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CUSIP
31635V216
Issuer
Fidelity
Inception Date
Dec 20, 2005
Min. Investment
$0
Index Tracked
Bloomberg Barclays 1-5 Year U.S. Treasury Index
Distribution Policy
Distributing
Asset Class
Bond

Share Price Chart


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Performance

FUMBX Performance Chart

Fidelity Short-Term Treasury Bond Index Fund (FUMBX) is up 0.2% since the beginning of the year. FUMBX is currently trading at $10 per share. Investors who bought $1,000 worth of FUMBX shares 5 years ago would now be looking at an investment worth $1,067.


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S&P 500 Index

Returns By Period

Fidelity Short-Term Treasury Bond Index Fund (FUMBX) has returned 0.19% so far this year and 3.39% over the past 12 months.


Fidelity Short-Term Treasury Bond Index Fund

1D
0.00%
1M
0.07%
YTD
0.19%
6M
0.46%
1Y
3.39%
3Y*
4.03%
5Y*
1.31%
10Y*

Benchmark (S&P 500 Index)

1D
-0.74%
1M
4.90%
YTD
10.35%
6M
10.28%
1Y
26.52%
3Y*
20.83%
5Y*
12.30%
10Y*
13.66%
*Multi-year figures are annualized to reflect compound growth (CAGR)

FUMBX Monthly Returns History

Based on dividend-adjusted daily data since Oct 19, 2017, FUMBX's average daily return is +0.01%, while the average monthly return is +0.15%. At this rate, an investment would double in approximately 38.5 years.

Historically, 57% of months were positive and 43% were negative. The best month was Mar 2023 with a return of +2.1%, while the worst month was Mar 2022 at -2.0%. The longest winning streak lasted 7 consecutive months, and the longest losing streak was 5 months.

On a daily basis, FUMBX closed higher 33% of trading days. The best single day was Mar 13, 2023 with a return of +1.1%, while the worst single day was Jun 13, 2022 at -0.7%.


JanFebMarAprMayJunJulAugSepOctNovDecTotal
20260.16%0.80%-0.80%0.15%-0.03%-0.10%0.19%
20250.50%0.97%0.61%0.99%-0.45%0.81%-0.15%1.02%0.24%0.34%0.62%0.18%5.83%
20240.25%-0.75%0.36%-0.75%0.86%0.76%1.46%1.05%0.85%-1.07%0.38%-0.15%3.25%
20231.23%-1.30%2.06%0.41%-0.49%-0.78%0.23%0.23%-0.37%0.14%1.46%1.62%4.47%
2022-0.98%-0.52%-1.96%-0.82%0.66%-0.79%0.80%-1.39%-1.80%-0.19%1.14%-0.10%-5.84%
2021-0.18%-0.37%-0.21%0.21%0.07%-0.21%0.44%-0.12%-0.32%-0.50%0.06%-0.24%-1.38%

Benchmark Metrics

Fidelity Short-Term Treasury Bond Index Fund has an annualized alpha of 2.04%, beta of -0.01, and R2 of 0.01 versus S&P 500 Index. Calculated based on daily prices since October 20, 2017.

  • This fund participates in less of S&P 500 Index's moves in both directions, but captures a larger share of gains (4.88%) than losses (0.14%) - typical of diversified or defensive assets.
  • Beta of -0.01 may look defensive, but with R2 of 0.01 this fund is largely uncorrelated with S&P 500 Index - low beta reflects independence, not downside protection. See the Volatility section for a true picture of this fund's risk.
  • R2 of 0.01 means this fund moves largely independently of S&P 500 Index - capture ratios reflect limited market correlation rather than active downside protection. Consider using a more representative benchmark.

Alpha
2.04%
Beta
-0.01
0.01
Upside Capture
4.88%
Downside Capture
0.14%

Expense Ratio

FUMBX has an expense ratio of 0.03%, which is considered low.


Return for Risk

Risk / Return Rank

FUMBX ranks 35 for risk / return — below 35% of mutual funds on our site. The returns aren't fully compensating for the risk involved. This isn't necessarily a dealbreaker, but factor it into your decision — especially if you're risk-averse.


FUMBX Risk / Return Rank: 3535
Overall Rank
FUMBX Sharpe Ratio Rank: 3333
Sharpe Ratio Rank
FUMBX Sortino Ratio Rank: 4040
Sortino Ratio Rank
FUMBX Omega Ratio Rank: 3939
Omega Ratio Rank
FUMBX Calmar Ratio Rank: 3434
Calmar Ratio Rank
FUMBX Martin Ratio Rank: 3131
Martin Ratio Rank
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.

Return / Risk — by metrics

The table below present risk-adjusted performance metrics for Fidelity Short-Term Treasury Bond Index Fund (FUMBX) and compare them to S&P 500 Index.


