ARKG vs IBB: holdings overlap, shared companies and scores
As of October 9, 2026, ARKG and IBB overlap 11.6% by weight. ARK Genomic Revolution ETF (ARKG): Genomics and biotech stocks. iShares Biotechnology ETF (IBB): U.S. biotechnology stocks.
Updated October 9, 2026
Where IBB trades against its own history
IBB trades at 27.2 times earnings, against its own median of 21.6, and is more expensive than 83% of its own last 7 years.
What moved ARKG and IBB this week
ARKG fell 5.0% in the week to October 9, 2026. The holdings that moved it most were Twist Bioscience (−15.3%), 10X Genomics (−13.7%) and Tempus AI (−7.4%); Prime Medicine (+33.9%) pushed the other way.
IBB rose 0.6% in the week to October 9, 2026. The holdings that moved it most were Moderna (+18.4%), Gilead Sciences (+4.4%) and Amgen (+2.9%); Argenx SE (−10.2%) pushed the other way.
What do ARKG and IBB each hold?
What's inside ARKG: AI 13%.
59% of ARKG is its ten largest holdings.
What's inside IBB: AI 1%.
50% of IBB is its ten largest holdings.
How much do ARKG and IBB overlap? 11.6% by weight
As of October 9, 2026, ARKG and IBB overlap 11.6% by weight.
79% of ARKG is already inside IBB.
12% of IBB is already inside ARKG.
ARKG holds 33 companies and IBB holds 240; 22 are in both.
Computed by ETF Copilot from both funds' holdings rather than quoted from a data provider, and rebuilt nightly.
How does ETF Copilot score ARKG and IBB? 4.0 and 4.0 out of 10
As of October 9, 2026, ETF Copilot scores ARKG 4.0 out of 10 and IBB 4.0 out of 10.
They differ most on Risk: ARKG 0.2 and IBB 2.7.
The five factor scores behind them are set out below, 0–10 and higher is better, ranked against every US equity ETF we track.
| Factor | ARKG | IBB |
|---|---|---|
| Growth | 8.1 | 9.4 |
| Risk | 0.2 | 2.7 |
| Quality | 0.1 | 0.9 |
| Return | 5.2 | 3.8 |
IBB is the cheaper of the two at 0.44% a year
As of October 9, 2026, ARKG charges 0.75% a year and holds $2.1B in assets across 33 positions.
As of October 9, 2026, IBB charges 0.44% a year, yields 0.19% and holds $10.4B in assets across 240 positions.
| Measure | ARKG | IBB |
|---|---|---|
| Expense ratio | 0.75% | 0.44% |
| Dividend yield | — | 0.19% |
| Assets under management | $2.1B | $10.4B |
| Holdings | 33 | 240 |
Expense ratio, dividend yield and assets under management are reported by the fund and refreshed daily. Every other figure on this page is computed by ETF Copilot.
Compare with similar funds
Cite this
ETF Copilot, “ARKG vs IBB holdings overlap and scores”, as of October 9, 2026.
https://etf-copilot.com/compare/arkg-vs-ibb
ETF Copilot Pro unlocks ARKG vs IBB prices and holdings.
Try Pro free →