ECO vs INSW: Correlation
Okeanis Eco Tankers Corp. (ECO) and International Seaways, Inc. (INSW) show a strong relationship: their 3-year correlation of weekly returns is 0.68.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are ECO and INSW?
Over the past 3 years, ECO and INSW moved with a correlation of 0.68, which is strong. The relationship has been stable: the 1-year correlation (0.76) sits close to the 3-year figure. Over 5 years the correlation is n/a, and the annualized covariance of weekly returns is 1113.3 %².
Among the 13 assets we track against ECO, INSW ranks #5 by 3-year correlation. Their recent paths diverged sharply: over the last 12 months ECO outperformed by 39.5 percentage points (+189.8% for ECO against +150.3% for INSW).
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.
ECO vs INSW: side by side
| ECO (Okeanis Eco Tankers Corp.) | INSW (International Seaways, Inc.) | |
|---|---|---|
| 1-year return | +189.8% | +150.3% |
| 5-year return | n/a | +861.9% |
| Volatility (ann.) | 44.3% | 36.8% |
| Beta vs S&P 500 | 0.52 | 0.50 |
| Max drawdown (3Y) | -46.1% | -50.4% |
| Market cap | $2.6B | $4.9B |
| P/E (trailing) | 5.8 | 6.0 |
| Dividend yield | 0.00% | 0.51% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | ECO | INSW |
|---|---|---|
| 2022 | – | +162.5% |
| 2023 | – | +42.9% |
| 2024 | -11.7% | -10.9% |
| 2025 | +64.2% | +45.0% |
| 2026 | +128.8% | +123.1% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are ECO and INSW good diversifiers for each other?
Only partially. A correlation of 0.68 means ECO and INSW 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 ECO and INSW?
Using weekly returns as of 2026-08-27: 0.68 over 3 years, with 0.76 over the last year and n/a over 5 years.
Is INSW a good diversifier for ECO?
Only partially. A correlation of 0.68 means ECO and INSW share most of their swings. Pairing them dampens volatility somewhat, but it will not protect against a common drawdown.
What does a correlation of 0.68 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/eco-vs-insw.json
Markdown for the live badge, attribution link included:
[](https://www.pairbook.io/pair/eco-vs-insw/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: ECO correlations · INSW correlations
