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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.

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Summary

IWBIUSB
NameiShares Russell 1000 ETFiShares Core Total USD Bond Market ETF
CategoryLarge BlendN/A
IssueriSharesiShares
AUM30.54B14.49B
Avg. Return14.64%4.13%
Div. Yield1.14%2.1%
Expense Ratio0.15%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%).

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Fund Composition

Holdings

IWB - Holdings

IWB HoldingsWeight
Apple Inc5.45%
Microsoft Corp5.11%
Amazon.com Inc3.43%
Facebook Inc Class A2.03%
Alphabet Inc Class A1.93%
Alphabet Inc Class C1.82%
Tesla Inc1.27%
Berkshire Hathaway Inc Class B1.24%
NVIDIA Corp1.11%
JPMorgan Chase & Co1.09%

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 SectorsWeight
AAA58.32%
BBB16.98%
A12.27%
BB4.33%
AA3.36%
B2.8%
Others1.01%
Below B0.92%
US Government0.0%

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.

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Risk Analysis

IWBIUSB
Mean Return1.270
R-squared99.730
Std. Deviation13.870
Alpha-0.380
Beta1.020
Sharpe Ratio1.050
Treynor Ratio14.310

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.

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Performance

Annual Returns

IWB vs. IUSB - Annual Returns

YearIWBIUSB
202020.8%7.59%
201931.26%9.26%
2018-4.91%-0.38%
201721.53%4.06%
201611.91%3.78%
20150.82%0.46%
201413.08%0.0%
201332.93%0.0%
201216.27%0.0%
20111.36%0.0%
201015.94%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

FundInitial BalanceFinal BalanceCAGR
IWB$10,000$20,67414.64%
IUSB$10,000$12,7044.13%

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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