KNSA vs XBI: Correlation
Measured on weekly returns over the past three years, Kiniksa Pharmaceuticals International, plc - Class A (KNSA) and SPDR S&P Biotech ETF (XBI) carry a correlation of 0.41, a moderate link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are KNSA and XBI?
Across a 3-year window, the weekly returns of KNSA and XBI correlate at 0.41, moderate. The past 12 months show a weaker link (0.07) than the 3-year average (0.41). Stretching to 5 years gives 0.45, with an annualized covariance of 519.5 %².
XBI is one of the assets that tracks KNSA most closely: it ranks #1 out of the 12 assets we track against KNSA. Their recent paths diverged sharply: over the last 12 months KNSA outperformed by 49.6 percentage points (+136.8% for KNSA against +87.2% for XBI). One caveat on sizing: KNSA is 1.7 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.
KNSA vs XBI: side by side
| KNSA (Kiniksa Pharmaceuticals International, plc - Class A) | XBI (SPDR S&P Biotech ETF) | |
|---|---|---|
| 1-year return | +136.8% | +87.2% |
| 5-year return | +550.9% | +28.6% |
| Volatility (ann.) | 46.0% | 27.7% |
| Beta vs S&P 500 | 0.55 | 1.09 |
| Max drawdown (3Y) | -34.1% | -33.0% |
| Market cap | $6.2B | – |
| P/E (trailing) | 79.8 | – |
| Dividend yield | 0.00% | – |
| Sector / category | US Listed | ETF · Thematic |
Year-by-year returns
| Year | KNSA | XBI |
|---|---|---|
| 2022 | +27.3% | -25.9% |
| 2023 | +17.1% | +7.6% |
| 2024 | +12.8% | +1.0% |
| 2025 | +108.5% | +35.9% |
| 2026 | +93.5% | +38.1% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are KNSA and XBI good diversifiers for each other?
A fair diversifier. At 0.41, enough of each asset's movement is its own that the pair has smoothed outcomes historically.
FAQ
What is the correlation between KNSA and XBI?
As of 2026-08-27, the correlation of weekly returns between KNSA and XBI is 0.41 over 3 years, 0.07 over 1 year and 0.45 over 5 years.
Is XBI a good diversifier for KNSA?
A fair diversifier. At 0.41, enough of each asset's movement is its own that the pair has smoothed outcomes historically.
What does a correlation of 0.41 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/knsa-vs-xbi.json
Embed this badge (it refreshes with the data), with attribution:
[](https://www.pairbook.io/pair/knsa-vs-xbi/)
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Related comparisons
Hubs: KNSA correlations · XBI correlations
