ADCT vs XBI: Correlation
ADC Therapeutics SA (ADCT) and SPDR S&P Biotech ETF (XBI) show a moderate relationship: their 3-year correlation of weekly returns is 0.51.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are ADCT and XBI?
Across a 3-year window, the weekly returns of ADCT and XBI correlate at 0.51, moderate. Little has changed lately, as the 1-year reading of 0.43 lands near the 3-year figure. Stretching to 5 years gives 0.49, with an annualized covariance of 1642.1 %².
In ADCT's tracked universe of 15 assets, XBI sits right near the top at #1. Their recent paths diverged sharply: over the last 12 months XBI outperformed by 152.4 percentage points (-65.2% for ADCT against +87.2% for XBI). Risk is not evenly split, since ADCT carries 4.2 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.
ADCT vs XBI: side by side
| ADCT (ADC Therapeutics SA) | XBI (SPDR S&P Biotech ETF) | |
|---|---|---|
| 1-year return | -65.2% | +87.2% |
| 5-year return | -96.1% | +28.6% |
| Volatility (ann.) | 116.4% | 27.7% |
| Beta vs S&P 500 | 2.51 | 1.09 |
| Max drawdown (3Y) | -81.9% | -33.0% |
| Market cap | $0.1B | – |
| P/E (trailing) | – | – |
| Dividend yield | 0.00% | – |
| Sector / category | US Listed | ETF · Thematic |
Year-by-year returns
| Year | ADCT | XBI |
|---|---|---|
| 2022 | -81.0% | -25.9% |
| 2023 | -56.8% | +7.6% |
| 2024 | +19.9% | +1.0% |
| 2025 | +77.4% | +35.9% |
| 2026 | -68.3% | +38.1% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are ADCT and XBI good diversifiers for each other?
To a limited degree. At 0.51 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 ADCT and XBI?
Using weekly returns as of 2026-08-27: 0.51 over 3 years, with 0.43 over the last year and 0.49 over 5 years.
Is XBI a good diversifier for ADCT?
To a limited degree. At 0.51 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 0.51 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/adct-vs-xbi.json
Embed this badge (it refreshes with the data), with attribution:
[](https://www.pairbook.io/pair/adct-vs-xbi/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: ADCT correlations · XBI correlations
