Are AOR and IBB in the same category?

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

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

In the year to Oct 28, 2026, with distributions reinvested, AOR returned +7.8% and IBB +37.5%.

Which is cheaper, AOR or IBB?

AOR is cheaper, by 0.29 percentage points a year. That is about $29 on $10,000 held for a year. Fees come from each fund's prospectus.

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

By their latest filed holdings, 0% of AOR and 40% of IBB by weight is stocks the S&P 500 already holds.

Data as of Oct 28, 2026.

Across categories

AOR vs IBB: Differences, Returns & Fees

Share on X Download as PDF

Over the year to Oct 28, 2026, AOR returned +7.8% to IBB's +37.5%, and AOR charges 0.15% to IBB's 0.44%.

askIQ about this page

askIQ about AOR and IBB

Net assets: $3.9bn on Oct 28, 2026 for iShares Core 60/40 Balanced Allocation ETF, and $11.0bn on Oct 27, 2026 for iShares Biotechnology ETF.

AOR on its own →IBB on its own →

At a glance

+7.8%

AOR total return, 1 year

+37.5%

IBB total return, 1 year

0.15%

AOR expense ratio

0.44%

IBB expense ratio

Pair scorecard

AOR costs 0.29 points a year less; their one-year returns differ by 29.7 points; IBB is 2.8 times larger.

AOR vs IBB: Differences, Returns & Fees
Measure	AOR	IBB
Return
Measure	AOR	IBB
Total return, 1 year	+7.8%	+37.5%
Benchmark
Measure	AOR	IBB
What it tracks	60/40 Balanced Allocation	Biotech
Cost and size
Measure	AOR	IBB
Expense ratio	0.15%	0.44%
Net assets, as of Oct 27, 2026	$3.9bn	$11.0bn
Active share vs the S&P 500		99%
Holdings
Measure	AOR	IBB
Holdings in common	0%
Top ten holdings, share of the fund	99.9%	50%

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

What they share

By the books each fund has filed, AOR and IBB hold 0% of their money in the same securities at the same weight. Holdings dated Oct 27, 2026.

50%

0 half 100%

half

0% in common

Positions both hold · largest shared weight first AOR IBB

Only in one fund ↓

Only in AOR

ISHARES CORE S&P ETF TRUST 35.70%

ISHARES CORE UNIV USD BOND ETF 32.15%

ISHARES CORE MSCI INT DEVEL ETF 17.10%

ISHARES CORE MSCI EMERGING MARKETS 6.34%

iShares Core Intl Aggregate Bnd ET 5.81%

ISHARES CORE S&P MID-CAP ETF 1.89%

ISHARES CORE S&P SMALL-CAP ETF 0.92%

Only in IBB

GILEAD SCIENCES 8.56%

AMGEN INC 8.20%

VERTEX PHARMACEUTICALS 7.53%

REGENERON PHARMACEUTICALS 5.64%

MODERNA 5.29%

NATERA 3.85%

ARGENX SE ADR 3.42%

ILLUMINA INC 2.93%

Check overlap with more funds →

Side by side

AOR iShares Core 60/40 Balanced Allocation ETF IBB iShares Biotechnology ETF

Where it sits Allocation ETF Thematic ETF

Issuer iShares iShares

What it is Tracks an index of 60/40 Balanced Allocation Biotech

Total return, 1 year +7.8% +37.5%

Its benchmark over the same days +13.4% (ACWI) not measured

Gap to its benchmark −5.6 pts vs ACWI not measured

Expense ratio 0.15% 0.44%

Already in the S&P 500 0.0% 40.2%

Holdings 7 245

Net assets, AOR as of Oct 28, 2026 and IBB as of Oct 27, 2026 $3.9bn $11.0bn

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

Alert

About each fund

AOR

AOR tracks an index of 60/40 Balanced Allocation. Over the year to Oct 28, 2026 it returned +7.8% with distributions reinvested, against +13.4% for its benchmark, the MSCI All Country World Index. The prospectus expense ratio is 0.15% a year. By its holdings published by its issuer for Oct 27, 2026, 0% of the fund by weight is stocks the S&P 500 also holds, across 7 positions, with the top ten at 99.9%.

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.

Questions people ask

Are AOR and IBB in the same category?: AOR is an allocation ETF and IBB is a thematic ETF, so they do different jobs. The table compares what both publish: return, cost and holdings.
Which returned more over the last year, AOR or IBB?: In the year to Oct 28, 2026, with distributions reinvested, AOR returned +7.8% and IBB +37.5%.
Which is cheaper, AOR or IBB?: AOR is cheaper, by 0.29 percentage points a year. That is about $29 on $10,000 held for a year. Fees come from each fund's prospectus.
How much do AOR and IBB overlap with the S&P 500?: By their latest filed holdings, 0% of AOR and 40% of IBB by weight is stocks the S&P 500 already holds.

Other comparisons

AOR vs XBI AOR vs BITO AOR vs CGBL AOR vs PDBC CGBL vs IBB FXI vs IBB IBB vs KRE EDV vs IBB

Where to next

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

Sources and dates

AOR and IBB filings on SEC EDGAR ↗

AOR prospectus with the expense ratio (SEC) ↗

iShares page for AOR ↗

IBB prospectus with the expense ratio (SEC) ↗

iShares page for IBB ↗

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

Open data →

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