Data as of Oct 28, 2026.
FNDX vs IBB: Differences, Returns & Fees
Over the year to Oct 28, 2026, FNDX returned +23.9% to IBB's +37.5%, and FNDX charges 0.25% to IBB's 0.44%.
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Net assets: $27.6bn on Aug 31, 2026 for Schwab Fundamental U.S. Large Company ETF, and $11.0bn on Oct 27, 2026 for iShares Biotechnology ETF.
Pair scorecard
FNDX costs 0.19 points a year less; their one-year returns differ by 13.6 points.
| Measure | FNDX | IBB |
|---|---|---|
| Return | ||
| Total return, 1 year | +23.9% | +37.5% |
| Benchmark | ||
| What it tracks | Fundamental U.S. Large Company | Biotech |
| Cost and size | ||
| Expense ratio | 0.25% | 0.44% |
| Net assets, FNDX as of Aug 31, 2026 and IBB as of Oct 27, 2026 | $27.6bn | $11.0bn |
| Active share vs the S&P 500 | 99% | |
| Holdings | ||
| Holdings in common | 2% | |
| Top ten holdings, share of the fund | 21.0% | 50% |
Holdings in common uses holdings dated Aug 31, 2026 and Oct 27, 2026. Method
What they share
By the books each fund has filed, FNDX and IBB hold 2% of their money in the same securities at the same weight. Holdings dated Aug 31, 2026 and Oct 27, 2026.
half
2% in common
Only in one fund ↓
Side by side
FNDX and IBB on the fields both publish, as of Oct 28, 2026. Source: ETFIQ.
Over the year to Oct 28, 2026 it returned +23.9% with distributions reinvested, against +13.1% for its benchmark, the Russell 1000 Index.
FNDX tracks an index of Fundamental U.S. Large Company. The prospectus expense ratio is 0.25% a year. By its holdings filed for Aug 31, 2026, 88% of the fund by weight is stocks the S&P 500 also holds, across 731 positions, with the top ten at 21.0%.
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 FNDX and IBB in the same category?
- FNDX is a stock 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, FNDX or IBB?
- In the year to Oct 28, 2026, with distributions reinvested, FNDX returned +23.9% and IBB +37.5%.
- Which is cheaper, FNDX or IBB?
- FNDX is cheaper, by 0.19 percentage points a year. That is about $19 on $10,000 held for a year. Fees come from each fund's prospectus.
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.
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ETFIQ, FNDX against IBB, data as of Oct 28, 2026. https://etfiq.com/compare/any/fndx-vs-ibb
ETFIQ. (Oct 28, 2026). FNDX against IBB. Retrieved from https://etfiq.com/compare/any/fndx-vs-ibb
[FNDX against IBB (ETFIQ, Oct 28, 2026)](https://etfiq.com/compare/any/fndx-vs-ibb)
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