ADPT vs IBB: Correlation
Adaptive Biotechnologies Corporation (ADPT) and iShares Biotechnology ETF (IBB) show a moderate relationship: their 3-year correlation of weekly returns is 0.48.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are ADPT and IBB?
Across a 3-year window, the weekly returns of ADPT and IBB correlate at 0.48, moderate. Little has changed lately, as the 1-year reading of 0.44 lands near the 3-year figure. Stretching to 5 years gives 0.58, with an annualized covariance of 689.1 %².
Among the 12 assets we track against ADPT, IBB ranks #4 by 3-year correlation. Correlation aside, the last 12 months split them widely, with ADPT ahead by 48.5 points (+103.9% versus +55.4%). Risk is not evenly split, since ADPT carries 3.4 times the volatility of the other side.
How is this computed?
Pearson correlation on weekly returns: ρ(A,B) = cov(rA, rB) / (σA · σB), over windows of 52, 156 and 260 weeks. Covariance is annualized (×52) and expressed in %². Full definitions on the methodology page.
ADPT vs IBB: side by side
| ADPT (Adaptive Biotechnologies Corporation) | IBB (iShares Biotechnology ETF) | |
|---|---|---|
| 1-year return | +103.9% | +55.4% |
| 5-year return | -26.1% | +26.6% |
| Volatility (ann.) | 69.8% | 20.7% |
| Beta vs S&P 500 | 1.40 | 0.81 |
| Max drawdown (3Y) | -65.8% | -24.9% |
| Market cap | $4.2B | – |
| P/E (trailing) | – | – |
| Dividend yield | 0.00% | 0.22% |
| Expense ratio | – | 0.44% |
| Assets under management | – | $9.2B |
| Sector / category | US Listed | ETF · Thematic |
IBB, iShares's Health fund, carries $9.2B under management, 235 holdings, a 0.44% expense ratio, a 0.22% trailing dividend yield.
Year-by-year returns
| Year | ADPT | IBB |
|---|---|---|
| 2022 | -72.8% | -13.7% |
| 2023 | -35.9% | +3.8% |
| 2024 | +22.3% | -2.4% |
| 2025 | +170.9% | +28.0% |
| 2026 | +62.8% | +27.4% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Fund exposure
Keep in mind that IBB holds ADPT at a 0.28% weight, which makes a slice of this correlation mechanical rather than coincidental.
Are ADPT and IBB good diversifiers for each other?
A fair diversifier. At 0.48, enough of each asset's movement is its own that the pair has smoothed outcomes historically.
FAQ
What is the correlation between ADPT and IBB?
As of 2026-08-27, the correlation of weekly returns between ADPT and IBB is 0.48 over 3 years, 0.44 over 1 year and 0.58 over 5 years.
Is IBB a good diversifier for ADPT?
A fair diversifier. At 0.48, enough of each asset's movement is its own that the pair has smoothed outcomes historically.
What does a correlation of 0.48 mean?
Correlation ranges from −1 to +1. Values near +1 mean two assets move together, near 0 that they move independently, and negative values that they tend to move in opposite directions. It measures co-movement, not performance.
Use this data
$ curl https://www.pairbook.io/api/v1/pairs/adpt-vs-ibb.json
Embed this badge (it refreshes with the data), with attribution:
[](https://www.pairbook.io/pair/adpt-vs-ibb/)
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Related comparisons
Hubs: ADPT correlations · IBB correlations
