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ISIN
US09258N3567
CUSIP
09258N356
Issuer
BlackRock
Inception Date
Dec 17, 2000
Min. Investment
$1,000
Distribution Policy
Distributing
Asset Class
Bond

Share Price Chart


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Performance

BIDAX Performance Chart

iShares Municipal Bond Index Fund (BIDAX) is up 1.2% since the beginning of the year. BIDAX is currently trading at $11 per share. Investors who bought $1,000 worth of BIDAX shares 5 years ago would now be looking at an investment worth $1,033.


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S&P 500 Index

Returns By Period

iShares Municipal Bond Index Fund (BIDAX) has returned 1.22% so far this year and 6.78% over the past 12 months.


iShares Municipal Bond Index Fund

1D
0.00%
1M
0.44%
YTD
1.22%
6M
1.58%
1Y
6.78%
3Y*
3.62%
5Y*
0.66%
10Y*

Benchmark (S&P 500 Index)

1D
0.13%
1M
5.25%
YTD
11.16%
6M
11.43%
1Y
28.20%
3Y*
21.12%
5Y*
12.66%
10Y*
13.75%
*Multi-year figures are annualized to reflect compound growth (CAGR)

BIDAX Monthly Returns History

Based on dividend-adjusted daily data since Nov 16, 2018, BIDAX's average daily return is +0.01%, while the average monthly return is +0.20%. At this rate, an investment would double in approximately 28.9 years.

Historically, 59% of months were positive and 41% were negative. The best month was Nov 2023 with a return of +6.6%, while the worst month was Sep 2022 at -3.8%. The longest winning streak lasted 10 consecutive months, and the longest losing streak was 5 months.

On a daily basis, BIDAX closed higher 37% of trading days. The best single day was Mar 25, 2020 with a return of +3.8%, while the worst single day was Mar 19, 2020 at -2.8%.


JanFebMarAprMayJunJulAugSepOctNovDecTotal
20260.71%1.35%-2.25%1.00%0.44%0.00%1.22%
20250.50%1.34%-1.66%-0.49%-0.30%0.73%-0.30%0.92%2.41%1.08%0.17%0.08%4.52%
2024-0.32%-0.04%-0.14%-1.13%-0.33%1.52%0.77%0.68%1.13%-1.46%1.94%-1.13%1.44%
20232.99%-2.47%2.34%-0.45%-0.69%0.86%0.13%-1.24%-2.92%-1.53%6.55%2.42%5.74%
2022-2.78%-0.48%-2.88%-2.88%1.56%-2.15%2.42%-2.47%-3.76%-0.92%5.06%-0.16%-9.41%
20210.67%-1.75%0.59%0.92%0.42%0.26%0.65%-0.39%-0.72%-0.15%0.76%0.14%1.38%

Benchmark Metrics

iShares Municipal Bond Index Fund has an annualized alpha of 1.97%, beta of 0.03, and R2 of 0.02 versus S&P 500 Index. Calculated based on daily prices since November 19, 2018.

  • This fund participated in 22.43% of S&P 500 Index downside but only 14.63% of its upside - more exposed to losses than it benefited from rallies.
  • Beta of 0.03 may look defensive, but with R2 of 0.02 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 0.02 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
1.97%
Beta
0.03
0.02
Upside Capture
14.63%
Downside Capture
22.43%

Expense Ratio

BIDAX has an expense ratio of 0.50%, placing it in the medium range.


Return for Risk

Risk / Return Rank

BIDAX ranks 61 for risk / return — better than 61% of mutual funds on our site. You're getting solid returns for the risk taken. A good sign, especially for investors who want growth without excessive volatility.


