Which returned more over the last year, IVV or VO?

In the year to Oct 28, 2026, with distributions reinvested, IVV returned +13.7% and VO +12.8%.

Which is cheaper, IVV or VO?

Neither: IVV and VO both charge 0.03% a year. Fees come from each fund's prospectus.

How much do IVV and VO overlap with the S&P 500?

By their latest filed holdings, 100% of IVV and 91% of VO by weight is stocks the S&P 500 already holds.

Data as of Oct 28, 2026.

Across categories

IVV vs VO: Differences, Returns & Fees

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Over the year to Oct 28, 2026, IVV returned +13.7% to VO's +12.8%; 16% of their weight is in the same names.

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Net assets: $885.1bn on Oct 27, 2026 for iShares Core S&P 500 ETF, and $103.4bn on Sep 30, 2026 for Vanguard Morningstar Mid-Cap ETF.

IVV on its own →VO on its own →

At a glance

+13.7%

IVV total return, 1 year

+12.8%

VO total return, 1 year

0.03%

IVV expense ratio

0.03%

VO expense ratio

Pair scorecard

Both cost 0.03% a year; their one-year returns differ by 0.9 points; IVV is 8.5 times larger.

Points (pts) are percentage points.

IVV vs VO: Differences, Returns & Fees
Measure	IVV	VO
Return
Measure	IVV	VO
Total return, 1 year	+13.7%	+12.8%
Drawdown
Measure	IVV	VO
Below its high		3.1%, high on Aug 14, 2026
Benchmark
Measure	IVV	VO
What it tracks	S&P 500	Morningstar US Mid Cap Index (formerly CRSP US Mid Cap Index)
Cost and size
Measure	IVV	VO
Expense ratio	0.03%	0.03%
Net assets, as of Sep 30, 2026	$881.3bn	$103.4bn
Holdings
Measure	IVV	VO
Holdings in common	16%
Top ten holdings, share of the fund	38.1%	9.7%

Holdings in common uses holdings dated Sep 30, 2026 and Oct 27, 2026. Method

Risk and return

Feb 6, 2004 to Oct 23, 2026 · 1,185 weekly returns

IVV VO

Return

Total return edge IVV +913.9% +797.9%

Annualized edge IVV (slight) +10.7% +10.1%

Price return edge IVV (slight) +566.5% +546.9%

Risk

Volatility edge IVV 17.1% 19.6%

Max drawdown edge IVV (slight) −54.7% −58.4%

Risk-adjusted

Sharpe edge IVV 0.58 0.50

Sortino edge IVV 0.82 0.71

Calmar edge IVV 0.20 0.17

Reading

IVV returned more: +913.9% to +797.9%. IVV swung less: 17.1% to 19.6%. IVV fell slightly less at its worst: −54.7% to −58.4%.

Full scorecard

9 measures, with how each is measured Open ↓

Risk and return: IVV vs VO: Differences, Returns & Fees
Measure	IVV	VO	Edge	How it is measured
Return
Total return	+913.9%	+797.9%	IVV	Price change plus distributions, reinvested.
Annualized	+10.7%	+10.1%	IVV (slight)	Total return as a yearly rate.
Price return	+566.5%	+546.9%	IVV (slight)	Price change alone, distributions left out.
Risk
Volatility	17.1%	19.6%	IVV	Spread of weekly returns, annualized. Lower is steadier.
Downside deviation	12.0%	13.8%	IVV	Like volatility, counting only weeks below the Treasury bill rate.
Max drawdown	−54.7%	−58.4%	IVV (slight)	Deepest fall from a high to the low after it.
Risk-adjusted
Sharpe	0.58	0.50	IVV	Return above Treasury bills per unit of volatility.
Sortino	0.82	0.71	IVV	Return above Treasury bills per unit of downside deviation.
Calmar	0.20	0.17	IVV	Annualized return divided by the max drawdown.

Computed by ETFIQ from Tiingo daily prices and ETFIQ's distribution records, 1,185 weekly returns. Cash rate: the 13-week Treasury bill.

What they share

16%

By the books each fund has filed, IVV and VO hold 16% of their money in the same securities at the same weight. Holdings dated Sep 30, 2026 and Oct 27, 2026.

