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FUMBX vs. FIBUX
Performance
Risk-Adjusted Performance
Dividends
Drawdowns
Volatility

Correlation

The correlation between FUMBX and FIBUX 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.


-0.50.00.51.00.8

Performance

FUMBX vs. FIBUX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Fidelity Short-Term Treasury Bond Index Fund (FUMBX) and Fidelity Flex U.S. Bond Index Fund (FIBUX). The values are adjusted to include any dividend payments, if applicable.

0.00%1.00%2.00%3.00%4.00%5.00%AugustSeptemberOctoberNovemberDecember2025
1.98%
1.07%
FUMBX
FIBUX

Key characteristics

Sharpe Ratio

FUMBX:

1.55

FIBUX:

0.58

Sortino Ratio

FUMBX:

2.33

FIBUX:

0.86

Omega Ratio

FUMBX:

1.31

FIBUX:

1.10

Calmar Ratio

FUMBX:

1.14

FIBUX:

0.25

Martin Ratio

FUMBX:

5.01

FIBUX:

1.53

Ulcer Index

FUMBX:

0.81%

FIBUX:

2.13%

Daily Std Dev

FUMBX:

2.60%

FIBUX:

5.56%

Max Drawdown

FUMBX:

-8.92%

FIBUX:

-19.21%

Current Drawdown

FUMBX:

-0.97%

FIBUX:

-8.64%

Returns By Period


FUMBX

YTD

0.00%

1M

0.40%

6M

1.98%

1Y

4.05%

5Y*

1.04%

10Y*

N/A

FIBUX

YTD

-0.11%

1M

-0.12%

6M

1.07%

1Y

3.26%

5Y*

-0.31%

10Y*

N/A

*Annualized

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FUMBX vs. FIBUX - Expense Ratio Comparison

FUMBX has a 0.03% expense ratio, which is higher than FIBUX's 0.00% expense ratio. However, both funds are considered low-cost compared to the broader market, where average expense ratios usually range from 0.3% to 0.9%.


FUMBX
Fidelity Short-Term Treasury Bond Index Fund
Expense ratio chart for FUMBX: current value at 0.03% compared with the broader market ranging from 0.00% to 2.12%.0.50%1.00%1.50%2.00%0.03%
Expense ratio chart for FIBUX: current value at 0.00% compared with the broader market ranging from 0.00% to 2.12%.0.50%1.00%1.50%2.00%0.00%

Risk-Adjusted Performance

FUMBX vs. FIBUX — Risk-Adjusted Performance Rank

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

FUMBX
The Risk-Adjusted Performance Rank of FUMBX is 7474
Overall Rank
The Sharpe Ratio Rank of FUMBX is 7777
Sharpe Ratio Rank
The Sortino Ratio Rank of FUMBX is 8181
Sortino Ratio Rank
The Omega Ratio Rank of FUMBX is 8080
Omega Ratio Rank
The Calmar Ratio Rank of FUMBX is 7171
Calmar Ratio Rank
The Martin Ratio Rank of FUMBX is 5959
Martin Ratio Rank

FIBUX
The Risk-Adjusted Performance Rank of FIBUX is 2525
Overall Rank
The Sharpe Ratio Rank of FIBUX is 2828
Sharpe Ratio Rank
The Sortino Ratio Rank of FIBUX is 2929
Sortino Ratio Rank
The Omega Ratio Rank of FIBUX is 2525
Omega Ratio Rank
The Calmar Ratio Rank of FIBUX is 2222
Calmar Ratio Rank
The Martin Ratio Rank of FIBUX is 2323
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.

FUMBX vs. FIBUX - Risk-Adjusted Performance Comparison

This table presents a comparison of risk-adjusted performance metrics for Fidelity Short-Term Treasury Bond Index Fund (FUMBX) and Fidelity Flex U.S. Bond Index Fund (FIBUX). 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 FUMBX, currently valued at 1.55, compared to the broader market-1.000.001.002.003.004.001.550.54
The chart of Sortino ratio for FUMBX, currently valued at 2.33, compared to the broader market0.005.0010.002.330.80
The chart of Omega ratio for FUMBX, currently valued at 1.30, compared to the broader market1.002.003.004.001.311.10
The chart of Calmar ratio for FUMBX, currently valued at 1.14, compared to the broader market0.005.0010.0015.0020.001.140.23
The chart of Martin ratio for FUMBX, currently valued at 5.01, compared to the broader market0.0020.0040.0060.0080.005.011.42
FUMBX
FIBUX

The current FUMBX Sharpe Ratio is 1.55, which is higher than the FIBUX Sharpe Ratio of 0.58. The chart below compares the historical Sharpe Ratios of FUMBX and FIBUX, 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 Ratio0.000.501.001.502.002.503.003.50AugustSeptemberOctoberNovemberDecember2025
1.55
0.54
FUMBX
FIBUX

Dividends

FUMBX vs. FIBUX - Dividend Comparison

FUMBX's dividend yield for the trailing twelve months is around 3.39%, less than FIBUX's 4.26% yield.


TTM20242023202220212020201920182017
FUMBX
Fidelity Short-Term Treasury Bond Index Fund
3.39%3.39%2.03%1.40%0.83%1.31%1.88%1.77%0.35%
FIBUX
Fidelity Flex U.S. Bond Index Fund
4.26%4.25%3.41%2.71%1.46%2.05%2.77%2.94%1.77%

Drawdowns

FUMBX vs. FIBUX - Drawdown Comparison

The maximum FUMBX drawdown since its inception was -8.92%, smaller than the maximum FIBUX drawdown of -19.21%. Use the drawdown chart below to compare losses from any high point for FUMBX and FIBUX. For additional features, visit the drawdowns tool.


-10.00%-8.00%-6.00%-4.00%-2.00%0.00%AugustSeptemberOctoberNovemberDecember2025
-0.97%
-8.64%
FUMBX
FIBUX

Volatility

FUMBX vs. FIBUX - Volatility Comparison

The current volatility for Fidelity Short-Term Treasury Bond Index Fund (FUMBX) is 0.70%, while Fidelity Flex U.S. Bond Index Fund (FIBUX) has a volatility of 1.51%. This indicates that FUMBX experiences smaller price fluctuations and is considered to be less risky than FIBUX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.


0.50%1.00%1.50%2.00%AugustSeptemberOctoberNovemberDecember2025
0.70%
1.51%
FUMBX
FIBUX
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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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