IBB vs KURA: Correlation
Measured on weekly returns over the past three years, iShares Biotechnology ETF (IBB) and Kura Oncology, Inc. (KURA) carry a correlation of 0.56, a moderate link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are IBB and KURA?
Over the past 3 years, IBB and KURA moved with a correlation of 0.56, which is moderate. Recent behaviour matches the longer record: 0.50 over 1 year against 0.56 over 3. Over 5 years the correlation is 0.50, and the annualized covariance of weekly returns is 695.1 %².
By 3-year correlation, KURA places #57 of the 168 assets tracked against IBB. The trailing year gives KURA the advantage: +55.4% versus +67.7%, a 12.3-point spread. One caveat on sizing: KURA is 2.9 times as volatile as the other leg, so an equal-dollar split is far from equal-risk.
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 KURA: side by side
| IBB (iShares Biotechnology ETF) | KURA (Kura Oncology, Inc.) | |
|---|---|---|
| 1-year return | +55.4% | +67.7% |
| 5-year return | +26.6% | -30.6% |
| Volatility (ann.) | 20.7% | 59.8% |
| Beta vs S&P 500 | 0.81 | 1.61 |
| Max drawdown (3Y) | -24.9% | -76.5% |
| Market cap | – | $1.2B |
| 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 is a Health fund from iShares: $9.2B under management, 235 holdings, a 0.44% expense ratio, a 0.22% trailing dividend yield.
Year-by-year returns
| Year | IBB | KURA |
|---|---|---|
| 2022 | -13.7% | -11.4% |
| 2023 | +3.8% | +15.9% |
| 2024 | -2.4% | -39.4% |
| 2025 | +28.0% | +19.3% |
| 2026 | +27.4% | +26.9% |
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 KURA at a 0.08% weight, which makes a slice of this correlation mechanical rather than coincidental.
Are IBB and KURA good diversifiers for each other?
Only partially. A correlation of 0.56 means IBB and KURA share most of their swings. Pairing them dampens volatility somewhat, but it will not protect against a common drawdown.
FAQ
What is the correlation between IBB and KURA?
Using weekly returns as of 2026-08-27: 0.56 over 3 years, with 0.50 over the last year and 0.50 over 5 years.
Is KURA a good diversifier for IBB?
Only partially. A correlation of 0.56 means IBB and KURA share most of their swings. Pairing them dampens volatility somewhat, but it will not protect against a common drawdown.
What does a correlation of 0.56 mean?
A reading of 0.56 sits on a scale from −1 (opposite moves) through 0 (unrelated) to +1 (identical moves). Correlation captures direction, not magnitude or performance.
Use this data
$ curl https://www.pairbook.io/api/v1/pairs/ibb-vs-kura.json
Markdown for the live badge, attribution link included:
[](https://www.pairbook.io/pair/ibb-vs-kura/)
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Related comparisons
Hubs: IBB correlations · KURA correlations
