Skip to content
etf.net

IUSB

GradeANASDAQ Global Market

iShares Core Universal USD Bond ETF

Core US Bond · IShares · Inception 2014-06-09 · SEC filings

$44.49−0.43 (−0.95%)

As of Sep 23, 2026, 2:20 PM EDT

Intraday session: down, 59 prints from 44.92 to 44.49. Range 44.45 to 44.83. Use the arrow keys to read each point.$44.60$44.70$44.8010 AM12 PM2 PM4 PM
Expense ratio
0.06%
Fund size
$44.0B
1Y return
+0.4%
Yield · Last 12 months
4.35%
Holdings
18217
Volume · 30D
5.2M sh
NAV per share
$44.87
52W range
low $44.67high $47.23

The ETF.net IUSB Grade

A

86/ 100

Rank 1 of 118 in US Aggregate Bond⁠

Confidence High

Six-pillar profile for IUSB. Scores out of 100: Cost 90, Risk 56, Mission 100, Tradability 91, Holdings 78, Durability 94. Strongest: Mission (100). Weakest: Risk (56). Leans toward Mission and Durability.
F< 25
D≥ 25
C≥ 40
B≥ 55
A≥ 70

Score 86 of 100 sits in the A band. Bands: A ≥ 70, B ≥ 55, C ≥ 40, D ≥ 25, F < 25; the scale skips E.

  • Cost

    What you pay to own it — the expense ratio plus trading frictions, ranked within its category.
    AScore 90
    Category rank14/118 · top 12%

  • Mission

    How faithfully it does the job it claims — tracking its mandate or index with minimal slippage.
    AScore 100
    Category rank31/100 · top 31%

  • Risk

    How violently it can move — volatility, drawdown depth, and downside capture versus its category.
    BScore 56
    Category rank34/117 · top 29%

  • Tradability

    How cheaply and easily you can get in and out — liquidity, spread, and premium/discount stability.
    AScore 91
    Category rank3/118 · top 3%

  • Holdings

    What it actually owns — the quality, breadth, and concentration of the underlying portfolio.
    AScore 78
    Category rank18/117 · top 15%

  • Durability

    Whether it will still be here — the fund’s assets, age, flows, and issuer staying power.
    AScore 94
    Category rank5/118 · top 4%

Graded as of Sep 22, 2026

Our read on IUSB

ETF.net Research

AMost core bond funds stop at investment grade. IUSB keeps going, folding high-yield USD debt into the same wrapper across roughly 18,000 bonds, for 0.06% a year.

Stated mandate

The Fund seeks to track an index of U.S.-dollar-denominated bonds spanning investment-grade and high-yield sectors.

Why people hold it

  1. 010.06% a year, a fraction of what the typical broad bond fund in its category charges, and iShares has run it since 2014.
  2. 02Roughly 18,000 bonds spanning investment-grade and high-yield sectors, so one ticker covers ground a plain Agg tracker leaves on the table.ishares.com
  3. 03Tracks its index closely, trades heavily, and sits on a multi-billion-dollar asset base. Income is paid monthly.
  4. 04Among the strongest implementations in a crowded field of nearly 200 core bond funds.

Worth knowing

  1. 01That high-yield sleeve is the trade-off: more credit risk than an investment-grade-only fund, and more movement when spreads widen.
  2. 02BND, SPAB and SCHZ charge 0.03%, half IUSB's fee, but they stay inside investment grade.
  3. 03Payouts land monthly, but the amount floats with the coupons underneath. Nothing about the income stream is fixed.

IUSB Holdings

As of Sep 22, 2026, 3:52 AM
Asset class
Bonds
Holdings
18,217
Top-10 weight
7%
Largest holding
BLK Liquidity Temp Cash Inst #214.0%

Sectors

  • Energy100.0%

Geography

  • United States83.79%
  • Canada1.59%
  • United Kingdom1.38%
  • Japan0.82%
  • Cayman Islands0.78%
  • Mexico0.70%
  • France0.69%
  • Luxembourg0.65%
  • Other countries (80)9.59%
The fund’s holdings, weight-ordered — page 1 of 1214.
#TickerCompanyWeight %SharesMarket valueIn ETFs
001—BLK Liquidity Temp Cash Inst #214.03%0$1.8B5
002—TREASURY NOTE 4.00% 11/15/20350.48%0$209M47
003—TREASURY NOTE 4.25% 05/15/20350.37%0$161M42
004—TREASURY NOTE 4.38% 12/31/20290.37%0$160M29
005—TREASURY NOTE (OLD) 4.38% 05/15/20360.36%0$157M44
006—TREASURY NOTE (2OLD) 4.13% 06/30/20310.35%0$156M34
007—TREASURY NOTE 4.25% 11/15/20340.35%0$154M37
008—TREASURY NOTE 4.63% 02/15/20350.35%0$154M38
009—TREASURY NOTE 4.00% 02/15/20340.35%0$152M35
010—TREASURY NOTE 4.38% 05/15/20340.35%0$152M35
011—TREASURY NOTE 3.88% 08/15/20340.34%0$150M36
012—TREASURY NOTE 4.25% 08/15/20350.34%0$149M45
013—TREASURY NOTE (2OLD) 4.13% 02/15/20360.34%0$149M54
014—UMBS 30YR TBA(REG A) 2.00% 10/13/20260.32%0$141M35
015—TREASURY NOTE 2.75% 08/15/20320.32%0$139M37

Showing 1–15 of 18205 holdings

IUSB Performance

Shows how $10,000 changes over the selected period, with cash distributions reinvested at the closing price on each ex-dividend date.

