Are IBB and VOOG in the same category?

IBB is a thematic ETF and VOOG is a stock ETF, so they do different jobs. The table compares what both publish: return, cost and holdings.

Which returned more over the last year, IBB or VOOG?

In the year to Oct 28, 2026, with distributions reinvested, IBB returned +37.5% and VOOG +12.1%.

Which is cheaper, IBB or VOOG?

VOOG is cheaper, by 0.39 percentage points a year. That is about $39 on $10,000 held for a year. Fees come from each fund's prospectus.

How much do IBB and VOOG overlap with the S&P 500?

By their latest filed holdings, 40% of IBB and 100% of VOOG by weight is stocks the S&P 500 already holds.

Data as of Oct 28, 2026.

Across categories

IBB vs VOOG: Differences, Returns & Fees

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Over the year to Oct 28, 2026, IBB returned +37.5% to VOOG's +12.1%, and VOOG charges 0.05% to IBB's 0.44%.

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Net assets: $11.0bn on Oct 27, 2026 for iShares Biotechnology ETF, and $27.8bn on Sep 30, 2026 for Vanguard S&P 500 Growth ETF.

IBB on its own →VOOG on its own →

At a glance

+37.5%

IBB total return, 1 year

+12.1%

VOOG total return, 1 year

0.44%

IBB expense ratio

0.05%

VOOG expense ratio

Pair scorecard

VOOG costs 0.39 points a year less; their one-year returns differ by 25.4 points; VOOG is 2.5 times larger.

IBB vs VOOG: Differences, Returns & Fees
Measure	IBB	VOOG
Return
Measure	IBB	VOOG
Total return, 1 year	+37.5%	+12.1%
Drawdown
Measure	IBB	VOOG
Below its high		4.1%, high on Oct 6, 2026
Benchmark
Measure	IBB	VOOG
What it tracks	Biotech	S&P 500 Growth Index
Cost and size
Measure	IBB	VOOG
Expense ratio	0.44%	0.05%
Net assets, as of Sep 30, 2026	$11.2bn	$27.8bn
Active share vs the S&P 500	99%
Holdings
Measure	IBB	VOOG
Holdings in common	1%
Top ten holdings, share of the fund	50%	60.2%

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

What they share

By the books each fund has filed, IBB and VOOG hold 1% 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

1% in common

Positions both hold · largest shared weight first IBB VOOG

AMGEN INC 8.20% 0.42%

GILEAD SCIENCES 8.56% 0.27%

ILLUMINA INC 2.93% 0.06%

INCYTE CORP 1.63% 0.06%

Only in one fund ↓

Only in IBB

VERTEX PHARMACEUTICALS 7.53%

REGENERON PHARMACEUTICALS 5.64%

MODERNA 5.29%

NATERA 3.85%

ARGENX SE ADR 3.42%

BIOGEN 2.58%

REVOLUTION MEDICINES 2.50%

BEONE MEDICINES AG 2.15%

Only in VOOG

NVIDIA Corp 15.01%

Microsoft Corp 10.34%

Apple Inc 6.60%

Alphabet Inc 5.48%

Broadcom Inc 4.54%

Alphabet Inc 4.39%

Meta Platforms Inc 4.34%

Amazon.com Inc 3.52%

Check overlap with more funds →

Side by side

IBB iShares Biotechnology ETF VOOG Vanguard S&P 500 Growth ETF

Where it sits Thematic ETF Stock ETF

Issuer iShares Vanguard

What it is Biotech Tracks the S&P 500 Growth

Total return, 1 year +37.5% +12.1%

Its benchmark over the same days not measured +12.1% (IVW)

Gap to its benchmark not measured 0.0 pts vs IVW

Expense ratio 0.44% 0.05%

Already in the S&P 500 40.2% 99.8%

Holdings 245 154

Net assets, IBB as of Oct 27, 2026 and VOOG as of Sep 30, 2026 $11.0bn $27.8bn

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

Alert

About each fund

IBB

By weight, 40% of IBB's portfolio is stocks that are also in the S&P 500; its active share against the S&P 500 is 99%. The top ten holdings are 50% of the fund across 245 positions, as published by its issuer for Oct 27, 2026. Over the year to Oct 28, 2026 the fund returned +37.5% with distributions reinvested.

VOOG

VOOG tracks the S&P 500 Growth. Over the year to Oct 28, 2026 it returned +12.1% with distributions reinvested, against +12.1% for its benchmark, the S&P 500 Growth Index. The prospectus expense ratio is 0.05% a year. By its holdings published by its issuer as of Sep 30, 2026, 100% of the fund by weight is stocks the S&P 500 also holds, across 154 positions, with the top ten at 60.2%. It sat 4.1% below its high of Oct 6, 2026 on Oct 28, 2026.

Questions people ask

Are IBB and VOOG in the same category?: IBB is a thematic ETF and VOOG is a stock ETF, so they do different jobs. The table compares what both publish: return, cost and holdings.
Which returned more over the last year, IBB or VOOG?: In the year to Oct 28, 2026, with distributions reinvested, IBB returned +37.5% and VOOG +12.1%.
Which is cheaper, IBB or VOOG?: VOOG is cheaper, by 0.39 percentage points a year. That is about $39 on $10,000 held for a year. Fees come from each fund's prospectus.
How much do IBB and VOOG overlap with the S&P 500?: By their latest filed holdings, 40% of IBB and 100% of VOOG by weight is stocks the S&P 500 already holds.

Other comparisons

IBB vs MGK IBB vs VONG IBB vs ONEQ FBCG vs IBB VOOG vs XBI AIRR vs VOOG GDX vs VOOG LYTE vs VOOG

Where to next

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

Sources and dates

IBB filings on SEC EDGAR ↗

IBB prospectus with the expense ratio (SEC) ↗

iShares page for IBB ↗

VOOG filings on SEC EDGAR ↗

VOOG prospectus with the expense ratio (SEC) ↗

Vanguard page for VOOG ↗

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, IBB against VOOG, data as of Oct 28, 2026. https://etfiq.com/compare/any/ibb-vs-voog

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