BIDAX Risk / Return Rank: 6161
Overall Rank
BIDAX Sharpe Ratio Rank: 6969
Sharpe Ratio Rank
BIDAX Sortino Ratio Rank: 8080
Sortino Ratio Rank
BIDAX Omega Ratio Rank: 8787
Omega Ratio Rank
BIDAX Calmar Ratio Rank: 3434
Calmar Ratio Rank
BIDAX Martin Ratio Rank: 3333
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 iShares Municipal Bond Index Fund (BIDAX) and compare them to S&P 500 Index.


BIDAXBenchmarkDifference

Sharpe ratio

Return per unit of total volatility

2.43

2.39

+0.04

Sortino ratio

Return per unit of downside risk

3.80

3.25

+0.54

Omega ratio

Gain probability vs. loss probability

1.60

1.43

+0.17

Calmar ratio

Return relative to maximum drawdown

2.21

3.11

-0.91

Martin ratio

Return relative to average drawdown

7.46

14.38

-6.93

Dividends

Dividend History

iShares Municipal Bond Index Fund provided a 3.11% dividend yield over the last twelve months, with an annual payout of $0.34 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$0.40$0.5020182019202020212022202320242025
Dividends
Dividend Yield
PeriodTTM20252024202320222021202020192018
Dividend$0.34$0.45$0.36$0.24$0.21$0.29$0.29$0.44$0.06

Dividend yield

3.11%4.09%3.25%2.16%1.92%2.36%2.35%3.64%0.48%

Monthly Dividends

The table displays the monthly dividend distributions for iShares Municipal 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$0.03$0.03$0.03$0.03$0.00$0.14
2025$0.05$0.06$0.06$0.06$0.03$0.03$0.03$0.03$0.03$0.03$0.03$0.03$0.45
2024$0.02$0.03$0.02$0.03$0.02$0.03$0.03$0.03$0.03$0.03$0.05$0.05$0.36
2023$0.02$0.03$0.02$0.00$0.02$0.02$0.02$0.02$0.02$0.00$0.03$0.03$0.24
2022$0.02$0.02$0.02$0.02$0.02$0.00$0.00$0.02$0.00$0.02$0.02$0.02$0.21
2021$0.02$0.02$0.02$0.02$0.02$0.02$0.03$0.02$0.02$0.02$0.02$0.04$0.29

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 iShares Municipal 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 iShares Municipal Bond Index Fund was 14.39%, occurring on Oct 25, 2022. Recovery took 725 trading sessions.

The current iShares Municipal Bond Index Fund drawdown is 0.83%.


Related event

Drawdown

Fall

Recovery

Underwater

Bear market2022
-14.39%Oct 2022
1y 2mo2y 10mo
4y 1moAug 2021 - Sep 2025
COVID crash2020
-11.43%Mar 2020
10d4mo 19d
4mo 29dMar 2020 - Aug 2020
2026 pullback2026
-2.95%Mar 2026
25d
3mo 3dMar 2026 - now
2021 pullback2021
-2.18%Feb 2021
9d3mo 8d
3mo 17dFeb 2021 - Jun 2021
2019 pullback2019
-1.72%Sep 2019
12d3mo 17d
3mo 29dSep 2019 - Jan 2020

Drawdown Indicators


BIDAXBenchmarkDifference

Max Drawdown

Largest peak-to-trough decline

-14.39%

-56.78%

+42.39%

Max Drawdown (1Y)

Largest decline over 1 year

-2.95%

-9.10%

+6.15%

Max Drawdown (3Y)

Largest decline over 3 years

-6.07%

-18.90%

+12.83%

Max Drawdown (5Y)

Largest decline over 5 years

-14.39%

-25.43%

+11.04%

Max Drawdown (10Y)

Largest decline over 10 years

-33.92%

Current Drawdown

Current decline from peak

-0.83%

0.00%

-0.83%

Average Drawdown

Average peak-to-trough decline

-3.52%

-10.72%

+7.20%

Ulcer Index

Depth and duration of drawdowns from previous peaks

0.87%

1.97%

-1.10%

Volatility

Volatility Chart

The chart below shows the rolling one-month volatility.


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Portfolio Analyzer

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