IUSB$10,042
SPY tracks large US stocks. It provides market context, rather than representing this fund’s strategy, asset class or investment benchmark.$11,723
Sep 22, 2025 to Sep 22, 2026. IUSB $10,042. SPY $11,723. Use the arrow keys to read each point.$9,353$10,646$11,940Sep 2025Mar 2026Sep 2026

Sep 22, 2025 – Sep 22, 2026

Returns run to the Sep 22, 2026 close, with cash distributions reinvested. Each period starts on the same date that many months or years earlier. Periods over one year show the average yearly return.

Trailing total return for IUSB. Periods over one year show the average yearly return.
PeriodIUSB
Year to date−0.7%
1 month−0.8%
3 months−1.2%
1 year+0.4%
3 years+4.8%per year
5 years−0.1%per year
10 years+1.6%per year

As of the close, with distributions reinvested.

Calendar-year total return with cash distributions hypothetically reinvested at the ex-dividend date’s closing price. The current year shows year to date.

Annual total returns for IUSB
YearReturn barIUSB
2026 YTD−0.7%
2025+7.4%
2024+2.1%
2023+6.2%
2022−13.0%
2021−1.3%
2020+7.6%

IUSB in the news

ETF.net Research hasn’t filed on IUSB yet — coverage lands here as it’s written.

IUSB Dividends

Adds up every distribution paid per share over the last 12 months, divided by the last completed close. Distributions are counted by ex-date. Data through Sep 22, 2026.
4.35%Last 12 months
Payout per share
$1.95Last 12 months
Last payment
$0.17 per share
Paid on
Shares bought on or after this date do not qualify for this distribution.
Frequency
Monthly

Distribution history

2023–2026

One bar per payment. 44 payments from 2023 to 2026 YTD. Feb 1, 2023 $0.12; Mar 1, 2023 $0.12; Apr 3, 2023 $0.12; May 1, 2023 $0.13; Jun 1, 2023 $0.14; Jul 3, 2023 $0.13; Aug 1, 2023 $0.14; Sep 1, 2023 $0.13; Oct 2, 2023 $0.13; Nov 1, 2023 $0.14; Dec 1, 2023 $0.14; Dec 14, 2023 $0.15; Feb 1, 2024 $0.13; Mar 1, 2024 $0.15; Apr 1, 2024 $0.15; May 1, 2024 $0.15; Jun 3, 2024 $0.15; Jul 1, 2024 $0.15; Aug 1, 2024 $0.16; Sep 3, 2024 $0.16; Oct 1, 2024 $0.15; Nov 1, 2024 $0.16; Dec 2, 2024 $0.16; Dec 18, 2024 $0.16; Feb 3, 2025 $0.15; Mar 3, 2025 $0.16; Apr 1, 2025 $0.16; May 1, 2025 $0.16; Jun 2, 2025 $0.17; Jul 1, 2025 $0.16; Aug 1, 2025 $0.17; Sep 2, 2025 $0.16; Oct 1, 2025 $0.17; Nov 3, 2025 $0.16; Dec 1, 2025 $0.16; Dec 19, 2025 $0.16; Feb 2, 2026 $0.17; Mar 2, 2026 $0.16; Apr 1, 2026 $0.16; May 1, 2026 $0.16; Jun 1, 2026 $0.15; Jul 1, 2026 $0.16; Aug 3, 2026 $0.17; Sep 1, 2026 $0.17. Use the arrow keys to read each point.2023202420252026YTD
Ex-datePay dateAmount per share
Sep 1, 2026Sep 4, 2026$0.17
Aug 3, 2026Aug 6, 2026$0.17
Jul 1, 2026Jul 7, 2026$0.16
Jun 1, 2026Jun 4, 2026$0.15
May 1, 2026May 6, 2026$0.16
Apr 1, 2026Apr 7, 2026$0.16
Mar 2, 2026Mar 5, 2026$0.16
Feb 2, 2026Feb 5, 2026$0.17
Dec 19, 2025Dec 24, 2025$0.16
Dec 1, 2025Dec 4, 2025$0.16
Nov 3, 2025Nov 6, 2025$0.16
Oct 1, 2025Oct 6, 2025$0.17

IUSB Risk

How much the fund’s monthly returns vary, scaled to a year.
5.5%
Annualised · 36 months to Aug 2026
How it’s calculated: standard deviation

The sample standard deviation of monthly total returns, multiplied by the square root of 12.

Uses up to 36 complete months, with at least 12 required. Total returns include reinvested distributions.

Return above 3-month US Treasury bills per unit of volatility.
0.01
vs 3-month T-bills · to Aug 2026
How it’s calculated: Sharpe ratio

Subtract each month’s Treasury-bill return from the fund’s monthly total return.

Divide the average of those excess returns by their sample standard deviation, then multiply by the square root of 12.

Uses up to 36 complete months, with at least 12 required. Each month uses the Treasury yield quoted at the end of the previous month.

The largest fall from a peak to the low that followed.
−17.8%
Trough Oct 2022
How it’s calculated: maximum drawdown

The largest percentage decline from an earlier peak, using total returns with reinvested distributions.

Uses up to five years through the last close, with at least 12 months required.

How strongly the fund’s returns move with its asset-class index.
0.96
vs its asset-class index
How it’s calculated: beta

The beta figure is supplied by FMP. The comparison index depends on the fund’s broad asset class.

IUSB Cost

Expense ratio0.06%
  • The middle half of US Aggregate Bond funds
  • Median 0.34%

9 of the 112 US Aggregate Bond funds charge less.

IUSB costs $6.00 a year on $10,000. The median US Aggregate Bond fund costs $34.00.