IBB vs KYMR: Correlation
How closely do iShares Biotechnology ETF (IBB) and Kymera Therapeutics, Inc. (KYMR) trade together? Their weekly returns over three years give a correlation of 0.57, which is moderate.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are IBB and KYMR?
Over the past 3 years, IBB and KYMR moved with a correlation of 0.57, which is moderate. Lately the two have drifted apart, with the 1-year correlation at 0.38 versus 0.57 over 3 years. Over 5 years the correlation is 0.58, and the annualized covariance of weekly returns is 877.8 %².
Among the 168 assets we track against IBB, KYMR ranks #50 by 3-year correlation. The last year tells two different stories: KYMR led by 129.1 percentage points, +55.4% for IBB against +184.5% for KYMR. Risk is not evenly split, since KYMR carries 3.6 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.
IBB vs KYMR: side by side
| IBB (iShares Biotechnology ETF) | KYMR (Kymera Therapeutics, Inc.) | |
|---|---|---|
| 1-year return | +55.4% | +184.5% |
| 5-year return | +26.6% | +96.7% |
| Volatility (ann.) | 20.7% | 74.1% |
| Beta vs S&P 500 | 0.81 | 2.12 |
| Max drawdown (3Y) | -24.9% | -59.8% |
| Market cap | – | $9.9B |
| P/E (trailing) | – | – |
| Dividend yield | 0.22% | 0.00% |
| Expense ratio | 0.44% | – |
| Assets under management | $9.2B | – |
| Sector / category | ETF · Thematic | US Listed |
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 | IBB | KYMR |
|---|---|---|
| 2022 | -13.7% | -60.7% |
| 2023 | +3.8% | +2.0% |
| 2024 | -2.4% | +58.0% |
| 2025 | +28.0% | +93.4% |
| 2026 | +27.4% | +54.5% |
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 KYMR at a 0.62% weight, which makes a slice of this correlation mechanical rather than coincidental.
Are IBB and KYMR good diversifiers for each other?
To a limited degree. At 0.57 the two still catch most of the same waves, so the pair smooths returns a little without insulating either from a shared selloff.
FAQ
What is the correlation between IBB and KYMR?
Using weekly returns as of 2026-08-27: 0.57 over 3 years, with 0.38 over the last year and 0.58 over 5 years.
Is KYMR a good diversifier for IBB?
To a limited degree. At 0.57 the two still catch most of the same waves, so the pair smooths returns a little without insulating either from a shared selloff.
What does a correlation of 0.57 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/ibb-vs-kymr.json
Embed this badge (it refreshes with the data), with attribution:
[](https://www.pairbook.io/pair/ibb-vs-kymr/)
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Related comparisons
Hubs: IBB correlations · KYMR correlations
