STOK vs STRO: Correlation
Measured on weekly returns over the past three years, Stoke Therapeutics, Inc. (STOK) and Sutro Biopharma, Inc. (STRO) carry a correlation of 0.51, a moderate link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are STOK and STRO?
Over the past 3 years, STOK and STRO moved with a correlation of 0.51, which is moderate. Lately the two have drifted apart, with the 1-year correlation at 0.29 versus 0.51 over 3 years. Over 5 years the correlation is 0.49, and the annualized covariance of weekly returns is 5319.5 %².
Among the 12 assets we track against STOK, STRO ranks #5 by 3-year correlation. The last year tells two different stories: STRO led by 67.9 percentage points, +68.9% for STOK against +136.8% for STRO.
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.
STOK vs STRO: side by side
| STOK (Stoke Therapeutics, Inc.) | STRO (Sutro Biopharma, Inc.) | |
|---|---|---|
| 1-year return | +68.9% | +136.8% |
| 5-year return | +23.8% | -90.2% |
| Volatility (ann.) | 93.2% | 112.5% |
| Beta vs S&P 500 | 1.80 | 3.52 |
| Max drawdown (3Y) | -66.3% | -90.8% |
| Market cap | $2.1B | $0.4B |
| P/E (trailing) | – | – |
| Dividend yield | 0.00% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | STOK | STRO |
|---|---|---|
| 2022 | -61.5% | -45.7% |
| 2023 | -43.0% | -46.9% |
| 2024 | +109.7% | -57.1% |
| 2025 | +187.8% | -37.1% |
| 2026 | +2.7% | +84.2% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are STOK and STRO good diversifiers for each other?
Somewhat, no more. With 0.51 correlation, most large moves hit both names, and the diversification benefit stays modest.
FAQ
What is the correlation between STOK and STRO?
The STOK/STRO correlation stands at 0.51 on a 3-year window (1 year: 0.29, 5 years: 0.49), computed from weekly returns as of 2026-08-27.
Is STRO a good diversifier for STOK?
Somewhat, no more. With 0.51 correlation, most large moves hit both names, and the diversification benefit stays modest.
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/stok-vs-stro.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/stok-vs-stro/)
No key needed, free to use. Full endpoint list in the API documentation.
Related comparisons
Hubs: STOK correlations · STRO correlations
