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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
Private Wealth Daily
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IUSBISharesINDEX

iShares Core Total USD Bond Market ETF

$44.79+0.04% vs prior close
444752-WK

Price through Oct 27, 2026 · Flows through Oct 26, 2026. Figures use the latest available records, not a live quote. Fund details retrieved Oct 27, 2026. Holdings snapshot retrieved Oct 27, 2026.

The fund will invest at least 80% of its assets in the component securities of the underlying index and to-be-announced transactions (“TBAs”) that have economic characteristics that are substantially identical to the economic characteristics of the component securities of the underlying index. The index measures the performance of U.S. dollar-denominated taxable bonds that are rated either investment-grade or high yield.

IUSB price

Source: Market tape, daily closes; price return, distributions not reinvested
Table
DateIUSB close
Jul 27, 2026$45.56
Jul 28, 2026$45.65
Jul 29, 2026$45.51
Jul 30, 2026$45.55
Jul 31, 2026$45.45
Aug 3, 2026$45.37
Aug 4, 2026$45.55
Aug 5, 2026$45.57
Aug 6, 2026$45.45
Aug 7, 2026$45.54
Aug 10, 2026$45.38
Aug 11, 2026$45.42
Aug 12, 2026$45.45
Aug 13, 2026$45.59
Aug 14, 2026$45.48
Aug 17, 2026$45.39
Aug 18, 2026$45.43
Aug 19, 2026$45.64
Aug 20, 2026$45.50
Aug 21, 2026$45.43
Aug 24, 2026$45.51
Aug 25, 2026$45.72
Aug 26, 2026$45.66
Aug 27, 2026$45.62
Aug 28, 2026$45.49
Aug 31, 2026$45.45
Sep 1, 2026$45.15
Sep 2, 2026$45.18
Sep 3, 2026$45.23
Sep 4, 2026$45.24
Sep 8, 2026$45.21
Sep 9, 2026$45.12
Sep 10, 2026$44.84
Sep 11, 2026$44.79
Sep 14, 2026$44.75
Sep 15, 2026$44.73
Sep 16, 2026$44.71
Sep 17, 2026$44.93
Sep 18, 2026$44.77
Sep 21, 2026$44.89
Sep 22, 2026$44.92
Sep 23, 2026$44.54
Sep 24, 2026$44.32
Sep 25, 2026$44.40
Sep 28, 2026$44.17
Sep 29, 2026$44.14
Sep 30, 2026$44.09
Oct 1, 2026$44.03
Oct 2, 2026$43.95
Oct 5, 2026$43.92
Oct 6, 2026$44.03
Oct 7, 2026$44.02
Oct 8, 2026$44.14
Oct 9, 2026$44.14
Oct 12, 2026$44.15
Oct 13, 2026$44.19
Oct 14, 2026$44.24
Oct 15, 2026$44.47
Oct 16, 2026$44.47
Oct 19, 2026$44.33
Oct 20, 2026$44.42
Oct 21, 2026$44.43
Oct 22, 2026$44.77
Oct 23, 2026$44.70
Oct 26, 2026$44.77
Oct 27, 2026$44.79

Weekly net flows, 3M

Net inflow over the range: +$7.4B

  • Inflow / above zero
  • Outflow / below zero
Jul 27Aug 3Aug 10Aug 17Aug 24Aug 31Sep 7Sep 14+$4.4BSep 21Sep 28Oct 5Oct 12Oct 19−$61MOct 26Jul 27Aug 10Aug 24Sep 7+$4.4BSep 21Oct 5−$61MOct 26Jul 27Aug 24+$4.4BSep 21−$61MOct 26
Source: Daily creation and redemption records
Show as table
LabelValue ($)
Jul 27$165.1M
Aug 3$189.5M
Aug 10$162.7M
Aug 17$189.3M
Aug 24$161M
Aug 31$207M
Sep 7$149.4M
Sep 14$431.1M
Sep 21$4.4B
Sep 28$765.6M
Oct 5$316.8M
Oct 12$234.6M
Oct 19$114.8M
Oct 26−$61M
The desk’s read

Money keeps arriving — +$1.4B of net inflows over the past month, about 2.8% of the fund's asset base, while the price has returned -3.8% so far this year. At 0.060% a year it is not the cheapest way in — AGG has a reported fee of 0.03%.

