INSW vs STNG: Correlation
How closely do International Seaways, Inc. (INSW) and Scorpio Tankers Inc. (STNG) trade together? Their weekly returns over three years give a correlation of 0.81, which is very strong.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are INSW and STNG?
Over the past 3 years, INSW and STNG moved with a correlation of 0.81, which is very strong, meaning they move nearly in lockstep. Little has changed lately, as the 1-year reading of 0.81 lands near the 3-year figure. Over 5 years the correlation is 0.73, and the annualized covariance of weekly returns is 1096.1 %².
By 3-year correlation, STNG places #6 of the 21 assets tracked against INSW. The last year tells two different stories: INSW led by 92.0 percentage points, +150.3% for INSW against +58.3% for STNG.
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.
INSW vs STNG: side by side
| INSW (International Seaways, Inc.) | STNG (Scorpio Tankers Inc.) | |
|---|---|---|
| 1-year return | +150.3% | +58.3% |
| 5-year return | +861.9% | +454.0% |
| Volatility (ann.) | 36.8% | 36.8% |
| Beta vs S&P 500 | 0.50 | 0.42 |
| Max drawdown (3Y) | -50.4% | -61.0% |
| Market cap | $4.9B | $3.9B |
| P/E (trailing) | 6.0 | 4.7 |
| Dividend yield | 0.51% | 2.30% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | INSW | STNG |
|---|---|---|
| 2022 | +162.5% | +325.5% |
| 2023 | +42.9% | +15.4% |
| 2024 | -10.9% | -16.3% |
| 2025 | +45.0% | +5.3% |
| 2026 | +123.1% | +55.0% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are INSW and STNG good diversifiers for each other?
No. With a correlation of 0.81, INSW and STNG move nearly in lockstep, so holding both adds very little diversification.
FAQ
What is the correlation between INSW and STNG?
The INSW/STNG correlation stands at 0.81 on a 3-year window (1 year: 0.81, 5 years: 0.73), computed from weekly returns as of 2026-08-27.
Is STNG a good diversifier for INSW?
No. With a correlation of 0.81, INSW and STNG move nearly in lockstep, so holding both adds very little diversification.
What does a correlation of 0.81 mean?
On the −1 to +1 scale, 0.81 describes how much the two returns move together: +1 is lockstep, 0 is independence, negative values mean opposite directions. It says nothing about which performed better.
Use this data
$ curl https://www.pairbook.io/api/v1/pairs/insw-vs-stng.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/insw-vs-stng/)
No key needed, free to use. Full endpoint list in the API documentation.
Related comparisons
Hubs: INSW correlations · STNG correlations
