IWB vs. IUSB: What’s The Difference?

The iShares Russell 1000 ETF (IWB) and the iShares Core Total USD Bond Market ETF (IUSB) are both among the Top 100 ETFs. IWB is a iShares Large Blend fund and IUSB is a iShares N/A fund. So, what’s the difference between IWB and IUSB? And which fund is better?

The expense ratio of IWB is 0.09 percentage points higher than IUSB’s (0.15% vs. 0.06%). IWB also has a high exposure to the technology sector while IUSB is mostly comprised of AAA bonds. Overall, IWB has provided higher returns than IUSB over the past ten years.

In this article, we’ll compare IWB vs. IUSB. We’ll look at performance and holdings, as well as at their annual returns and portfolio growth. Moreover, I’ll also discuss IWB’s and IUSB’s risk metrics, fund composition, and industry exposure and examine how these affect their overall returns.

Summary

IWB IUSB
Name iShares Russell 1000 ETF iShares Core Total USD Bond Market ETF
Category Large Blend N/A
Issuer iShares iShares
AUM 30.54B 14.49B
Avg. Return 14.64% 4.13%
Div. Yield 1.14% 2.1%
Expense Ratio 0.15% 0.06%

The iShares Russell 1000 ETF (IWB) is a Large Blend fund that is issued by iShares. It currently has 30.54B total assets under management and has yielded an average annual return of 14.64% over the past 10 years. The fund has a dividend yield of 1.14% with an expense ratio of 0.15%.

The iShares Core Total USD Bond Market ETF (IUSB) is a N/A fund that is issued by iShares. It currently has 14.49B total assets under management and has yielded an average annual return of 4.13% over the past 10 years. The fund has a dividend yield of 2.1% with an expense ratio of 0.06%.

IWB’s dividend yield is 0.96% lower than that of IUSB (1.14% vs. 2.1%). Also, IWB yielded on average 10.51% more per year over the past decade (14.64% vs. 4.13%). The expense ratio of IWB is 0.09 percentage points higher than IUSB’s (0.15% vs. 0.06%).

Fund Composition

Holdings

IWB - Holdings

IWB Holdings Weight
Apple Inc 5.45%
Microsoft Corp 5.11%
Amazon.com Inc 3.43%
Facebook Inc Class A 2.03%
Alphabet Inc Class A 1.93%
Alphabet Inc Class C 1.82%
Tesla Inc 1.27%
Berkshire Hathaway Inc Class B 1.24%
NVIDIA Corp 1.11%
JPMorgan Chase & Co 1.09%

IWB’s Top Holdings are Apple Inc, Microsoft Corp, Amazon.com Inc, Facebook Inc Class A, and Alphabet Inc Class A at 5.45%, 5.11%, 3.43%, 2.03%, and 1.93%.

Alphabet Inc Class C (1.82%), Tesla Inc (1.27%), and Berkshire Hathaway Inc Class B (1.24%) have a slightly smaller but still significant weight. NVIDIA Corp and JPMorgan Chase & Co are also represented in the IWB’s holdings at 1.11% and 1.09%.

IUSB - Holdings

IUSB Bond Sectors Weight
AAA 58.32%
BBB 16.98%
A 12.27%
BB 4.33%
AA 3.36%
B 2.8%
Others 1.01%
Below B 0.92%
US Government 0.0%

IUSB’s Top Bond Sectors are ratings of AAA, BBB, A, BB, and AA at 58.32%, 16.98%, 12.27%, 4.33%, and 3.36%. The fund is less weighted towards B (2.8%), Others (1.01%), and Below B (0.92%) rated bonds.

Risk Analysis

IWB IUSB
Mean Return 1.27 0
R-squared 99.73 0
Std. Deviation 13.87 0
Alpha -0.38 0
Beta 1.02 0
Sharpe Ratio 1.05 0
Treynor Ratio 14.31 0

The iShares Russell 1000 ETF (IWB) has a Alpha of -0.38 with a Beta of 1.02 and a Sharpe Ratio of 1.05. Its Mean Return is 1.27 while IWB’s Standard Deviation is 13.87. Furthermore, the fund has a Treynor Ratio of 14.31 and a R-squared of 99.73.

The iShares Core Total USD Bond Market ETF (IUSB) has a Beta of 0 with a Alpha of 0 and a Treynor Ratio of 0. Its Mean Return is 0 while IUSB’s Standard Deviation is 0. Furthermore, the fund has a Sharpe Ratio of 0 and a R-squared of 0.

IWB’s Mean Return is 1.27 points higher than that of IUSB and its R-squared is 99.73 points higher. With a Standard Deviation of 13.87, IWB is slightly more volatile than IUSB. The Alpha and Beta of IWB are 0.38 points lower and 1.02 points higher than IUSB’s Alpha and Beta.

Performance

Annual Returns

IWB vs. IUSB - Annual Returns

Year IWB IUSB
2020 20.8% 7.59%
2019 31.26% 9.26%
2018 -4.91% -0.38%
2017 21.53% 4.06%
2016 11.91% 3.78%
2015 0.82% 0.46%
2014 13.08% 0.0%
2013 32.93% 0.0%
2012 16.27% 0.0%
2011 1.36% 0.0%
2010 15.94% 0.0%

IWB had its best year in 2013 with an annual return of 32.93%. IWB’s worst year over the past decade yielded -4.91% and occurred in 2018. In most years the iShares Russell 1000 ETF provided moderate returns such as in 2014, 2010, and 2012 where annual returns amounted to 13.08%, 15.94%, and 16.27% respectively.

The year 2019 was the strongest year for IUSB, returning 9.26% on an annual basis. The poorest year for IUSB in the last ten years was 2018, with a yield of -0.38%. Most years the iShares Core Total USD Bond Market ETF has given investors modest returns, such as in 2011, 2010, and 2015, when gains were 0.0%, 0.0%, and 0.46% respectively.

Portfolio Growth

IWB vs. IUSB - Portfolio Growth

Fund Initial Balance Final Balance CAGR
IWB $10,000 $20,674 14.64%
IUSB $10,000 $12,704 4.13%

A $10,000 investment in IWB would have resulted in a final balance of $20,674. This is a profit of $10,674 over 6 years and amounts to a compound annual growth rate (CAGR) of 14.64%.

With a $10,000 investment in IUSB, the end total would have been $12,704. This equates to a $2,704 profit over 6 years and a compound annual growth rate (CAGR) of 4.13%.

IWB’s CAGR is 10.51 percentage points higher than that of IUSB and as a result, would have yielded $7,970 more on a $10,000 investment. Thus, IWB outperformed IUSB by 10.51% annually.


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