Edge | How it is measured |
|---|---|---|---|---|
| Return | ||||
| Total return | +11.5% | +33.6% | VOO | Price change plus distributions, reinvested. |
| Annualized | +6.3% | +17.6% | VOO | Total return as a yearly rate. |
| Price return | +11.5% | +30.8% | VOO | Price change alone, distributions left out. |
| Risk | ||||
| Volatility | 2.6% | 15.0% | CPSY | Spread of weekly returns, annualized. Lower is steadier. |
| Downside deviation | 1.6% | 9.9% | CPSY | Like volatility, counting only weeks below the Treasury bill rate. |
| Max drawdown | −2.8% | −16.7% | CPSY | Deepest fall from a high to the low after it. |
| Upside capture | 13.5% | 99.8% | Share of its benchmark's rise caught in the weeks it rose. | |
| Downside capture | 14.6% | 99.9% | Share of its benchmark's fall taken in the weeks it fell. Lower is better. | |
| Beta | 0.16 | 1.00 | Not an edge | How far it moves for each 1% its benchmark moves. |
| R squared | 0.89 | 1.00 | Not an edge | Share of its weekly moves its benchmark explains. |
| Risk-adjusted | ||||
| Sharpe | 0.82 | 0.89 | VOO (slight) | Return above Treasury bills per unit of volatility. |
| Sortino | 1.30 | 1.35 | VOO (slight) | Return above Treasury bills per unit of downside deviation. |
| Treynor | 0.132 | 0.134 | Return above Treasury bills per unit of beta. | |
| Calmar | 2.24 | 1.05 | CPSY | Annualized return divided by the max drawdown. |
| Against the benchmark | ||||
| Benchmark | SPY | IVV | The ETF each fund is measured against. | |
| Alpha | 0.0% a year | 0.0% a year | Not significant | Yearly return beyond what its beta to the benchmark predicts. |
| Alpha t-stat | −0.03 | 0.51 | Not an edge | How sure the alpha is. Below 2, it could be chance. |
| Alpha range | −1.3% to +1.3% | −0.1% to +0.2% | Includes zero | The 95% range for the yearly alpha. |
| Information ratio | −0.88 | 0.02 | Return against its benchmark per unit of tracking error. | |
| Tracking error | 12.7% | 0.4% | Not an edge | How far weekly returns stray from the benchmark, annualized. |
Computed by ETFIQ from Tiingo daily prices and ETFIQ's distribution records, 93 weekly returns. Cash rate: the 13-week Treasury bill.
Side by side
CPSY and VOO on the fields both publish, as of Oct 28, 2026. Source: ETFIQ.
CPSY and VOO do different jobs. What does each one do in a portfolio?
- What each follows. CPSY follows SPY and VOO follows S&P 500 Index.
- One-year total return. Over 1 year to Oct 28, 2026 CPSY returned +5.7% and VOO +13.7% with distributions reinvested, a gap of 8.0 points.
- Cost. CPSY charges 0.69% of assets a year and VOO 0.03%, a gap of 0.66 points.
Data as of Oct 28, 2026.
The two-page PDF for this pair is coming. Save the comparison to follow its changes. Free. It needs an email sign-in, once.
SPY had already risen past this fund's cap of +6.4% for the period on Oct 28, 2026, so in index terms there is no more upside to collect.
The fund's price can fall 4.8% from here before the buffer starts absorbing losses, by the issuer's number. In index terms, SPY can fall 11.5% from today's level to the point where the buffer begins. Protection left, in index points: 100.0% of the 100.0% buffer still sits below today's SPY level. 64 days remained on Oct 28, 2026. On Dec 31, 2026 the period ends and a new cap is set.
VOO
VOO tracks the S&P 500. Over the year to Oct 28, 2026 it returned +13.7% with distributions reinvested, against +13.7% for its benchmark, the S&P 500 Index. The prospectus expense ratio is 0.03% a year. By its holdings published by its issuer as of Sep 30, 2026, 100% of the fund by weight is stocks the S&P 500 also holds, across 507 positions, with the top ten at 39.1%.
Questions people ask
- Are CPSY and VOO in the same category?
- CPSY is a buffer ETF and VOO is a stock ETF, so they do different jobs. The table compares what both publish: return, cost and holdings.
- Which returned more over the last year, CPSY or VOO?
- In the year to Oct 28, 2026, with distributions reinvested, CPSY returned +5.7% and VOO +13.7%.
- Which is cheaper, CPSY or VOO?
- VOO is cheaper, by 0.66 percentage points a year. That is about $66 on $10,000 held for a year. Fees come from each fund's prospectus.
Links are sources, not endorsements. A comparison is not a recommendation.
Cite this pageCitation, APA and Markdown
ETFIQ, CPSY against VOO, data as of Oct 28, 2026. https://etfiq.com/compare/any/cpsy-vs-voo
ETFIQ. (Oct 28, 2026). CPSY against VOO. Retrieved from https://etfiq.com/compare/any/cpsy-vs-voo
[CPSY against VOO (ETFIQ, Oct 28, 2026)](https://etfiq.com/compare/any/cpsy-vs-voo)
Free to use with attribution for data ETFIQ computes; issuer data stays under its owner's terms.