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Friday, October 2, 2026The Morning Brief →Sign in
MUBISharesINDEX

iShares National Muni Bond ETF

$101.34+0.24% vs prior close
10010952-WK

Price through Sep 30 · Flows through Sep 29. Figures use the latest available records, not a live quote. Fund details retrieved Oct 1. Holdings snapshot retrieved Oct 1.

The fund will invest at least 80% of its assets in the component securities of the underlying index and it will invest at least 90% of its assets in fixed income securities of the types included in the underlying index that BFA believes will help the fund track the underlying index. The underlying index includes municipal bonds, the interest of which is exempt from Federal income taxes and not subject to alternative minimum tax.

Price & daily flows
107.1104.6102.1101.34DAILY NET FLOWOct 1Jan 30Jun 1Oct 1

SOURCE: MARKET TAPE & DAILY CREATION/REDEMPTION RECORDS · 1Y SHOWN · NET +$9.8B OVER THIS RANGE

The desk’s read

Money keeps arriving — +$3.1B of net inflows over the past month, about 6.6% of the fund's asset base, while the price has returned -5.4% so far this year. At 0.050% a year, no lower reported fee appears among the alternatives shown here.

COMPOSED FROM THE FUND’S OWN DAILY RECORDS · UPDATED WITH EACH REFRESH

$46.6Bassets under management
0.050%expense ratio · $5 per $10,000 a year
+$3.1Bnet flow, trailing month
14.4Mavg daily volume, 30 days
5722holdings · US-domiciled
2007listed September 6, 2007 · beta 0.10
The book at a glance
—0.2%—0.2%—0.1%—0.1%—0.1%—0.1%—0.1%—0.1%—0.1%—0.1%—0.1%—0.1%—0.1%—0.1%—0.1%—0.1%—0.1%—0.1%—0.1%—0.1%—0.1%—0.1%—0.1%—0.1%—0.1%—0.1%—0.1%—0.1%—0.1%—0.1%—0.1%—0.1%—0.1%—0.1%—0.1%—0.1%—0.1%—0.1%—0.1%—0.1%

CELL SIZE IS PORTFOLIO WEIGHT · COLOR IS THE CHANGE IN THE LATEST AVAILABLE SNAPSHOT · TOP 40 POSITIONS

HoldingsDownload CSV
#HoldingWeightPriceDay52-wk
1—ATLANTA GA WTR & WASTE WTR REV0.19%———
2—NEW YORK ST TWY AUTH ST PERS I0.16%———
3—NEW YORK ST DORM AUTH ST PERS0.13%———
4—HOUSTON TEX HIGHER ED FIN CORP0.13%———
5—NORTHWEST TEX INDPT SCH DIST0.13%———
6—OHIO ST UNIV GEN RCPTS0.13%———
7—NEW JERSEY ST0.13%———
8—WASHINGTON ST0.13%———
9—CALIFORNIA ST0.13%———
10—CHICAGO ILL TRAN AUTH SALES TA0.12%———
11—EAST CNTY ADVANCED WTR PURIFIC EAWWTR 09/26 FIXED 3.1250.11%———
12—NEW JERSEY ST EDL FACS AUTH RE0.11%———
13—WASHOE CNTY NEV SCH DIST0.11%———
14—ILLINOIS ST0.11%———
15—MASSACHUSETTS ST0.11%———

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Sector weights
State Tax-Backed29.73%
Local Tax-Backed18.39%
Utility17.14%
Transportation11%
School Districts9.71%
Education8.01%
Cash and/or Derivatives2.66%
Prerefund/Escrow0.96%
PORTFOLIO COMPOSITION, LATEST DISCLOSURE
Performance
1 week+0.2%
1 month-2.9%
3 months-5.6%
6 months-4.4%
YTD-5.4%
1 year-4.7%
3 years—

PRICE RETURN, DISTRIBUTIONS NOT REINVESTED

Net flows
1 week+$1.2B
1 month+$3.1B
3 months+$5B
YTD+$7.8B
1 year+$9.8B

CREATION/REDEMPTION DOLLARS, DAILY RECORDS

Monthly net flows
SepOctNovDecJanFebMarAprMayJulAugSep
DAILY CREATION/REDEMPTION RECORDS, TRAILING TWELVE MONTHS
The risk read
6%realized volatility, 30 days (annualized)
4%realized volatility, 1 year
-7.9%deepest fall from a peak, 1 year
-7.0%latest close versus that peak

The top holding is 0.2% of the book; the top ten carry 1%. Spread across 250+ names, it behaves like roughly 225 equally-weighted positions.

VOLATILITY & DRAWDOWN FROM THE DAILY TAPE · CONCENTRATION FROM THE LATEST DISCLOSED BOOK

Options tape
149calls · latest snapshot
3Kputs · latest snapshot
17.61put/call ratio
17Mshares traded
The case against MUB

Due diligence cuts both ways. These funds sit on the same shelf and beat MUB on at least one dimension that matters — the fee, the asset base, or where the money is going.

FundFeeAssetsFlow, 1MThe case
STIP iShares 0-5 Year TIPS Bond ETF0.03%$16.3B+$489M-2bp on fee · +$489M in over the monthHead-to-head
IJH iShares Core S&P Mid-Cap ETF0.05%$122.8B+$2.3B3× the assets · +$2.3B in over the monthHead-to-head
IGSB iShares 1-5 Year Investment Grade Corporate Bond ETF0.04%$23.7B+$575M-1bp on fee · +$575M in over the monthHead-to-head
IGIB iShares 5-10 Year Investment Grade Corporate Bond ETF0.04%$18.6B+$412M-1bp on fee · +$412M in over the monthHead-to-head
SPSB State Street SPDR Portfolio Short Term Corporate Bond ETF0.04%$10.9B+$606M-1bp on fee · +$606M in over the monthHead-to-head
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InstrumentsHarvest substitutesTrade cost at $1MClient tearsheetStress this fund
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