FNDX vs. CAOS
FNDX (Schwab Fundamental U.S. Large Company Index ETF) and CAOS (Alpha Architect Tail Risk ETF) are both exchange-traded funds - FNDX is a Large Cap Value Equities fund tracking the RAFI Fundamental High Liquidity US Large Index, while CAOS is a Options Trading fund actively managed by Alpha Architect. FNDX is passively managed, while CAOS is actively managed. Over the past 3 years, FNDX returned 19.81%/yr vs 3.60%/yr for CAOS. At a 0.08 correlation, their price movements are largely independent. FNDX charges 0.25%/yr vs 0.63%/yr for CAOS.
Performance
FNDX vs. CAOS - Performance Comparison
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Returns By Period
In the year-to-date period, FNDX achieves a 17.12% return, which is significantly higher than CAOS's 0.80% return.
FNDX
- 1D
- 0.44%
- 1M
- 1.31%
- 6M
- 12.69%
- YTD
- 17.12%
- 1Y
- 30.30%
- 3Y*
- 19.81%
- 5Y*
- 14.07%
- 10Y*
- 14.07%
CAOS
- 1D
- -0.04%
- 1M
- 0.13%
- 6M
- 0.30%
- YTD
- 0.80%
- 1Y
- 1.82%
- 3Y*
- 3.60%
- 5Y*
- —
- 10Y*
- —
FNDX vs. CAOS - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | |
|---|---|---|---|---|
FNDX Schwab Fundamental U.S. Large Company Index ETF | 17.12% | 16.94% | 16.77% | 13.05% |
CAOS Alpha Architect Tail Risk ETF | 0.80% | 2.55% | 5.33% | 7.43% |
Correlation
The correlation between FNDX and CAOS is -0.28, meaning they tend to move in opposite directions. This is especially valuable for risk management - when one declines, the other has historically tended to hold steady or rise.
| Correlation | |
|---|---|
Correlation (1Y) Calculated over the trailing 1-year period | -0.28 |
Correlation (3Y) Calculated over the trailing 3-year period | -0.06 |
Correlation (All Time) Calculated using the full available price history since Mar 6, 2023 | 0.08 |
The correlation between FNDX and CAOS shifts across timeframes, from -0.28 (1 year) to 0.08 (all time), reflecting how their relationship changes across market environments.
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Return for Risk
FNDX vs. CAOS — Risk / Return Rank
FNDX
CAOS
FNDX vs. CAOS - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for Schwab Fundamental U.S. Large Company Index ETF (FNDX) and Alpha Architect Tail Risk ETF (CAOS). 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.
| FNDX | CAOS | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | +1.79 | ||
| Sortino ratioReturn per unit of downside risk | +2.26 | ||
| Omega ratioGain probability vs. loss probability | 1.55 | 1.24 | +0.31 |
| Calmar ratioReturn relative to maximum drawdown | 5.02 | 2.41 | +2.61 |
| Martin ratioReturn relative to average drawdown | 19.47 | 5.44 | +14.04 |
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Drawdowns
FNDX vs. CAOS - Drawdown Comparison
The maximum FNDX drawdown since its inception was -37.72%, which is greater than CAOS's maximum drawdown of -3.89%. Use the drawdown chart below to compare losses from any high point for FNDX and CAOS.
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Drawdown Indicators
| FNDX | CAOS | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -37.72% | -3.89% | -33.83% |
Max Drawdown (1Y)Largest decline over 1 year | -6.06% | -0.76% | -5.30% |
Max Drawdown (3Y)Largest decline over 3 years | -16.30% | -3.60% | -12.70% |
Max Drawdown (5Y)Largest decline over 5 years | -19.06% | — | — |
Max Drawdown (10Y)Largest decline over 10 years | -37.72% | — | — |
Current DrawdownCurrent decline from peak | 0.00% | -1.08% | +1.08% |
Average DrawdownAverage peak-to-trough decline | -3.53% | -0.92% | -2.61% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 1.56% | 0.34% | +1.22% |
Volatility
FNDX vs. CAOS - Volatility Comparison
Schwab Fundamental U.S. Large Company Index ETF (FNDX) has a higher volatility of 2.05% compared to Alpha Architect Tail Risk ETF (CAOS) at 0.48%. This indicates that FNDX's price experiences larger fluctuations and is considered to be riskier than CAOS based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| FNDX | CAOS | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 2.05% | 0.48% | +1.57% |
Volatility (6M)Calculated over the trailing 6-month period | 7.41% | 1.09% | +6.32% |
Volatility (1Y)Calculated over the trailing 1-year period | 10.23% | 1.55% | +8.68% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 15.13% | 4.20% | +10.93% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 17.43% | 4.20% | +13.23% |
FNDX vs. CAOS - Expense Ratio Comparison
FNDX has a 0.25% expense ratio, which is lower than CAOS's 0.63% expense ratio.
Dividends
FNDX vs. CAOS - Dividend Comparison
FNDX's dividend yield for the trailing twelve months is around 1.46%, while CAOS has not paid dividends to shareholders.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
CAOS Alpha Architect Tail Risk ETF | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% |
FNDX Schwab Fundamental U.S. Large Company Index ETF | 1.46% | 1.63% | 1.76% | 1.82% | 2.07% | 1.64% | 2.29% | 2.23% | 2.40% | 1.86% | 2.01% | 2.01% |
Frequently Asked Questions
FNDX and CAOS have a correlation of -0.28, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
FNDX has higher volatility (2.05%) compared to CAOS (0.48%). In terms of maximum drawdown, FNDX dropped -37.72% vs CAOS's -3.89%.
On 3-year performance, FNDX leads with 19.81% vs 3.60% for CAOS. On fees, FNDX is cheaper at 0.25% per year. On volatility, CAOS has been the lower-risk option at 0.48%. The better choice depends on whether you care most about return, fees, risk, or income.
Over the 3-year period, FNDX has performed better with a 19.81% return vs 3.60%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.
FNDX is cheaper with a 0.25% expense ratio, compared with 0.63% for CAOS.
FNDX has the higher dividend yield at 1.46%, compared with 0.00% for CAOS.
FNDX is categorized as Large Cap Value Equities, while CAOS is Options Trading. They also come from different issuers: Charles Schwab and Alpha Architect. Their fees differ too: 0.25% for FNDX and 0.63% for CAOS.
FNDX currently has the higher Sharpe Ratio (2.97 vs 1.19), 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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