IUSB vs OBND
iShares Trust iShares Core Universal USD Bond ETF against State Street Loomis Sayles Opportunistic Bond ETF: cost, size, returns, what they hold and how much of it is the same.
Overlap by weight
1%
259 shared positions
Fee gap
49 bp
IUSB is cheaper
1-year return gap
0.3 pts
IUSB is ahead
Larger fund
IUSB
$49.3B
Side by side
| IUSB | OBND | |
|---|---|---|
| Fund | iShares Trust iShares Core Universal USD Bond ETF | State Street Loomis Sayles Opportunistic Bond ETF |
| Issuer | iShares | State Street SPDR |
| Category | Core Bond | Core Bond |
| Expense ratio | 0.06% | 0.55% |
| Assets | $49.3B | $31M |
| Average daily dollar volume | $474M | $95K |
| Listed | Jun 10, 2014 | Sep 27, 2021 |
| FrenzyCap score | 96 | 29 |
| 1-month return | −1.1% | −2.0% |
| 3-month return | −2.2% | −2.4% |
| Year to date | −4.5% | −5.0% |
| 1-year return | −5.6% | −5.9% |
| 30-day volatility | 4.8% | 4.1% |
| Worst drawdown, 1 year | −7.0% | −6.7% |
| Trailing 12-month yield | 4.37% | 6.67% |
| Holdings | 18,285 | 399 |
| Top 10 weight | 3.8% | 16.6% |
| Look-through P/E | — | — |
| Holdings vs fair value | — | — |
| Holdings above 200-day average | — | — |
| Net flow, latest 3 reported months | +$7.2B thru Jul 2026 | +$3.9M thru Jun 2026 |
| 30-day implied volatility | 7.0% | — |
| Holdings as of | as of Oct 20, 2026issuer data | as of Oct 20, 2026issuer data |
Returns are price returns and exclude distributions. Flows are each fund's own latest reported months and may not cover the same period.
Largest shared holdings
1% of IUSB · 43% of OBND| Holding | IUSB | OBND |
|---|---|---|
| SPACE EXPLORATION TECHNOLOGIES COR 144A, due Jul 15, 2036 | 0.01% | 0.17% |
| NVIDIA CORPORATION 4.95%, due Jun 15, 2036 | 0.01% | 0.12% |
| JPMORGAN CHASE & CO 5.5%, due Jan 24, 2036 | 0.01% | 0.05% |
| WULF COMPUTE LLC 144A, due Oct 15, 2030 | 0.01% | 0.14% |
| NVIDIA CORPORATION 5.63%, due Jun 15, 2056 | 0.01% | 0.12% |
| JPMORGAN CHASE & CO 5.57%, due Apr 22, 2036 | 0.01% | 0.13% |
| AERCAP IRELAND CAPITAL DAC 3.3%, due Jan 30, 2032 | 0.01% | 0.13% |
| BRITISH TELECOMMUNICATIONS LTD 9.63%, due Dec 15, 2030 | 0.01% | 0.19% |
| GALAXY HELIOS DATA CENTERS II LLC 144A, due Aug 1, 2031 | 0.01% | 0.25% |
| ORACLE CORPORATION 5.7%, due Feb 4, 2036 | 0.01% | 0.16% |
| STAPLES INC 144A, due Sep 1, 2029 | 0.01% | 0.27% |
| CITIGROUP INC 6.02%, due Jan 24, 2036 | 0.01% | 0.18% |
| TENET HEALTHCARE CORP 6.13%, due Jun 15, 2030 | 0.01% | 0.57% |
| COMCAST CORPORATION 2.99%, due Nov 1, 2063 | 0.01% | 0.13% |
| COREWEAVE INC 144A, due Jun 1, 2030 | 0.01% | 0.29% |
| LAS VEGAS SANDS CORP 5.63%, due Jun 15, 2028 | 0.01% | 0.21% |
| CCO HOLDINGS LLC 144A, due Aug 15, 2030 | 0.01% | 0.08% |
| RIO TINTO FINANCE (USA) PLC 5.25%, due Mar 14, 2035 | 0.01% | 0.10% |
| SPACE EXPLORATION TECHNOLOGIES COR 144A, due Jul 15, 2056 | 0.01% | 0.10% |
| GOLDMAN SACHS GROUP INC/THE MTN 5.42%, due Jun 3, 2037 | 0.01% | 0.35% |
| NOVELIS CORP 144A, due Jan 30, 2030 | 0.01% | 0.13% |
| CENTENE CORPORATION 3.38%, due Feb 15, 2030 | 0.01% | 0.33% |
| SKYDANCE CORP 144A, due Mar 15, 2042 | 0.01% | 0.01% |
| BROADCOM INC 3.5%, due Feb 15, 2041 | 0.01% | 0.17% |
| SOLARIS ENERGY INFRASTRUCTURE LLC 144A, due May 15, 2031 | 0.01% | 0.14% |
Sector mix of the stock holdings
No sector breakdown: these funds hold few classified stocks.
More: full overlap table · IUSB holdings · OBND holdings
Fund data comes from each fund's SEC filings and issuer disclosures and is shown with the date it is as of. SEC portfolio and flow filings become public about 60 days after the period they cover. Nothing here is investment advice; see Terms.