Data as of Sep 4, 2026. Both funds on the fields they both publish, from the same sources.
IGV vs VOO
iShares Expanded Tech-Software Sector ETF and Vanguard 500 Index Fund.
What they hold in common
By the books each fund has filed, IGV and VOO hold 8% of their money in the same securities at the same weight.
| Holding | IGV | VOO |
|---|---|---|
| Microsoft Corp. | 8.08% | 4.31% |
| Palo Alto Networks, Inc. | 10.38% | 0.43% |
| Palantir Technologies, Inc. | 7.71% | 0.42% |
| Oracle Corp. | 6.26% | 0.39% |
| Crowdstrike Holdings, Inc. | 7.29% | 0.30% |
| AppLovin Corp. | 4.76% | 0.21% |
| Salesforce, Inc. | 4.81% | 0.20% |
| Cadence Design Systems, Inc. | 3.92% | 0.16% |
| ServiceNow, Inc. | 3.87% | 0.16% |
| Fortinet, Inc. | 3.62% | 0.15% |
| Datadog, Inc. | 3.26% | 0.13% |
| Synopsys, Inc. | 3.23% | 0.13% |
| Only in IGV | Only in VOO |
|---|---|
| Strategy, Inc. 1.09% | NVIDIA Corp 7.53% |
| Zoom Communications, Inc. 0.87% | Apple Inc 6.61% |
| Zscaler, Inc. 0.55% | Amazon.com Inc 3.63% |
| Nutanix, Inc. 0.51% | Alphabet Inc 3.26% |
| Rubrik, Inc. 0.49% | Broadcom Inc 2.78% |
| Dynatrace, Inc. 0.49% | Alphabet Inc 2.60% |
| Atlassian Corp. 0.47% | Micron Technology Inc 2.02% |
| Samsara, Inc. 0.46% | Meta Platforms Inc 1.92% |
Weight overlap is an ETFIQ calculation: for every security both funds hold, the smaller of the two weights, summed. Above 50%, holding both is close to holding one of them twice. Holdings as filed for Jun 30, 2026.
| IGV iShares Expanded Tech-Software Sector ETF | VOO Vanguard 500 Index Fund | |
|---|---|---|
| Where it sits | Themes desk | Core fund |
| Issuer | iShares | Vanguard |
| What it is | Cloud and software | S&P 500 |
| Total return, 1 year | −2.1% | +20.1% |
| S&P 500 over the same days | +20.0% | +20.0% |
| Gap to the S&P 500 | −22.1 pts | +0.1 pts |
| Expense ratio | not published | 0.03% |
| Already in the S&P 500 | 83.2% | 100.0% |
| Holdings | 107 | 506 |
IGV in plain words
By weight, 83% of IGV's portfolio is stocks that are also in the S&P 500; its active share against the S&P 500 is 92%. The top ten holdings are 61% of the fund across 107 positions, as filed for Jun 30, 2026. Over the year to Sep 4, 2026 the fund returned −2.1% with distributions reinvested against +20.0% for the S&P 500, so a holder was behind by 22.1 pts. It sits 11.2% below its all-time high of Sep 22, 2025.
VOO in plain words
VOO is a index equity fund tracking S&P 500. Over the year to Sep 4, 2026 it returned +20.1% with distributions reinvested, against +20.0% for the S&P 500 and +25.6% for the Nasdaq-100. The prospectus expense ratio is 0.03% a year. By its holdings filed for Jun 30, 2026, 100% of the fund by weight is stocks the S&P 500 also holds, across 506 positions, with the top ten at 36.5%.
Questions people ask
- Which returned more over the last year, IGV or VOO?
- In the year to Sep 4, 2026, with distributions reinvested, IGV returned −2.1% and VOO returned +20.1%, so VOO returned more. One year is one year; the longer windows are in the table.
- How much do IGV and VOO overlap with the S&P 500?
- By their latest filed holdings, 83% of IGV and 100% of VOO by weight is stocks the S&P 500 already holds. Between the two funds, 8% of their books are the same securities at the same weight.
- Are IGV and VOO the same kind of fund?
- No. IGV is a thematic ETF and VOO is an index ETF, so they are built for different jobs. The table compares what both publish: return, cost and what each actually holds.
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Where these figures came from
ETFIQ links to the documents behind every figure. It is not affiliated with any issuer, and a link is not an endorsement.
Cite this page. ETFIQ, IGV against VOO, data as of Sep 4, 2026. https://etfiq.com/compare/any/IGV-VOO.html Free to use with attribution; the underlying files are at Open data.
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