SRDAX vs. RMDFX

Last updated Jun 4, 2026

SRDAX (Stone Ridge Diversified Alternatives Fund) and RMDFX (Aspiriant Defensive Allocation Fund) are both Multistrategy funds. Over the past 5 years, SRDAX returned 8.28%/yr vs 5.28%/yr for RMDFX. At a correlation of -0.13, they often move in opposite directions. SRDAX charges 1.27%/yr vs 0.18%/yr for RMDFX.

Performance

SRDAX vs. RMDFX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Stone Ridge Diversified Alternatives Fund (SRDAX) and Aspiriant Defensive Allocation Fund (RMDFX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, SRDAX achieves a 5.17% return, which is significantly lower than RMDFX's 7.32% return.

SRDAX

• 1D: 0.39%
• 1M: 1.27%
• YTD: 5.17%
• 6M: 4.97%
• 1Y: 10.42%
• 3Y*: 7.93%
• 5Y*: 8.28%
• 10Y*: —

RMDFX

• 1D: 0.24%
• 1M: 2.08%
• YTD: 7.32%
• 6M: 8.74%
• 1Y: 19.98%
• 3Y*: 11.18%
• 5Y*: 5.28%
• 10Y*: 5.40%

*Multi-year figures are annualized to reflect compound growth (CAGR)

SRDAX vs. RMDFX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020
SRDAX Stone Ridge Diversified Alternatives Fund	5.17%	0.37%	8.46%	19.56%	2.03%	10.62%	1.97%
RMDFX Aspiriant Defensive Allocation Fund	7.32%	18.85%	1.45%	8.01%	-6.84%	4.20%	4.90%

Correlation

The correlation between SRDAX and RMDFX is -0.32, 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	-0.32
Correlation (3Y) Calculated over the trailing 3-year period	-0.20
Correlation (5Y) Calculated over the trailing 5-year period	-0.14
Correlation (All Time) Calculated using the full available price history since Oct 19, 2020	-0.13

The correlation between SRDAX and RMDFX shifts across timeframes, from -0.32 (1 year) to -0.13 (all time), reflecting how their relationship changes across market environments.

Return for Risk

SRDAX vs. RMDFX — Risk / Return Rank

Compare risk-adjusted metric ranks to identify better-performing investments over the past 12 months.

SRDAX

SRDAX Risk / Return Rank: 89
SRDAX Sharpe Ratio Rank: 94
SRDAX Sortino Ratio Rank: 94
SRDAX Omega Ratio Rank: 92
SRDAX Calmar Ratio Rank: 85
SRDAX Martin Ratio Rank: 83

RMDFX

RMDFX Risk / Return Rank: 95
RMDFX Sharpe Ratio Rank: 99
RMDFX Sortino Ratio Rank: 98
RMDFX Omega Ratio Rank: 97
RMDFX Calmar Ratio Rank: 91
RMDFX Martin Ratio Rank: 91

The rank (0–100) shows how this investment's returns compare to the risk taken. Higher = better. Based on the past 12 months of data, combining Sharpe, Sortino, and other metrics used by quantitative funds and institutional investors.

SRDAX vs. RMDFX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Stone Ridge Diversified Alternatives Fund (SRDAX) and Aspiriant Defensive Allocation Fund (RMDFX). 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.

	SRDAX	RMDFX	Difference
Sharpe ratio: Return per unit of total volatility	3.30	4.33	-1.03
Sortino ratio: Return per unit of downside risk	4.76	6.13	-1.37
Omega ratio: Gain probability vs. loss probability	1.67	1.97	-0.29
Calmar ratio: Return relative to maximum drawdown	4.00	4.79	-0.80
Martin ratio: Return relative to average drawdown	15.69	18.77	-3.08
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

SRDAX vs. RMDFX - Sharpe Ratio Comparison

The current SRDAX Sharpe Ratio is 3.30, which is comparable to the RMDFX Sharpe Ratio of 4.33. The chart below compares the historical Sharpe Ratios of SRDAX and RMDFX, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Sharpe Ratios by Period

	SRDAX	RMDFX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	3.30	4.33	-1.03
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	1.19	0.84	+0.35
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	—	0.87	—
Sharpe Ratio (All Time) Calculated using the full available price history	1.25	0.84	+0.41

Drawdowns

SRDAX vs. RMDFX - Drawdown Comparison

The maximum SRDAX drawdown since its inception was -11.90%, smaller than the maximum RMDFX drawdown of -15.96%. Use the drawdown chart below to compare losses from any high point for SRDAX and RMDFX.

Drawdown Indicators

	SRDAX	RMDFX	Difference
Max Drawdown Largest peak-to-trough decline	-11.90%	-15.96%	+4.06%
Max Drawdown (1Y) Largest decline over 1 year	-2.67%	-4.19%	+1.52%
Max Drawdown (3Y) Largest decline over 3 years	-6.15%	-5.79%	-0.36%
Max Drawdown (5Y) Largest decline over 5 years	-11.90%	-14.63%	+2.73%
Max Drawdown (10Y) Largest decline over 10 years	—	-15.96%	—
Current Drawdown Current decline from peak	0.00%	0.00%	0.00%
Average Drawdown Average peak-to-trough decline	-2.34%	-3.33%	+0.99%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.68%	1.07%	-0.39%

Volatility

SRDAX vs. RMDFX - Volatility Comparison

The current volatility for Stone Ridge Diversified Alternatives Fund (SRDAX) is 0.92%, while Aspiriant Defensive Allocation Fund (RMDFX) has a volatility of 1.47%. This indicates that SRDAX experiences smaller price fluctuations and is considered to be less risky than RMDFX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	SRDAX	RMDFX	Difference
Volatility (1M) Calculated over the trailing 1-month period	0.92%	1.47%	-0.55%
Volatility (6M) Calculated over the trailing 6-month period	2.48%	3.96%	-1.48%
Volatility (1Y) Calculated over the trailing 1-year period	3.25%	4.64%	-1.39%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	6.99%	6.34%	+0.65%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	6.79%	6.23%	+0.56%

SRDAX vs. RMDFX - Expense Ratio Comparison

SRDAX has a 1.27% expense ratio, which is higher than RMDFX's 0.18% expense ratio.

Dividends

SRDAX vs. RMDFX - Dividend Comparison

SRDAX's dividend yield for the trailing twelve months is around 8.11%, more than RMDFX's 4.32% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016
RMDFX Aspiriant Defensive Allocation Fund	4.32%	4.63%	0.00%	3.69%	0.78%	5.37%	2.28%	3.78%	4.11%	2.16%	1.16%
SRDAX Stone Ridge Diversified Alternatives Fund	8.11%	8.53%	8.16%	14.97%	3.22%	8.99%	3.07%	0.00%	0.00%	0.00%	0.00%

Frequently Asked Questions

Can I hold both SRDAX and RMDFX in my portfolio?

SRDAX and RMDFX have a correlation of -0.32, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, SRDAX or RMDFX?

RMDFX has higher volatility (1.47%) compared to SRDAX (0.92%). In terms of maximum drawdown, SRDAX dropped -11.90% vs RMDFX's -15.96%.

Which has better risk-adjusted returns?

RMDFX currently has the higher Sharpe Ratio (4.33 vs 3.30), 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.