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IYZ vs VOO: Differences, Returns & Fees

IYZ and VOO hold 2% of their weight in the same names, and IYZ returned +31.6% over the year. Net assets: $1.1bn on Oct 9, 2026 for iShares U.S. Telecommunications ETF, and $1.0tn on Sep 30, 2026 for Vanguard S&P 500 ETF.

VOO costs 0.34 points a year less; their one-year returns differ by 14.3 points; VOO is far larger, $1.0tn against $1.1bn.

IYZ vs VOO: Differences, Returns & Fees
IYZVOO
Expense ratio0.37%0.03%
Net assets, as of Sep 30, 2026$1.1bn$1.0tn
Total return, 1 year+31.6%+17.3%
What it tracksRussell 1000 Telecommunications RIC 22S&P 500 Index
Holdings in common2%
Top ten holdings, share of the fund71.3%37.8%
Below its high6.4%, high on Jun 2, 2026

Holdings in common uses holdings dated Aug 31, 2026 and Oct 9, 2026.

+31.6%
IYZ total return, 1 year
+17.3%
VOO total return, 1 year
0.37%
IYZ expense ratio
0.03%
VOO expense ratio

What they hold in common

By the books each fund has filed, IYZ and VOO hold 2% of their money in the same securities at the same weight. Above 50%, holding both is close to holding one of them twice. Holdings dated Aug 31, 2026 and Oct 9, 2026.

half

2% in common

Positions both hold, largest shared weight first
Holding IYZ VOO
CISCO SYSTEMS INC 24.08% 0.66%
VERIZON COMMUNICATIONS INC 9.46% 0.32%
ARISTA NETWORKS 12.31% 0.31%
AT&T 3.93% 0.27%
COMCAST CLASS A 2.98% 0.14%
T MOBILE US INC 2.96% 0.13%
MOTOROLA SOLUTIONS INC 3.30% 0.12%
LUMENTUM HOLDINGS 3.82% 0.11%
CIENA 4.12% 0.08%
CHARTER COMMUNICATIONS CLASS A 2.10% 0.03%
ECHOSTAR CLASS A 2.81% 0.02%
Only in IYZ
SPACE EXPLORATION TECHNOLOGIES COR 3.94%
UBIQUITI 3.27%
VIAVI SOLUTIONS 3.10%
ROKU CLASS A 2.79%
APPLIED OPTOELECTRONICS 2.69%
GLOBALSTAR VOTING 2.68%
IRIDIUM COMMUNICATIONS 2.64%
MILLICOM INTERNATIONAL CELLULAR 2.26%
Only in VOO
NVIDIA Corp 8.09%
Apple Inc 7.04%
Microsoft Corp 5.70%
Amazon.com Inc 3.85%
Alphabet Inc 3.01%
Broadcom Inc 2.65%
Alphabet Inc 2.40%
Meta Platforms Inc 1.90%

Check overlap with more funds →

On the same fields

IYZ
iShares U.S. Telecommunications ETF
VOO
Vanguard S&P 500 ETF
Where it sits Stock ETF Stock ETF
Issuer iShares Vanguard
What it is Tracks an index Tracks the S&P 500
Total return, 1 year +31.6% +17.3%
Its benchmark over the same days not published +17.3% (IVV)
Gap to its benchmark not available 0.0 pts vs IVV
Expense ratio 0.37% 0.03%
Already in the S&P 500 71.2% 99.7%
Holdings 23 507
Net assets, IYZ as of Oct 9, 2026 and VOO as of Sep 30, 2026 $1.1bn $1.0tn

IYZ and VOO on the fields both publish, as of Oct 9, 2026. Source: ETFIQ.

About IYZ

IYZ tracks an index. Over the year to Oct 9, 2026 it returned +31.6% with distributions reinvested. The prospectus expense ratio is 0.37% a year. By its holdings published by its issuer for Oct 9, 2026, 71% of the fund by weight is stocks the S&P 500 also holds, across 23 positions, with the top ten at 71.3%. It sat 6.4% below its high of Jun 2, 2026 on Oct 9, 2026.

About VOO

VOO tracks the S&P 500. Over the year to Oct 9, 2026 it returned +17.3% with distributions reinvested, against +17.3% for its benchmark, the S&P 500 Index. The prospectus expense ratio is 0.03% a year. By its holdings published by its issuer as of Aug 31, 2026, 100% of the fund by weight is stocks the S&P 500 also holds, across 507 positions, with the top ten at 37.8%.

Questions people ask

Which returned more over the last year, IYZ or VOO?
In the year to Oct 9, 2026, with distributions reinvested, IYZ returned +31.6% and VOO +17.3%.
Which is cheaper, IYZ or VOO?
VOO is cheaper, by 0.34 percentage points a year. That is about $34 on $10,000 held for a year. Fees come from each fund's prospectus.
How much do IYZ and VOO overlap with the S&P 500?
By their latest filed holdings, 71% of IYZ and 100% of VOO by weight is stocks the S&P 500 already holds.
Other comparisons
IYZ vs SPYIYZ vs USMVIYZ vs MTUMIYZ vs SPHQMODL vs VOOQLC vs VOOVOO vs VOTESPHB vs VOO
IYZ on its own →VOO on its own →Hold both: look the portfolio through →Rankings →Standards and sources →
Where these figures came from
IYZ filings on SEC EDGAR ↗IYZ prospectus with the expense ratio (SEC) ↗iShares page for IYZ ↗VOO filings on SEC EDGAR ↗VOO prospectus with the expense ratio (SEC) ↗Vanguard page for VOO ↗

ETFIQ links to the documents behind every figure; a link is not an endorsement. 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, IYZ against VOO, data as of Oct 9, 2026. https://etfiq.com/compare/any/iyz-vs-voo

Open data

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