Data as of Sep 13, 2026. Both funds on the fields they both publish, from the same sources.
IBB vs IWD: how they differ
IBB and IWD hold 2% of their weight in the same names, and IBB returned more over the year.
iShares Biotechnology ETF and iShares Russell 1000 Value ETF.
What they hold in common
By the books each fund has filed, IBB and IWD hold 2% of their money in the same securities at the same weight.
| Holding | IBB | IWD |
|---|---|---|
| GILEAD SCIENCES | 7.44% | 0.48% |
| VERTEX PHARMACEUTICALS | 7.94% | 0.35% |
| REGENERON PHARMACEUTICALS | 5.92% | 0.22% |
| AMGEN INC | 7.85% | 0.16% |
| MODERNA | 3.67% | 0.13% |
| BLK CSH FND TREASURY SL AGENCY | 0.12% | 0.13% |
| BIOGEN | 2.33% | 0.09% |
| ILLUMINA INC | 2.25% | 0.08% |
| UNITED THERAPEUTICS | 1.53% | 0.06% |
| INCYTE CORP | 1.81% | 0.05% |
| ROIVANT SCIENCES LTD | 1.56% | 0.05% |
| USD CASH | 0.05% | 0.12% |
| Only in IBB | Only in IWD |
|---|---|
| ARGENX SE ADR 3.78% | AMAZON.COM INC 6.04% |
| NATERA 3.30% | APPLE 5.83% |
| REVOLUTION MEDICINES 2.87% | MICROSOFT 4.93% |
| ALNYLAM PHARMACEUTICALS 2.44% | BERKSHIRE HATHAWAY INC CLASS B 2.54% |
| INSMED 2.02% | JPMORGAN CHASE & CO 2.54% |
| BEONE MEDICINES AG 2.01% | EXXONMOBIL HOLDINGS CORP 1.85% |
| GENMAB SPONSORED ADR 1.25% | JOHNSON & JOHNSON 1.73% |
| ASCENDIS PHARMA 1.20% | INTEL CORPORATION 1.23% |
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 Sep 10, 2026.
| IBB iShares Biotechnology ETF | IWD iShares Russell 1000 Value ETF | |
|---|---|---|
| Where it sits | Core index fund | Core index fund |
| Issuer | iShares | iShares |
| What it is | Biotechnology | Russell 1000 value |
| Total return, 1 year | +41.5% | +27.4% |
| S&P 500 over the same days | +17.5% | +17.5% |
| Gap to the S&P 500 | +24.0 pts | +9.9 pts |
| Expense ratio | 0.44% | 0.18% |
| Already in the S&P 500 | 35.6% | 90.2% |
| Holdings | 233 | 814 |
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 Sep 10, 2026, 36% of the fund by weight is stocks the S&P 500 also holds, across 233 positions, with the top ten at 47.5%. It sat 6.5% below its high of Aug 19, 2026 on Sep 11, 2026.
IWD in plain words
IWD is an index equity fund tracking the Russell 1000 value. Over the year to Sep 11, 2026 it returned +27.4% with distributions reinvested, against +17.5% for the S&P 500 and +23.0% for the Nasdaq-100. The prospectus expense ratio is 0.18% a year. By its holdings filed for Sep 10, 2026, 90% of the fund by weight is stocks the S&P 500 also holds, across 814 positions, with the top ten at 29.0%.
Questions people ask
- Which returned more over the last year, IBB or IWD?
- In the year to Sep 13, 2026, with distributions reinvested, IBB returned +41.5% and IWD returned +27.4%, so IBB returned more. One year is one year; the longer windows are in the table.
- Which is cheaper, IBB or IWD?
- IBB charges 0.44% a year and IWD charges 0.18%, so IWD is cheaper. Fees come from each fund's prospectus.
- How much do IBB and IWD overlap with the S&P 500?
- By their latest filed holdings, 36% of IBB and 90% of IWD 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.
Other comparisons
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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 IWD, data as of Sep 13, 2026. https://etfiq.com/compare/any/ibb-vs-iwd Free to use with attribution; the underlying files are at Open data.
A comparison is not a recommendation. Standards and sources