IUSB vs UCON
iShares Trust iShares Core Universal USD Bond ETF against First Trust Smith Unconstrained Bond ETF: cost, size, returns, what they hold and how much of it is the same.
Overlap by weight
3%
282 shared positions
Fee gap
80 bp
IUSB is cheaper
1-year return gap
0.6 pts
IUSB is ahead
Larger fund
IUSB
$49.3B
Side by side
| IUSB | UCON | |
|---|---|---|
| Fund | iShares Trust iShares Core Universal USD Bond ETF | First Trust Smith Unconstrained Bond ETF |
| Issuer | iShares | First Trust |
| Category | Core Bond | Core Bond |
| Expense ratio | 0.06% | 0.86% |
| Assets | $49.3B | $3.1B |
| Average daily dollar volume | $474M | $19M |
| Listed | Jun 10, 2014 | Jun 4, 2018 |
| FrenzyCap score | 96 | 60 |
| 1-month return | −1.1% | −2.2% |
| 3-month return | −2.2% | −2.9% |
| Year to date | −4.5% | −5.4% |
| 1-year return | −5.6% | −6.2% |
| 30-day volatility | 4.8% | 5.0% |
| Worst drawdown, 1 year | −7.0% | −6.3% |
| Trailing 12-month yield | 4.37% | 4.83% |
| Holdings | 18,285 | 454 |
| Top 10 weight | 3.8% | 13.7% |
| Look-through P/E | — | — |
| Holdings vs fair value | — | — |
| Holdings above 200-day average | — | — |
| Net flow, latest 3 reported months | +$7.2B thru Jul 2026 | +$65M thru May 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
4% of IUSB · 73% of UCON| Holding | IUSB | UCON |
|---|---|---|
| TREASURY NOTE (OLD) 4.13%, due Aug 31, 2028 | 0.34% | 1.83% |
| TREASURY NOTE (OLD) 4.38%, due May 15, 2036 | 0.33% | 1.03% |
| TREASURY NOTE (2OLD), due Jul 31, 2031 | 0.27% | 0.81% |
| TREASURY NOTE (OLD) 4.38%, due Aug 31, 2031 | 0.24% | 0.97% |
| TREASURY NOTE 4%, due May 31, 2028 | 0.26% | 0.20% |
| TREASURY NOTE (2OLD), due Jul 31, 2028 | 0.20% | 2.47% |
| TREASURY NOTE (OTR) 4.75%, due Sep 30, 2028 | 0.17% | 1.55% |
| TREASURY NOTE 4.13%, due Oct 31, 2029 | 0.17% | 0.43% |
| TREASURY BOND (OLD) 5%, due May 15, 2056 | 0.17% | 0.69% |
| TREASURY NOTE (2OLD), due Aug 15, 2029 | 0.16% | 0.28% |
| TREASURY BOND (OLD) 5%, due May 15, 2046 | 0.13% | 0.31% |
| TREASURY BOND (OTR) 5.13%, due Aug 15, 2046 | 0.09% | 2.45% |
| TREASURY BOND 1.63%, due Nov 15, 2050 | 0.07% | 0.76% |
| FHLMC 30YR UMBS SUPER, due May 1, 2052 | 0.03% | 0.20% |
| SPACE EXPLORATION TECHNOLOGIES COR 144A, due Jul 15, 2031 | 0.02% | 0.31% |
| MERIDIAN ARC HOLDCO LLC 144A, due Apr 30, 2031 | 0.01% | 0.58% |
| PR RNO PROPERTY OWNER 1 LLC 144A, due May 1, 2031 | 0.01% | 0.14% |
| CITIGROUP INC 5.86%, due Sep 24, 2037 | 0.01% | 0.11% |
| FNMA 30YR UMBS, due May 1, 2052 | 0.01% | 0.07% |
| QUIKRETE HOLDINGS INC 144A, due Mar 1, 2032 | 0.01% | 0.03% |
| CITIGROUP INC 5.27%, due Sep 24, 2029 | 0.01% | 0.33% |
| AERCAP IRELAND CAPITAL DAC 3%, due Oct 29, 2028 | 0.01% | 0.05% |
| NEXSTAR MEDIA INC 144A, due Sep 15, 2033 | 0.01% | 0.32% |
| MORGAN STANLEY 3.77%, due Jan 24, 2029 | 0.01% | 0.05% |
| GOLDMAN SACHS GROUP INC/THE 5.02%, due Oct 23, 2035 | 0.01% | 0.16% |
Sector mix of the stock holdings
| Sector | IUSB | UCON | Gap |
|---|---|---|---|
| Utilities | 0.0% | 0.2% | −0.2% |
More: full overlap table · IUSB holdings · UCON 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.