FUMBXBenchmarkDifference
Sharpe ratioReturn per unit of total volatility

-0.59

Sortino ratioReturn per unit of downside risk

-0.41

Omega ratioGain probability vs. loss probability

1.34

1.41

-0.07

Calmar ratioReturn relative to maximum drawdown

2.22

2.93

-0.71

Martin ratioReturn relative to average drawdown

7.08

13.52

-6.44

Dividends

Dividend History

Fidelity Short-Term Treasury Bond Index Fund provided a 3.76% dividend yield over the last twelve months, with an annual payout of $0.39 per share. The fund has been increasing its distributions for 3 consecutive years.


0.00%1.00%2.00%3.00%4.00%$0.00$0.10$0.20$0.30$0.40201720182019202020212022202320242025
Dividends
Dividend Yield
PeriodTTM202520242023202220212020201920182017
Dividend$0.39$0.36$0.30$0.17$0.09$0.12$0.15$0.20$0.17$0.04

Dividend yield

3.76%3.51%2.91%1.64%0.86%1.15%1.41%1.88%1.64%0.34%

Monthly Dividends

The table displays the monthly dividend distributions for Fidelity Short-Term Treasury Bond Index Fund. The dividends shown in the table have been adjusted to account for any splits that may have occurred.


JanFebMarAprMayJunJulAugSepOctNovDecTotal
2026$0.03$0.02$0.03$0.03$0.03$0.00$0.13
2025$0.02$0.02$0.02$0.02$0.02$0.02$0.02$0.03$0.02$0.03$0.02$0.11$0.36
2024$0.02$0.01$0.02$0.02$0.02$0.02$0.02$0.02$0.02$0.02$0.02$0.11$0.30
2023$0.01$0.01$0.01$0.01$0.01$0.01$0.01$0.01$0.01$0.01$0.01$0.03$0.17
2022$0.01$0.01$0.01$0.01$0.01$0.00$0.00$0.01$0.00$0.01$0.01$0.02$0.09
2021$0.00$0.00$0.01$0.03$0.01$0.01$0.01$0.01$0.01$0.01$0.01$0.04$0.12

Drawdowns

Drawdowns Chart

The Drawdowns chart displays portfolio losses from any high point along the way. Drawdowns are calculated considering price movements and all distributions paid, if any.


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Worst Drawdowns

The table below displays the maximum drawdowns of the Fidelity Short-Term Treasury Bond Index Fund. A maximum drawdown is a measure of risk, indicating the largest reduction in portfolio value due to a series of losing trades.

The maximum drawdown for the Fidelity Short-Term Treasury Bond Index Fund was 8.83%, occurring on Oct 20, 2022. Recovery took 447 trading sessions.

The current Fidelity Short-Term Treasury Bond Index Fund drawdown is 0.77%.


Related event

Drawdown

Fall

Recovery

Underwater

Bear market2022
-8.83%Oct 2022
2y 2mo1y 9mo
3y 12moAug 2020 - Aug 2024
2024 pullback2024
-1.57%Nov 2024
1mo 27d3mo 6d
5mo 3dSep 2024 - Feb 2025
2026 pullback2026
-1.54%Mar 2026
24d
3mo 4dMar 2026 - now
2018 pullback2018
-1.41%May 2018
6mo 9d6mo 19d
1y 23dNov 2017 - Nov 2018
2025 selloff2025
-1.16%May 2025
13d1mo 13d
1mo 26dMay 2025 - Jun 2025

Drawdown Indicators


FUMBXBenchmarkDifference

Max Drawdown

Largest peak-to-trough decline

-8.83%

-56.78%

+47.95%

Max Drawdown (1Y)

Largest decline over 1 year

-1.54%

-9.10%

+7.56%

Max Drawdown (3Y)

Largest decline over 3 years

-1.57%

-18.90%

+17.33%

Max Drawdown (5Y)

Largest decline over 5 years

-8.60%

-25.43%

+16.83%

Max Drawdown (10Y)

Largest decline over 10 years

-33.92%

Current Drawdown

Current decline from peak

-0.77%

-0.74%

-0.03%

Average Drawdown

Average peak-to-trough decline

-1.86%

-10.72%

+8.86%

Ulcer Index

Depth and duration of drawdowns from previous peaks

0.48%

1.97%

-1.49%

Volatility

Volatility Chart

The chart below shows the rolling one-month volatility.


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Portfolio Analyzer

Build a portfolio with FUMBX

Add Fidelity Short-Term Treasury Bond Index Fund to a portfolio and analyze allocations for your target — whether that's maximizing returns, minimizing drawdowns, or balancing risk across holdings.

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