Data as of Sep 12, 2026. Both funds on the fields they both publish, from the same sources.
IBB vs VIG: how they differ
IBB and VIG hold 2% of their weight in the same names, and IBB returned more over the year.
iShares Biotechnology ETF and Vanguard Dividend Appreciation Index Fund.
What they hold in common
By the books each fund has filed, IBB and VIG hold 2% of their money in the same securities at the same weight.
| Holding | IBB | VIG |
|---|---|---|
| Amgen, Inc. | 7.84% | 0.84% |
| Gilead Sciences, Inc. | 6.85% | 0.74% |
| Only in IBB | Only in VIG |
|---|---|
| Vertex Pharmaceuticals, Inc. 8.09% | Broadcom Inc 5.21% |
| Regeneron Pharmaceuticals, Inc. 4.91% | Apple Inc 4.10% |
| Argenx SE 3.76% | Microsoft Corp 3.99% |
| Alnylam Pharmaceuticals, Inc. 3.12% | JPMorgan Chase & Co 3.61% |
| Natera, Inc. 2.89% | Eli Lilly & Co 3.36% |
| Revolution Medicines, Inc. 2.78% | Exxon Mobil Corp 2.92% |
| Biogen, Inc. 2.47% | Walmart Inc 2.62% |
| Illumina, Inc. 2.07% | Johnson & Johnson 2.51% |
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 dated Apr 30, 2026 and Jun 30, 2026.
| IBB iShares Biotechnology ETF | VIG Vanguard Dividend Appreciation Index Fund | |
|---|---|---|
| Where it sits | Core index fund | Core index fund |
| Issuer | iShares | Vanguard |
| What it is | Biotechnology | Dividend growth |
| Total return, 1 year | +41.5% | +12.4% |
| S&P 500 over the same days | +17.5% | +17.5% |
| Gap to the S&P 500 | +24.0 pts | −5.1 pts |
| Expense ratio | 0.44% | 0.04% |
| Already in the S&P 500 | 35.6% | 95.7% |
| Holdings | 248 | 332 |
IBB in plain words
IBB is an index equity fund tracking the Biotechnology. Over the year to Sep 11, 2026 it returned +41.5% with distributions reinvested, against +17.5% for the S&P 500 and +23.0% for the Nasdaq-100. The prospectus expense ratio is 0.44% a year. By its holdings filed for Jun 30, 2026, 36% of the fund by weight is stocks the S&P 500 also holds, across 248 positions, with the top ten at 44.8%. It sat 6.5% below its high of Aug 19, 2026 on Sep 11, 2026.
VIG in plain words
VIG is an index equity fund tracking the Dividend growth. Over the year to Sep 11, 2026 it returned +12.4% with distributions reinvested, against +17.5% for the S&P 500 and +23.0% for the Nasdaq-100. The prospectus expense ratio is 0.04% a year. By its holdings filed for Apr 30, 2026, 96% of the fund by weight is stocks the S&P 500 also holds, across 332 positions, with the top ten at 32.7%.
Questions people ask
- Which returned more over the last year, IBB or VIG?
- In the year to Sep 12, 2026, with distributions reinvested, IBB returned +41.5% and VIG returned +12.4%, so IBB returned more. One year is one year; the longer windows are in the table.
- Which is cheaper, IBB or VIG?
- IBB charges 0.44% a year and VIG charges 0.04%, so VIG is cheaper. Fees come from each fund's prospectus.
- How much do IBB and VIG overlap with the S&P 500?
- By their latest filed holdings, 36% of IBB and 96% of VIG by weight is stocks the S&P 500 already holds. Between the two funds, 2% of their books are the same securities at the same weight.
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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, IBB against VIG, data as of Sep 12, 2026. https://etfiq.com/compare/any/IBB-VIG Free to use with attribution; the underlying files are at Open data.
A comparison is not a recommendation. Standards and sources