ATRA vs STNG: Correlation
Atara Biotherapeutics, Inc. (ATRA) and Scorpio Tankers Inc. (STNG) show a negative relationship: their 3-year correlation of weekly returns is -0.21.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are ATRA and STNG?
Across a 3-year window, the weekly returns of ATRA and STNG correlate at -0.21, negative, meaning they tend to move in opposite directions. The past 12 months show a weaker link (-0.34) than the 3-year average (-0.21). Stretching to 5 years gives -0.14, with an annualized covariance of -1204.5 %².
Among the 13 assets we track against ATRA, STNG sits near the bottom by co-movement, at rank #12. The last year tells two different stories: STNG led by 83.4 percentage points, -25.1% for ATRA against +58.3% for STNG. Note the risk asymmetry: ATRA runs 4.2 times the annualized volatility of the other leg, so equal-weighting the two is not an equal-risk position.
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.
ATRA vs STNG: side by side
| ATRA (Atara Biotherapeutics, Inc.) | STNG (Scorpio Tankers Inc.) | |
|---|---|---|
| 1-year return | -25.1% | +58.3% |
| 5-year return | -97.5% | +454.0% |
| Volatility (ann.) | 153.2% | 36.8% |
| Beta vs S&P 500 | 1.17 | 0.42 |
| Max drawdown (3Y) | -90.7% | -61.0% |
| Market cap | $0.1B | $3.9B |
| P/E (trailing) | – | 4.7 |
| Dividend yield | 0.00% | 2.30% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | ATRA | STNG |
|---|---|---|
| 2022 | -79.2% | +325.5% |
| 2023 | -84.4% | +15.4% |
| 2024 | +3.8% | -16.3% |
| 2025 | +35.9% | +5.3% |
| 2026 | -48.9% | +55.0% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are ATRA and STNG good diversifiers for each other?
Yes: at -0.21, the two have gone their own ways historically, which is what genuine diversification looks like.
FAQ
What is the correlation between ATRA and STNG?
The ATRA/STNG correlation stands at -0.21 on a 3-year window (1 year: -0.34, 5 years: -0.14), computed from weekly returns as of 2026-08-27.
Is STNG a good diversifier for ATRA?
Yes: at -0.21, the two have gone their own ways historically, which is what genuine diversification looks like.
What does a correlation of -0.21 mean?
A reading of -0.21 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/atra-vs-stng.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/atra-vs-stng/)
No key needed, free to use. Full endpoint list in the API documentation.
Related comparisons
Hubs: ATRA correlations · STNG correlations