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

$49.6Bassets under management
0.060%expense ratio · $6 per $10,000 a year
+$1.4Bnet flow, trailing month
7.3Mavg daily volume, 30 days
16170holdings · US-domiciled
2014listed June 10, 2014 · beta 0.13
The book at a glance
—0.4%—0.4%—0.4%—0.4%—0.4%—0.4%—0.4%—0.3%—0.3%—0.3%—0.3%—0.3%—0.3%—0.3%—0.3%—0.3%—0.3%—0.3%—0.3%—0.3%—0.3%—0.3%—0.3%—0.3%—0.3%—0.3%—0.3%—0.3%—0.3%—0.3%—0.3%—0.3%—0.3%—0.3%—0.3%—0.3%—0.3%—0.2%—0.2%—0.2%

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

Holdings
#HoldingWeightPriceDay52-wk
1—TREASURY NOTE0.37%———
2—TREASURY NOTE (OLD)0.37%———
3—TREASURY NOTE0.36%———
4—TREASURY NOTE0.36%———
5—TREASURY NOTE0.36%———
6—TREASURY NOTE0.36%———
7—TREASURY NOTE0.36%———
8—TREASURY NOTE (2OLD)0.35%———
9—TREASURY NOTE0.35%———
10—TREASURY NOTE0.35%———
11—TREASURY NOTE0.34%———
12—TREASURY NOTE0.33%———
13—TREASURY NOTE (OLD)0.33%———
14—TREASURY NOTE0.32%———
15—TREASURY NOTE0.32%———

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Sector weights

  • Treasury39.58%
  • MBS Pass-Through19.35%
  • Industrial4.39%
  • Financial Institutions4.13%
  • Sovereign2.6%
  • CMBS1.07%
  • Supranational1%
  • Agency0.93%
  • Cash and/or Derivatives0.78%
  • Local Authority0.27%
Source: Portfolio composition, latest disclosure
Show as table
ItemValue (%)
Treasury39.58%
MBS Pass-Through19.35%
Industrial4.39%
Financial Institutions4.13%
Sovereign2.6%
CMBS1.07%
Supranational1%
Agency0.93%
Cash and/or Derivatives0.78%
Local Authority0.27%

Country weights

  • United States68.34%
  • Supranational1%
  • United Kingdom0.48%
  • Saudi Arabia0.48%
  • Mexico0.44%
  • Canada0.33%
  • Turkey0.28%
  • Argentina0.24%
Source: Portfolio composition, latest disclosure
Show as table
ItemValue (%)
United States68.34%
Supranational1%
United Kingdom0.48%
Saudi Arabia0.48%
Mexico0.44%
Canada0.33%
Turkey0.28%
Argentina0.24%
Performance
1 week+0.8%
1 month+0.9%
3 months-1.7%
6 months-3.5%
YTD-3.8%
1 year-4.9%
3 years—

PRICE RETURN, DISTRIBUTIONS NOT REINVESTED

Net flows
1 week−$43M
1 month+$1.4B
3 months+$7.4B
YTD+$16.8B
1 year+$18.1B

CREATION/REDEMPTION DOLLARS, DAILY RECORDS

Monthly net flows

  • Inflow / above zero
  • Outflow / below zero
+$141MOct+$545.2MNov+$785MDec+$546.9MJan+$718MFeb+$695.5MMar+$416.1MApr+$717.6MMay+$6.4BJul+$761MAug+$5.7BSep+$807.6MOctOctNovDecJanFebMarAprMay+$6.4BJulAugSep+$807.6MOctOctDecFebApr+$6.4BJul+$807.6MOct
Source: Daily creation/redemption records, trailing twelve months
Show as table
LabelValue ($)
Oct$141M
Nov$545.2M
Dec$785M
Jan$546.9M
Feb$718M
Mar$695.5M
Apr$416.1M
May$717.6M
Jul$6.4B
Aug$761M
Sep$5.7B
Oct$807.6M
The risk read
4%realized volatility, 30 days (annualized)
4%realized volatility, 1 year
-6.9%deepest fall from a peak, 1 year
-5.1%latest close versus that peak

The top holding is 0.4% of the book; the top ten carry 4%. Spread across 250+ names, it behaves like roughly 210 equally-weighted positions.

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

Options tape
—calls · latest snapshot
—puts · latest snapshot
—put/call ratio
5.2Mshares traded
The case against IUSB

Due diligence cuts both ways. These funds sit on the same shelf and beat IUSB 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-3bp on fee · +$489M in over the monthHead-to-head
IJH iShares Core S&P Mid-Cap ETF0.05%$123.5B+$2.3B-1bp on fee · 2× the assets · +$2.3B in over the monthHead-to-head
IGSB iShares 1-5 Year Investment Grade Corporate Bond ETF0.04%$23.7B+$51M-2bp on fee · +$51M in over the monthHead-to-head
IGIB iShares 5-10 Year Investment Grade Corporate Bond ETF0.04%$18.6B+$412M-2bp on fee · +$412M in over the monthHead-to-head
MUB iShares National Muni Bond ETF0.05%$48B+$2B-1bp on fee · +$2B in over the monthHead-to-head
Sign in to save this to The RecordA timestamped copy for the file — documentation, not advice.
InstrumentsHarvest substitutesTrade cost at $1MClient tearsheetStress this fund
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