SEMRX vs. FXAIX

Last updated Jun 4, 2026

SEMRX (Semper Short Duration Fund) and FXAIX (Fidelity 500 Index Fund) are both mutual funds - SEMRX is a Ultrashort Bond fund managed by Semper, while FXAIX is a S&P 500 fund tracking the S&P 500 Index. Over the past 10 years, SEMRX returned 3.40%/yr vs 15.66%/yr for FXAIX. At a correlation of -0.03, they often move in opposite directions. SEMRX charges 0.85%/yr vs 0.02%/yr for FXAIX.

Performance

SEMRX vs. FXAIX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Semper Short Duration Fund (SEMRX) and Fidelity 500 Index Fund (FXAIX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, SEMRX achieves a 2.15% return, which is significantly lower than FXAIX's 11.71% return. Over the past 10 years, SEMRX has underperformed FXAIX with an annualized return of 3.40%, while FXAIX has yielded a comparatively higher 15.66% annualized return.

SEMRX

• 1D: 0.00%
• 1M: 0.56%
• YTD: 2.15%
• 6M: 2.54%
• 1Y: 5.95%
• 3Y*: 7.31%
• 5Y*: 4.82%
• 10Y*: 3.40%

FXAIX

• 1D: 0.13%
• 1M: 5.80%
• YTD: 11.71%
• 6M: 11.74%
• 1Y: 28.99%
• 3Y*: 22.75%
• 5Y*: 14.28%
• 10Y*: 15.66%

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

SEMRX vs. FXAIX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
SEMRX Semper Short Duration Fund	2.15%	6.47%	8.21%	8.76%	-1.69%	1.93%	-1.19%	3.48%	2.11%	2.74%
FXAIX Fidelity 500 Index Fund	11.71%	17.84%	25.01%	26.29%	-18.14%	28.71%	18.42%	31.48%	-4.43%	21.82%

Correlation

The correlation between SEMRX and FXAIX is 0.04, meaning there is essentially no relationship between their price movements. Each responds to its own set of market drivers, making them strong candidates for combining in a diversified portfolio.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.04
Correlation (3Y) Calculated over the trailing 3-year period	0.05
Correlation (5Y) Calculated over the trailing 5-year period	0.04
Correlation (10Y) Calculated over the trailing 10-year period	-0.00
Correlation (All Time) Calculated using the full available price history since May 5, 2011	-0.03

Return for Risk

SEMRX vs. FXAIX — Risk / Return Rank

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

SEMRX

SEMRX Risk / Return Rank: 98
SEMRX Sharpe Ratio Rank: 93
SEMRX Sortino Ratio Rank: 99
SEMRX Omega Ratio Rank: 99
SEMRX Calmar Ratio Rank: 99
SEMRX Martin Ratio Rank: 99

FXAIX

FXAIX Risk / Return Rank: 73
FXAIX Sharpe Ratio Rank: 76
FXAIX Sortino Ratio Rank: 67
FXAIX Omega Ratio Rank: 67
FXAIX Calmar Ratio Rank: 74
FXAIX Martin Ratio Rank: 83

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.

SEMRX vs. FXAIX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Semper Short Duration Fund (SEMRX) and Fidelity 500 Index Fund (FXAIX). 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.

	SEMRX	FXAIX	Difference
Sharpe ratio: Return per unit of total volatility	3.19	2.52	+0.67
Sortino ratio: Return per unit of downside risk	10.68	3.42	+7.26
Omega ratio: Gain probability vs. loss probability	3.05	1.46	+1.59
Calmar ratio: Return relative to maximum drawdown	11.44	3.36	+8.08
Martin ratio: Return relative to average drawdown	47.40	15.70	+31.70
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

SEMRX vs. FXAIX - Sharpe Ratio Comparison

The current SEMRX Sharpe Ratio is 3.19, which is comparable to the FXAIX Sharpe Ratio of 2.52. The chart below compares the historical Sharpe Ratios of SEMRX and FXAIX, 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

	SEMRX	FXAIX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	3.19	2.52	+0.67
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	2.64	0.85	+1.79
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	1.48	0.87	+0.61
Sharpe Ratio (All Time) Calculated using the full available price history	1.27	0.82	+0.44

Drawdowns

SEMRX vs. FXAIX - Drawdown Comparison

The maximum SEMRX drawdown since its inception was -13.09%, smaller than the maximum FXAIX drawdown of -33.79%. Use the drawdown chart below to compare losses from any high point for SEMRX and FXAIX.

Drawdown Indicators

	SEMRX	FXAIX	Difference
Max Drawdown Largest peak-to-trough decline	-13.09%	-33.79%	+20.70%
Max Drawdown (1Y) Largest decline over 1 year	-0.52%	-8.89%	+8.37%
Max Drawdown (3Y) Largest decline over 3 years	-0.63%	-18.76%	+18.13%
Max Drawdown (5Y) Largest decline over 5 years	-4.05%	-24.50%	+20.45%
Max Drawdown (10Y) Largest decline over 10 years	-13.09%	-33.79%	+20.70%
Current Drawdown Current decline from peak	0.00%	0.00%	0.00%
Average Drawdown Average peak-to-trough decline	-0.63%	-3.79%	+3.16%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.13%	1.90%	-1.77%

Volatility

SEMRX vs. FXAIX - Volatility Comparison

The current volatility for Semper Short Duration Fund (SEMRX) is 0.48%, while Fidelity 500 Index Fund (FXAIX) has a volatility of 2.83%. This indicates that SEMRX experiences smaller price fluctuations and is considered to be less risky than FXAIX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	SEMRX	FXAIX	Difference
Volatility (1M) Calculated over the trailing 1-month period	0.48%	2.83%	-2.35%
Volatility (6M) Calculated over the trailing 6-month period	1.27%	8.97%	-7.70%
Volatility (1Y) Calculated over the trailing 1-year period	1.87%	11.86%	-9.99%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	1.83%	16.91%	-15.08%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	2.31%	18.07%	-15.76%

SEMRX vs. FXAIX - Expense Ratio Comparison

SEMRX has a 0.85% expense ratio, which is higher than FXAIX's 0.02% expense ratio.

Dividends

SEMRX vs. FXAIX - Dividend Comparison

SEMRX's dividend yield for the trailing twelve months is around 5.67%, more than FXAIX's 1.03% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
FXAIX Fidelity 500 Index Fund	1.03%	1.11%	1.25%	1.45%	1.69%	1.22%	1.60%	2.06%	2.72%	1.97%	2.52%	2.83%
SEMRX Semper Short Duration Fund	5.67%	5.94%	6.13%	6.05%	3.22%	1.71%	1.95%	2.90%	2.70%	2.20%	3.03%	2.35%

Frequently Asked Questions

Can I hold both SEMRX and FXAIX in my portfolio?

SEMRX and FXAIX have a correlation of 0.04, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, SEMRX or FXAIX?

FXAIX has higher volatility (2.83%) compared to SEMRX (0.48%). In terms of maximum drawdown, SEMRX dropped -13.09% vs FXAIX's -33.79%.

Which has better risk-adjusted returns?

SEMRX currently has the higher Sharpe Ratio (3.19 vs 2.52), 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.