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IVV vs. VO: What’s The Difference?

The iShares Core S&P 500 ETF (IVV) and the Vanguard Mid-Cap Index Fund ETF Shares (VO) are both among the Top 100 ETFs. IVV is a iShares Large Blend fund and VO is a Vanguard Mid-Cap Blend fund. So, what’s the difference between IVV and VO? And which fund is better?

The expense ratio of IVV is 0.01 percentage points lower than VO’s (0.03% vs. 0.04%). IVV also has a higher exposure to the technology sector and a lower standard deviation. Overall, IVV has provided higher returns than VO over the past ten years.

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

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Summary

IVVVO
NameiShares Core S&P 500 ETFVanguard Mid-Cap Index Fund ETF Shares
CategoryLarge BlendMid-Cap Blend
IssueriSharesVanguard
AUM294.95B154.08B
Avg. Return14.48%14.34%
Div. Yield1.28%1.23%
Expense Ratio0.03%0.04%

The iShares Core S&P 500 ETF (IVV) is a Large Blend fund that is issued by iShares. It currently has 294.95B total assets under management and has yielded an average annual return of 14.48% over the past 10 years. The fund has a dividend yield of 1.28% with an expense ratio of 0.03%.

The Vanguard Mid-Cap Index Fund ETF Shares (VO) is a Mid-Cap Blend fund that is issued by Vanguard. It currently has 154.08B total assets under management and has yielded an average annual return of 14.34% over the past 10 years. The fund has a dividend yield of 1.23% with an expense ratio of 0.04%.

IVV’s dividend yield is 0.05% higher than that of VO (1.28% vs. 1.23%). Also, IVV yielded on average 0.14% more per year over the past decade (14.48% vs. 14.34%). The expense ratio of IVV is 0.01 percentage points lower than VO’s (0.03% vs. 0.04%).

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Fund Composition

Industry Exposure

IVV vs. VO - Industry Exposure

IVVVO
Technology24.64%22.01%
Industrials8.73%11.92%
Energy2.55%3.82%
Communication Services11.24%5.61%
Utilities2.49%5.12%
Healthcare13.52%13.03%
Consumer Defensive6.34%3.25%
Real Estate2.63%8.67%
Financial Services13.86%11.08%
Consumer Cyclical11.74%12.12%
Basic Materials2.27%3.36%

The iShares Core S&P 500 ETF (IVV) has the most exposure to the Technology sector at 24.64%. This is followed by Financial Services and Healthcare at 13.86% and 13.52% respectively. Utilities (2.49%), Energy (2.55%), and Real Estate (2.63%) only make up 7.67% of the fund’s total assets.

IVV’s mid-section with moderate exposure is comprised of Consumer Defensive, Industrials, Communication Services, Consumer Cyclical, and Healthcare stocks at 6.34%, 8.73%, 11.24%, 11.74%, and 13.52%.

The Vanguard Mid-Cap Index Fund ETF Shares (VO) has the most exposure to the Technology sector at 22.01%. This is followed by Healthcare and Consumer Cyclical at 13.03% and 12.12% respectively. Basic Materials (3.36%), Energy (3.82%), and Utilities (5.12%) only make up 12.30% of the fund’s total assets.

VO’s mid-section with moderate exposure is comprised of Communication Services, Real Estate, Financial Services, Industrials, and Consumer Cyclical stocks at 5.61%, 8.67%, 11.08%, 11.92%, and 12.12%.

IVV is 2.63% more exposed to the Technology sector than VO (24.64% vs 22.01%). IVV’s exposure to Financial Services and Healthcare stocks is 2.78% higher and 0.49% higher respectively (13.86% vs. 11.08% and 13.52% vs. 13.03%). In total, Utilities, Energy, and Real Estate also make up 9.94% less of the fund’s holdings compared to VO (7.67% vs. 17.61%).

Holdings

IVV - Holdings

IVV HoldingsWeight
Apple Inc6.14%
Microsoft Corp5.76%
Amazon.com Inc3.83%
Facebook Inc Class A2.29%
Alphabet Inc Class A2.17%
Alphabet Inc Class C2.07%
Tesla Inc1.42%
Berkshire Hathaway Inc Class B1.42%
NVIDIA Corp1.3%
JPMorgan Chase & Co1.23%

IVV’s Top Holdings are Apple Inc, Microsoft Corp, Amazon.com Inc, Facebook Inc Class A, and Alphabet Inc Class A at 6.14%, 5.76%, 3.83%, 2.29%, and 2.17%.

Alphabet Inc Class C (2.07%), Tesla Inc (1.42%), and Berkshire Hathaway Inc Class B (1.42%) have a slightly smaller but still significant weight. NVIDIA Corp and JPMorgan Chase & Co are also represented in the IVV’s holdings at 1.3% and 1.23%.

VO - Holdings

VO HoldingsWeight
IDEXX Laboratories Inc0.78%
DocuSign Inc0.75%
Marvell Technology Inc0.68%
IQVIA Holdings Inc0.68%
Chipotle Mexican Grill Inc0.63%
Veeva Systems Inc Class A0.62%
Digital Realty Trust Inc0.62%
Centene Corp0.62%
Aptiv PLC0.62%
Carrier Global Corp Ordinary Shares0.61%

VO’s Top Holdings are IDEXX Laboratories Inc, DocuSign Inc, Marvell Technology Inc, IQVIA Holdings Inc, and Chipotle Mexican Grill Inc at 0.78%, 0.75%, 0.68%, 0.68%, and 0.63%.

Veeva Systems Inc Class A (0.62%), Digital Realty Trust Inc (0.62%), and Centene Corp (0.62%) have a slightly smaller but still significant weight. Aptiv PLC and Carrier Global Corp Ordinary Shares are also represented in the VO’s holdings at 0.62% and 0.61%.

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Performance

Annual Returns

IVV vs. VO - Annual Returns

YearIVVVO
202018.37%18.22%
201931.44%31.04%
2018-4.42%-9.21%
201721.79%19.25%
201611.9%11.23%
20151.34%-1.34%
201413.62%13.76%
201332.31%35.15%
201215.91%15.98%
20112.03%-1.96%
201014.96%25.57%

IVV had its best year in 2013 with an annual return of 32.31%. IVV’s worst year over the past decade yielded -4.42% and occurred in 2018. In most years the iShares Core S&P 500 ETF provided moderate returns such as in 2014, 2010, and 2012 where annual returns amounted to 13.62%, 14.96%, and 15.91% respectively.

The year 2013 was the strongest year for VO, returning 35.15% on an annual basis. The poorest year for VO in the last ten years was 2018, with a yield of -9.21%. Most years the Vanguard Mid-Cap Index Fund ETF Shares has given investors modest returns, such as in 2014, 2012, and 2020, when gains were 13.76%, 15.98%, and 18.22% respectively.

Portfolio Growth

IVV vs. VO - Portfolio Growth

FundInitial BalanceFinal BalanceCAGR
IVV$10,000$41,97614.48%
VO$10,000$40,40414.34%

A $10,000 investment in IVV would have resulted in a final balance of $41,976. This is a profit of $31,976 over 11 years and amounts to a compound annual growth rate (CAGR) of 14.48%.

With a $10,000 investment in VO, the end total would have been $40,404. This equates to a $30,404 profit over 11 years and a compound annual growth rate (CAGR) of 14.34%.

IVV’s CAGR is 0.14 percentage points higher than that of VO and as a result, would have yielded $1,572 more on a $10,000 investment. Thus, IVV outperformed VO by 0.14% annually.


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