JL vs KROS: Correlation
J-Long Group Limited - Class A (JL) and Keros Therapeutics, Inc. (KROS) show a negative relationship: their 3-year correlation of weekly returns is -0.63.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are JL and KROS?
Over the past 3 years, JL and KROS moved with a correlation of -0.63, which is negative, meaning they tend to move in opposite directions. The past 12 months show a tighter link (-0.07) than the 3-year average (-0.63). Over 5 years the correlation is n/a, and the annualized covariance of weekly returns is -25911.1 %².
Out of 58 assets tracked against JL, KROS lands near the bottom at #58. The trailing year gives JL the advantage: -16.4% versus -27.6%, a 11.2-point spread. Note the risk asymmetry: JL runs 8.3 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.
JL vs KROS: side by side
| JL (J-Long Group Limited - Class A) | KROS (Keros Therapeutics, Inc.) | |
|---|---|---|
| 1-year return | -16.4% | -27.6% |
| 5-year return | n/a | -67.0% |
| Volatility (ann.) | 580.0% | 69.9% |
| Beta vs S&P 500 | -1.02 | 0.98 |
| Max drawdown (3Y) | -98.6% | -86.5% |
| Market cap | – | $0.2B |
| P/E (trailing) | 6.5 | – |
| Dividend yield | 0.00% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | JL | KROS |
|---|---|---|
| 2022 | – | -17.9% |
| 2023 | – | -17.2% |
| 2024 | – | -60.2% |
| 2025 | +67.1% | +28.6% |
| 2026 | -20.1% | -44.8% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are JL and KROS good diversifiers for each other?
Yes: at -0.63, the two have gone their own ways historically, which is what genuine diversification looks like.
FAQ
What is the correlation between JL and KROS?
As of 2026-08-27, the correlation of weekly returns between JL and KROS is -0.63 over 3 years, -0.07 over 1 year and n/a over 5 years.
Is KROS a good diversifier for JL?
Yes: at -0.63, the two have gone their own ways historically, which is what genuine diversification looks like.
What does a correlation of -0.63 mean?
A reading of -0.63 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/jl-vs-kros.json
Markdown for the live badge, attribution link included:
[](https://www.pairbook.io/pair/jl-vs-kros/)
No key needed, free to use. Full endpoint list in the API documentation.
Related comparisons
Hubs: JL correlations · KROS correlations
