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Wednesday, August 19, 2026The Morning Brief →Sign in
ISTBISharesINDEX

iShares Core 1-5 Year USD Bond ETF

$48.09+0.06% today
484952-WK

The fund will invest at least 80% of its assets in the component securities of the index and TBA transactions that have economic characteristics that are substantially identical to the economic characteristics of the component securities of the index and it will invest at least 90% of its assets in fixed income securities of the types included in the index.

Price & daily flows
48.848.548.148.09DAILY NET FLOWAug 19Dec 16Apr 17Aug 19

SOURCE: MARKET TAPE & DAILY CREATION/REDEMPTION RECORDS · 1Y SHOWN

The desk’s read

Flows are quiet — the past month netted out near zero, while the price has returned -1.4% so far this year. At 0.060% a year it is not the cheapest way in — AGG runs the same ground at 0.03%.

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

$4.4Bassets under management
0.060%expense ratio · $6 per $10,000 a year
net flow, trailing month
396Kavg daily volume, 30 days
5952holdings · US-domiciled
2012listed October 17, 2012 · beta 0.05
The book at a glance
0.9%0.9%0.8%0.8%0.8%0.8%0.7%0.7%0.7%0.7%0.7%0.7%0.7%0.7%0.6%0.6%0.6%0.6%0.6%0.6%0.6%0.6%0.6%0.6%0.6%0.6%0.6%0.6%0.6%0.5%0.5%0.5%0.5%0.5%0.5%0.5%0.5%0.5%0.5%0.5%

CELL SIZE IS PORTFOLIO WEIGHT · COLOR IS TODAY’S MOVE · TOP 40 POSITIONS

HoldingsDownload CSV
#HoldingWeightPriceDay52-wk
1TREASURY NOTE (OLD)0.89%
2TREASURY NOTE0.88%
3TREASURY NOTE0.77%
4TREASURY NOTE0.76%
5TREASURY NOTE0.75%
6TREASURY NOTE0.75%
7TREASURY NOTE (OTR)0.72%
8TREASURY NOTE0.71%
9TREASURY NOTE0.69%
10TREASURY NOTE0.69%
11TREASURY NOTE0.68%
12TREASURY NOTE0.67%
13TREASURY NOTE (OLD)0.65%
14TREASURY NOTE0.65%
15TREASURY NOTE0.64%

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Sector weights
Treasury51.44%
Industrial14.73%
Financial Institutions11.09%
MBS Pass-Through3.41%
Agency2.77%
CMBS2.21%
Supranational2.17%
Sovereign1.95%
Utility1.28%
ABS0.75%
PORTFOLIO COMPOSITION, LATEST DISCLOSURE
Country weights
United States78.07%
Supranational2.17%
Canada1.83%
United Kingdom1.36%
France0.98%
Japan0.97%
Germany0.93%
China0.6%
PORTFOLIO COMPOSITION, LATEST DISCLOSURE
Performance
1 week+0.2%
1 month-0.0%
3 months-0.1%
6 months-1.7%
YTD-1.4%
1 year
3 years

PRICE RETURN, DISTRIBUTIONS NOT REINVESTED

Net flows
1 week
1 month
3 months
YTD
1 year

CREATION/REDEMPTION DOLLARS, DAILY RECORDS

Monthly net flows
AugSepOctNovDecJanFebMarAprMayJunJul
DAILY CREATION/REDEMPTION RECORDS, TRAILING TWELVE MONTHS
The risk read
2%realized volatility, 30 days (annualized)
2%realized volatility, 1 year
-2.3%deepest fall from a peak, 1 year
-1.9%where it sits vs. that peak today

The top holding is 1.1% of the book; the top ten carry 8%. Spread across 250+ names, it behaves like roughly 128 equally-weighted positions.

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

Options tape
calls today
puts today
put/call ratio
267Kshares traded
The case against ISTB

Due diligence cuts both ways. These funds sit on the same shelf and beat ISTB 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%$16B+$288M-3bp on fee · 4× the assets · +$288M in over the monthHead-to-head
MBB iShares MBS ETF0.04%$39B+$26M-2bp on fee · 9× the assets · +$26M in over the monthHead-to-head
IGSB iShares 1-5 Year Investment Grade Corporate Bond ETF0.04%$23.4B+$520M-2bp on fee · 5× the assets · +$520M in over the monthHead-to-head
IGIB iShares 5-10 Year Investment Grade Corporate Bond ETF0.04%$18.7B+$312M-2bp on fee · 4× the assets · +$312M in over the monthHead-to-head
MUB iShares National Muni Bond ETF0.05%$45.8B+$585M-1bp on fee · 10× the assets · +$585M in over the monthHead-to-head
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InstrumentsHarvest substitutesTrade cost at $1MClient tearsheetStress this fund
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