TANDX vs. VOO
TANDX (Castle Tandem Fund) and VOO (Vanguard S&P 500 ETF) are both funds - TANDX is a Large Cap Blend Equities fund managed by Castle Investment Management, while VOO is a S&P 500 fund tracking the S&P 500 Index. Over the past 5 years, TANDX returned 1.79%/yr vs 13.22%/yr for VOO. A 0.75 correlation means they provide meaningful diversification when combined. TANDX charges 1.59%/yr vs 0.03%/yr for VOO.
Performance
TANDX vs. VOO - Performance Comparison
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Returns By Period
In the year-to-date period, TANDX achieves a -10.14% return, which is significantly lower than VOO's 11.31% return.
TANDX
- 1D
- 0.19%
- 1M
- 2.37%
- 6M
- -11.30%
- YTD
- -10.14%
- 1Y
- -12.09%
- 3Y*
- 1.78%
- 5Y*
- 1.79%
- 10Y*
- —
VOO
- 1D
- 0.46%
- 1M
- 2.04%
- 6M
- 9.36%
- YTD
- 11.31%
- 1Y
- 22.48%
- 3Y*
- 21.08%
- 5Y*
- 13.22%
- 10Y*
- 15.29%
TANDX vs. VOO - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | |
|---|---|---|---|---|---|---|---|---|
TANDX Castle Tandem Fund | -10.14% | 3.67% | 7.66% | 8.42% | -7.87% | 19.03% | 13.39% | 12.57% |
VOO Vanguard S&P 500 ETF | 11.31% | 17.82% | 24.98% | 26.32% | -18.17% | 28.79% | 18.32% | 14.83% |
Correlation
The correlation between TANDX and VOO is 0.38, which is low. Their price movements are largely independent, making them effective diversification partners.
| Correlation | |
|---|---|
Correlation (1Y) Calculated over the trailing 1-year period | 0.38 |
Correlation (3Y) Calculated over the trailing 3-year period | 0.55 |
Correlation (5Y) Calculated over the trailing 5-year period | 0.70 |
Correlation (All Time) Calculated using the full available price history since Mar 22, 2019 | 0.75 |
Over the past year, the correlation between TANDX and VOO has dropped to 0.38 - well below their long-term average of 0.75, suggesting their price drivers have been diverging.
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Return for Risk
TANDX vs. VOO — Risk / Return Rank
TANDX
VOO
TANDX vs. VOO - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for Castle Tandem Fund (TANDX) and Vanguard S&P 500 ETF (VOO). Risk-adjusted metrics are performance indicators that assess an investment's returns in relation to its risk, enabling a more accurate comparison of different investment options.
Values are calculated on a 1-year rolling basis and updated daily. Risk-adjusted metrics are more stable over longer periods — use the period switch above to explore them.
| TANDX | VOO | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | -3.05 | ||
| Sortino ratioReturn per unit of downside risk | -4.19 | ||
| Omega ratioGain probability vs. loss probability | 0.80 | 1.32 | -0.52 |
| Calmar ratioReturn relative to maximum drawdown | -0.76 | 2.49 | -3.25 |
| Martin ratioReturn relative to average drawdown | -1.54 | 10.85 | -12.39 |
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Drawdowns
TANDX vs. VOO - Drawdown Comparison
The maximum TANDX drawdown since its inception was -93.98%, which is greater than VOO's maximum drawdown of -33.99%. Use the drawdown chart below to compare losses from any high point for TANDX and VOO.
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Drawdown Indicators
| TANDX | VOO | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -93.98% | -33.99% | -59.99% |
Max Drawdown (1Y)Largest decline over 1 year | -16.88% | -8.90% | -7.98% |
Max Drawdown (3Y)Largest decline over 3 years | -93.98% | -18.69% | -75.29% |
Max Drawdown (5Y)Largest decline over 5 years | -93.98% | -24.52% | -69.46% |
Max Drawdown (10Y)Largest decline over 10 years | — | -33.99% | — |
Current DrawdownCurrent decline from peak | -93.71% | -0.34% | -93.37% |
Average DrawdownAverage peak-to-trough decline | -21.25% | -3.68% | -17.57% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 8.31% | 2.04% | +6.27% |
Volatility
TANDX vs. VOO - Volatility Comparison
Castle Tandem Fund (TANDX) and Vanguard S&P 500 ETF (VOO) have volatilities of 4.27% and 4.42%, respectively, indicating that both stocks experience similar levels of price fluctuations. This suggests that the risk associated with both stocks, as measured by volatility, is nearly the same. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| TANDX | VOO | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 4.27% | 4.42% | -0.15% |
Volatility (6M)Calculated over the trailing 6-month period | 8.06% | 9.94% | -1.88% |
Volatility (1Y)Calculated over the trailing 1-year period | 10.02% | 12.48% | -2.46% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 596.04% | 16.92% | +579.12% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 493.15% | 17.99% | +475.16% |
TANDX vs. VOO - Expense Ratio Comparison
TANDX has a 1.59% expense ratio, which is higher than VOO's 0.03% expense ratio.
Dividends
TANDX vs. VOO - Dividend Comparison
TANDX's dividend yield for the trailing twelve months is around 6.87%, more than VOO's 1.06% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
TANDX Castle Tandem Fund | 6.87% | 6.17% | 3.71% | 2.10% | 1.48% | 4.57% | 0.33% | 0.37% | 0.00% | 0.00% | 0.00% | 0.00% |
VOO Vanguard S&P 500 ETF | 1.06% | 1.13% | 1.24% | 1.46% | 1.69% | 1.25% | 1.54% | 1.88% | 2.06% | 1.78% | 2.02% | 2.10% |
Frequently Asked Questions
TANDX and VOO have a correlation of 0.38, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
VOO has higher volatility (4.42%) compared to TANDX (4.27%). In terms of maximum drawdown, TANDX dropped -93.98% vs VOO's -33.99%.
VOO currently has the higher Sharpe Ratio (1.77 vs -1.28), meaning it's delivered slightly more return per unit of risk over the trailing 12 months. However, this ranking shifts over time - use the Risk/Return Score above for a more comprehensive view that combines Sharpe, Sortino, and other measures used by quantitative funds.
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