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Tuesday, October 27, 2026 · Today’s edition, 6:30 a.m. ETTue, Oct 27 · 6:30 a.m. editionSign inMy Desk 0EditionsSign in
MUBISharesINDEX

iShares National Muni Bond ETF

$103.82+0.38% vs prior close
10010952-WK

Price through Oct 26, 2026 · Flows through Oct 23, 2026. Figures use the latest available records, not a live quote. Fund details retrieved Oct 26, 2026. Holdings snapshot retrieved Oct 26, 2026.

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.

MUB price

Source: Market tape, daily closes; price return, distributions not reinvested
Table
DateMUB close
Sep 28, 2026$100.61
Sep 29, 2026$100.28
Sep 30, 2026$101.10
Oct 1, 2026$101.34
Oct 2, 2026$100.96
Oct 5, 2026$101.12
Oct 6, 2026$101.02
Oct 7, 2026$100.52
Oct 8, 2026$100.74
Oct 9, 2026$101.08
Oct 12, 2026$101.16
Oct 13, 2026$101.77
Oct 14, 2026$101.65
Oct 15, 2026$102.48
Oct 16, 2026$102.35
Oct 19, 2026$102.34
Oct 20, 2026$102.35
Oct 21, 2026$102.45
Oct 22, 2026$103.24
Oct 23, 2026$103.43
Oct 26, 2026$103.82

Daily net flows, 1M

Net inflow over the range: +$7.7B

  • Inflow / above zero
  • Outflow / below zero
Sep 23Sep 25Sep 29Oct 1Oct 5Oct 7Oct 9Oct 13Oct 15Oct 19Oct 21+$865.2MOct 23Sep 23Sep 28Oct 1Oct 6Oct 9Oct 14Oct 19+$865.2MOct 23Sep 23Oct 1Oct 9Oct 19+$865.2MOct 23
Source: Daily creation and redemption records
Show as table
LabelValue ($)
Sep 23$520.2M
Sep 24−$102
Sep 25$0
Sep 28$191.9M
Sep 29$460M
Sep 30$525.2M
Oct 1$626.2M
Oct 2$555.5M
Oct 5$70.7M
Oct 6$40.4M
Oct 7$140M
Oct 8$323.2M
Oct 9$434.3M
Oct 12$646.4M
Oct 13$0
Oct 14$151.5M
Oct 15$418.2M
Oct 16$295.8M
Oct 19$652.8M
Oct 20$71.4M
Oct 21$306M
Oct 22$401.7M
Oct 23$865.2M
The desk’s read

Money keeps arriving — +$7.2B of net inflows over the past month, about 13.3% of the fund's asset base, while the price has returned -3.1% so far this year. At 0.050% a year it is not the cheapest way in — IVV has a reported fee of 0.03%.

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

$53.9Bassets under management
0.050%expense ratio · $5 per $10,000 a year
+$7.2Bnet flow, trailing month
18.7Mavg daily volume, 30 days
5722holdings · US-domiciled
2007listed September 7, 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

Holdings
#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%
Source: Portfolio composition, latest disclosure
Show as table
ItemValue (%)
State Tax-Backed29.73%
Local Tax-Backed18.39%
Utility17.14%
Transportation11%
School Districts9.71%
Education8.01%
Cash and/or Derivatives2.66%
Prerefund/Escrow0.96%
Performance
1 week+1.4%
1 month+2.6%
3 months-1.6%
6 months-3.3%
YTD-3.1%
1 year—
3 years—

PRICE RETURN, DISTRIBUTIONS NOT REINVESTED

Net flows
1 week+$1.6B
1 month+$7.2B
3 months+$9.9B
YTD+$13.8B
1 year+$15B

CREATION/REDEMPTION DOLLARS, DAILY RECORDS

Monthly net flows

  • Inflow / above zero
  • Outflow / below zero
+$1.3BOct+$524.3MNov+$96.3MDec+$658.6MJan+$304.4MFeb+$441MMar+$766.5MApr+$607.3MMay+$1.6BJul+$345.2MAug+$3.1BSep+$6BOctOctNovDecJanFebMarAprMayJulAugSep+$6BOctOctDecFebAprJul+$6BOct
Source: Daily creation/redemption records, trailing twelve months
Show as table
LabelValue ($)
Oct$1.3B
Nov$524.3M
Dec$96.3M
Jan$658.6M
Feb$304.4M
Mar$441M
Apr$766.5M
May$607.3M
Jul$1.6B
Aug$345.2M
Sep$3.1B
Oct$6B
The risk read
6%realized volatility, 30 days (annualized)
4%realized volatility, 1 year
-7.9%deepest fall from a peak, 1 year
-4.7%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
101calls · latest snapshot
249puts · latest snapshot
2.47put/call ratio
9.7Mshares 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%$16.4B+$489M-2bp on fee · +$489M in over the monthHead-to-head
IJH iShares Core S&P Mid-Cap ETF0.05%$123.5B+$2.3B2× the assets · +$2.3B in over the monthHead-to-head
SPTS State Street SPDR Portfolio Short Term Treasury ETF0.03%$7.1B+$1.4B-2bp on fee · +$1.4B in over the monthHead-to-head
IGSB iShares 1-5 Year Investment Grade Corporate Bond ETF0.04%$23.7B+$51M-1bp on fee · +$51M 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
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