50%

0 half 100%

half

16% in common

Positions both hold · largest shared weight first IVV VO

MARATHON PETROLEUM 0.18% 1.10%

NEWMONT 0.18% 0.60%

FORTINET 0.17% 0.55%

VALERO ENERGY CORP 0.17% 1.10%

PHILLIPS 66 0.16% 1.01%

JOHNSON CONTROLS INTERNATIONAL PLC 0.14% 0.45%

DATADOG INC CLASS A 0.14% 0.91%

WILLIAMS 0.14% 0.41%

QUANTA SERVICES INC 0.13% 0.95%

CONSTELLATION ENERGY CORP 0.13% 0.84%

TRAVELERS COMPANIES 0.12% 0.37%

HEWLETT PACKARD ENTERPRISE 0.12% 0.79%

Only in one fund ↓

Only in IVV

NVIDIA 7.92%

APPLE 7.61%

MICROSOFT 5.93%

AMAZON.COM INC 3.73%

ALPHABET CLASS A 2.83%

BROADCOM INC 2.45%

ALPHABET CLASS C 2.26%

META PLATFORMS CLASS A 2.05%

Only in VO

Cloudflare Inc 1.11%

Warner Bros Discovery Inc 0.73%

Snowflake Inc 0.55%

Strategy Inc 0.55%

Astera Labs Inc 0.55%

Cheniere Energy Inc 0.55%

Corteva Inc 0.51%

Rocket Lab Corp 0.41%

Check overlap with more funds →

Side by side

IVV iShares Core S&P 500 ETF VO Vanguard Morningstar Mid-Cap ETF

Where it sits Stock ETF Stock ETF

Issuer iShares Vanguard

What it is Tracks the S&P 500 Tracks an index of Mid-Cap

Total return, 1 year +13.7% +12.8%

Its benchmark over the same days +13.6% (SPY) not measured

Gap to its benchmark +0.1 pts vs SPY not measured

Expense ratio 0.03% 0.03%

Already in the S&P 500 99.8% 91.1%

Holdings 505 273

Net assets, IVV as of Oct 27, 2026 and VO as of Sep 30, 2026 $885.1bn $103.4bn

IVV and VO on the fields both publish, as of Oct 28, 2026. Source: ETFIQ.

Client brief · page 1 of 2 Report BR-6E21ED2153

IVV and VO do different jobs. What does each one do in a portfolio?

What each follows. IVV follows S&P 500 and VO follows Morningstar US Mid Cap Index (formerly CRSP US Mid Cap Index).
Holdings in common. 16% of the weight is in the same securities (holdings dated Oct 27, 2026 and Sep 30, 2026).
Size. IVV has $881.3bn in net assets and VO $103.4bn (net assets, as of Sep 30, 2026); IVV is 8.5 times larger.

Data as of Oct 28, 2026.

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About each fund

IVV

IVV tracks the S&P 500. Over the year to Oct 28, 2026 it returned +13.7% with distributions reinvested, against +13.6% for its benchmark, the S&P 500. The prospectus expense ratio is 0.03% a year. By its holdings published by its issuer for Oct 27, 2026, 100% of the fund by weight is stocks the S&P 500 also holds, across 505 positions, with the top ten at 38.1%.

VO tracks an index of Mid-Cap. Over the year to Oct 28, 2026 it returned +12.8% with distributions reinvested. By its holdings published by its issuer as of Sep 30, 2026, 91% of the fund by weight is stocks the S&P 500 also holds, across 273 positions, with the top ten at 9.7%. It sat 3.1% below its high of Aug 14, 2026 on Oct 28, 2026.

Questions people ask

Which returned more over the last year, IVV or VO?: In the year to Oct 28, 2026, with distributions reinvested, IVV returned +13.7% and VO +12.8%.
Which is cheaper, IVV or VO?: Neither: IVV and VO both charge 0.03% a year. Fees come from each fund's prospectus.
How much do IVV and VO overlap with the S&P 500?: By their latest filed holdings, 100% of IVV and 91% of VO by weight is stocks the S&P 500 already holds.

Other comparisons

IVV vs VXF IVV vs MDY IVV vs MOAT FTGS vs IVV SPY vs VO VO vs VOO VO vs VTI RDVY vs VO

Where to next

IVV on its own →VO on its own →Hold both: look the portfolio through →Rankings →IVV dividend history →IVV holdings →VO dividend history →VO holdings →Standards and sources →

Sources and dates

IVV filings on SEC EDGAR ↗

IVV prospectus with the expense ratio (SEC) ↗

iShares page for IVV ↗

VO filings on SEC EDGAR ↗

VO prospectus with the expense ratio (SEC) ↗

Vanguard page for VO ↗

Links are sources, not endorsements. A comparison is not a recommendation.

How this is computed

Overlap adds up the smaller of the two weights for each security both funds hold.

Cite this pageCitation, APA and Markdown

ETFIQ, IVV against VO, data as of Oct 28, 2026. https://etfiq.com/compare/any/ivv-vs-vo

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Free to use with attribution for data ETFIQ computes; issuer data stays under its owner's terms.