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FLXSX vs. FDFIX
Performance
Risk-Adjusted Performance
Dividends
Drawdowns
Volatility

Correlation

The correlation between FLXSX and FDFIX is 0.81, which is considered to be high. That indicates a strong positive relationship between their price movements. Having highly-correlated positions in a portfolio may signal a lack of diversification, potentially leading to increased risk during market downturns.


-0.50.00.51.0
Correlation: 0.8

Performance

FLXSX vs. FDFIX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Fidelity Flex Small Cap Index Fund (FLXSX) and Fidelity Flex 500 Index Fund (FDFIX). The values are adjusted to include any dividend payments, if applicable.

50.00%100.00%150.00%200.00%NovemberDecember2025FebruaryMarchApril
48.51%
160.38%
FLXSX
FDFIX

Key characteristics

Sharpe Ratio

FLXSX:

-0.27

FDFIX:

0.32

Sortino Ratio

FLXSX:

-0.23

FDFIX:

0.58

Omega Ratio

FLXSX:

0.97

FDFIX:

1.08

Calmar Ratio

FLXSX:

-0.23

FDFIX:

0.31

Martin Ratio

FLXSX:

-0.87

FDFIX:

1.58

Ulcer Index

FLXSX:

7.33%

FDFIX:

3.76%

Daily Std Dev

FLXSX:

23.79%

FDFIX:

18.69%

Max Drawdown

FLXSX:

-43.21%

FDFIX:

-33.77%

Current Drawdown

FLXSX:

-21.18%

FDFIX:

-11.31%

Returns By Period

In the year-to-date period, FLXSX achieves a -13.89% return, which is significantly lower than FDFIX's -7.21% return.


FLXSX

YTD

-13.89%

1M

-5.10%

6M

-12.40%

1Y

-6.67%

5Y*

10.18%

10Y*

N/A

FDFIX

YTD

-7.21%

1M

-3.04%

6M

-5.48%

1Y

5.79%

5Y*

16.08%

10Y*

N/A

*Annualized

Compare stocks, funds, or ETFs

Search for stocks, ETFs, and funds for a quick comparison or use the comparison tool for more options.


FLXSX vs. FDFIX - Expense Ratio Comparison

FLXSX has a 0.00% expense ratio, which is lower than FDFIX's 0.00% expense ratio. Despite the difference, both funds are considered low-cost compared to the broader market, where average expense ratios usually range from 0.3% to 0.9%.


FLXSX
Fidelity Flex Small Cap Index Fund
Expense ratio chart for FLXSX: current value is 0.00%, compared with the broader market range of 0.00% to 2.12%.0.50%1.00%1.50%2.00%
FLXSX: 0.00%
Expense ratio chart for FDFIX: current value is 0.00%, compared with the broader market range of 0.00% to 2.12%.0.50%1.00%1.50%2.00%
FDFIX: 0.00%

Risk-Adjusted Performance

FLXSX vs. FDFIX — Risk-Adjusted Performance Rank

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

FLXSX
The Risk-Adjusted Performance Rank of FLXSX is 5050
Overall Rank
The Sharpe Ratio Rank of FLXSX is 4949
Sharpe Ratio Rank
The Sortino Ratio Rank of FLXSX is 5151
Sortino Ratio Rank
The Omega Ratio Rank of FLXSX is 5353
Omega Ratio Rank
The Calmar Ratio Rank of FLXSX is 4545
Calmar Ratio Rank
The Martin Ratio Rank of FLXSX is 5151
Martin Ratio Rank

FDFIX
The Risk-Adjusted Performance Rank of FDFIX is 7878
Overall Rank
The Sharpe Ratio Rank of FDFIX is 7575
Sharpe Ratio Rank
The Sortino Ratio Rank of FDFIX is 7777
Sortino Ratio Rank
The Omega Ratio Rank of FDFIX is 7777
Omega Ratio Rank
The Calmar Ratio Rank of FDFIX is 8181
Calmar Ratio Rank
The Martin Ratio Rank of FDFIX is 7878
Martin Ratio Rank
The risk-adjusted ranks indicate the investment's position relative to the market. A rank closer to 100 signifies top-performing investments, while a rank closer to 0 might suggest underperformance, based on the selected ratio. The values are calculated based on the past 12 months of returns.

FLXSX vs. FDFIX - Risk-Adjusted Performance Comparison

This table presents a comparison of risk-adjusted performance metrics for Fidelity Flex Small Cap Index Fund (FLXSX) and Fidelity Flex 500 Index Fund (FDFIX). 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.


Sharpe ratio
The chart of Sharpe ratio for FLXSX, currently valued at -0.27, compared to the broader market-1.000.001.002.003.00
FLXSX: -0.27
FDFIX: 0.32
The chart of Sortino ratio for FLXSX, currently valued at -0.23, compared to the broader market-2.000.002.004.006.008.00
FLXSX: -0.23
FDFIX: 0.58
The chart of Omega ratio for FLXSX, currently valued at 0.97, compared to the broader market0.501.001.502.002.503.00
FLXSX: 0.97
FDFIX: 1.08
The chart of Calmar ratio for FLXSX, currently valued at -0.23, compared to the broader market0.002.004.006.008.0010.00
FLXSX: -0.23
FDFIX: 0.31
The chart of Martin ratio for FLXSX, currently valued at -0.87, compared to the broader market0.0010.0020.0030.0040.0050.00
FLXSX: -0.87
FDFIX: 1.58

The current FLXSX Sharpe Ratio is -0.27, which is lower than the FDFIX Sharpe Ratio of 0.32. The chart below compares the historical Sharpe Ratios of FLXSX and FDFIX, offering insights into how both investments have performed under varying market conditions. These values are calculated using daily returns over the previous 12 months.


Rolling 12-month Sharpe Ratio-1.000.001.002.003.004.00NovemberDecember2025FebruaryMarchApril
-0.27
0.32
FLXSX
FDFIX

Dividends

FLXSX vs. FDFIX - Dividend Comparison

FLXSX's dividend yield for the trailing twelve months is around 1.58%, more than FDFIX's 1.07% yield.


TTM20242023202220212020201920182017
FLXSX
Fidelity Flex Small Cap Index Fund
1.58%1.36%1.49%1.26%1.10%1.06%1.31%1.16%0.54%
FDFIX
Fidelity Flex 500 Index Fund
1.07%1.26%1.48%1.70%1.18%1.52%1.78%1.81%0.85%

Drawdowns

FLXSX vs. FDFIX - Drawdown Comparison

The maximum FLXSX drawdown since its inception was -43.21%, which is greater than FDFIX's maximum drawdown of -33.77%. Use the drawdown chart below to compare losses from any high point for FLXSX and FDFIX. For additional features, visit the drawdowns tool.


-25.00%-20.00%-15.00%-10.00%-5.00%0.00%NovemberDecember2025FebruaryMarchApril
-21.18%
-11.31%
FLXSX
FDFIX

Volatility

FLXSX vs. FDFIX - Volatility Comparison

Fidelity Flex Small Cap Index Fund (FLXSX) and Fidelity Flex 500 Index Fund (FDFIX) have volatilities of 13.46% and 13.36%, 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.


2.00%4.00%6.00%8.00%10.00%12.00%14.00%NovemberDecember2025FebruaryMarchApril
13.46%
13.36%
FLXSX
FDFIX
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Disclaimer

The information contained herein does not constitute investment advice and made available for educational purposes only. Prices and returns on equities are listed without consideration of fees, commissions, taxes, penalties, or interest payable due to purchasing, holding, or selling.

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