IUSB vs VCRB
iShares Trust iShares Core Universal USD Bond ETF against Vanguard Core Bond ETF: cost, size, returns, what they hold and how much of it is the same.
Overlap by weight
16%
1836 shared positions
Fee gap
4 bp
IUSB is cheaper
1-year return gap
0.5 pts
IUSB is ahead
Larger fund
IUSB
$49.3B
Side by side
| IUSB | VCRB | |
|---|---|---|
| Fund | iShares Trust iShares Core Universal USD Bond ETF | Vanguard Core Bond ETF |
| Issuer | iShares | Vanguard |
| Category | Core Bond | Core Bond |
| Expense ratio | 0.06% | 0.10% |
| Assets | $49.3B | $7.3B |
| Average daily dollar volume | $474M | $77M |
| Listed | Jun 10, 2014 | Dec 14, 2023 |
| FrenzyCap score | 96 | 92 |
| 1-month return | −1.1% | −1.1% |
| 3-month return | −2.2% | −2.4% |
| Year to date | −4.5% | −4.8% |
| 1-year return | −5.6% | −6.1% |
| 30-day volatility | 4.8% | 4.7% |
| Worst drawdown, 1 year | −7.0% | −7.4% |
| Trailing 12-month yield | 4.37% | 4.82% |
| Holdings | 18,285 | 3,421 |
| Top 10 weight | 3.8% | 8.0% |
| Look-through P/E | — | — |
| Holdings vs fair value | — | — |
| Holdings above 200-day average | — | — |
| Net flow, latest 3 reported months | +$7.2B thru Jul 2026 | +$899M 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
23% of IUSB · 56% of VCRB| Holding | IUSB | VCRB |
|---|---|---|
| TREASURY NOTE 4%, due Nov 15, 2035 | 0.42% | 0.38% |
| TREASURY NOTE 4.38%, due May 15, 2034 | 0.31% | 0.46% |
| TREASURY NOTE 4.63%, due Apr 30, 2029 | 0.28% | 0.95% |
| TREASURY NOTE 4.63%, due Feb 15, 2035 | 0.50% | 0.24% |
| TREASURY NOTE 4.13%, due May 31, 2031 | 0.37% | 0.24% |
| TREASURY NOTE 3.5%, due Nov 15, 2028 | 0.23% | 0.60% |
| TREASURY NOTE 2.88%, due May 15, 2032 | 0.23% | 0.69% |
| TREASURY NOTE 3.75%, due Apr 15, 2028 | 0.23% | 0.21% |
| TREASURY NOTE 3.63%, due Aug 31, 2029 | 0.21% | 0.36% |
| TREASURY NOTE 3.5%, due Oct 15, 2028 | 0.27% | 0.21% |
| GNMA2 30YR TBA, due Nov 19, 2026 | 0.20% | 0.36% |
| TREASURY NOTE 4.25%, due Jan 31, 2030 | 0.20% | 0.22% |
| UMBS 30YR TBA(REG A), due Nov 12, 2026 | 0.19% | 0.95% |
| TREASURY BOND 4.25%, due Aug 15, 2054 | 0.20% | 0.19% |
| TREASURY BOND 4.63%, due May 15, 2054 | 0.18% | 0.27% |
| TREASURY BOND 4.13%, due Aug 15, 2053 | 0.18% | 0.23% |
| TREASURY BOND 4%, due Nov 15, 2052 | 0.17% | 0.19% |
| TREASURY NOTE 4.13%, due Oct 31, 2029 | 0.17% | 1.11% |
| TREASURY NOTE 1.13%, due Aug 31, 2028 | 0.16% | 0.25% |
| TREASURY BOND 4.63%, due Nov 15, 2055 | 0.16% | 0.24% |
| TREASURY NOTE 3.63%, due May 31, 2028 | 0.16% | 0.55% |
| TREASURY NOTE 1.88%, due Feb 28, 2029 | 0.16% | 0.60% |
| TREASURY BOND 4.75%, due May 15, 2055 | 0.15% | 0.21% |
| TREASURY BOND 4.75%, due Nov 15, 2053 | 0.15% | 0.23% |
| TREASURY NOTE 3.38%, due Nov 30, 2027 | 0.14% | 0.80% |
Sector mix of the stock holdings
No sector breakdown: these funds hold few classified stocks.
More: full overlap table · IUSB holdings · VCRB 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.