IDYA vs RYTM: Correlation
How closely do IDEAYA Biosciences, Inc. (IDYA) and Rhythm Pharmaceuticals, Inc. (RYTM) trade together? Their weekly returns over three years give a correlation of 0.55, which is moderate.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are IDYA and RYTM?
On 3 years of weekly data the IDYA/RYTM correlation comes out at 0.55, moderate. The relationship has been stable: the 1-year correlation (0.50) sits close to the 3-year figure. The 5-year figure is 0.24, and annualized covariance runs at 1462.2 %².
Within IDYA's tracked universe of 23 assets, RYTM comes in at #7 by 3-year correlation. Their recent paths diverged sharply: over the last 12 months IDYA outperformed by 57.1 percentage points (+67.1% for IDYA against +10.0% for RYTM).
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.
IDYA vs RYTM: side by side
| IDYA (IDEAYA Biosciences, Inc.) | RYTM (Rhythm Pharmaceuticals, Inc.) | |
|---|---|---|
| 1-year return | +67.1% | +10.0% |
| 5-year return | +82.5% | +785.4% |
| Volatility (ann.) | 45.3% | 58.4% |
| Beta vs S&P 500 | 1.37 | 1.92 |
| Max drawdown (3Y) | -69.2% | -35.5% |
| Market cap | $4.0B | $7.7B |
| P/E (trailing) | – | – |
| Dividend yield | 0.00% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | IDYA | RYTM |
|---|---|---|
| 2022 | -23.1% | +191.8% |
| 2023 | +95.8% | +57.9% |
| 2024 | -27.8% | +21.8% |
| 2025 | +34.5% | +91.2% |
| 2026 | +20.8% | +5.1% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are IDYA and RYTM good diversifiers for each other?
To a limited degree. At 0.55 the two still catch most of the same waves, so the pair smooths returns a little without insulating either from a shared selloff.
FAQ
What is the correlation between IDYA and RYTM?
The IDYA/RYTM correlation stands at 0.55 on a 3-year window (1 year: 0.50, 5 years: 0.24), computed from weekly returns as of 2026-08-27.
Is RYTM a good diversifier for IDYA?
To a limited degree. At 0.55 the two still catch most of the same waves, so the pair smooths returns a little without insulating either from a shared selloff.
What does a correlation of 0.55 mean?
On the −1 to +1 scale, 0.55 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/idya-vs-rytm.json
Markdown for the live badge, attribution link included:
[](https://www.pairbook.io/pair/idya-vs-rytm/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: IDYA correlations · RYTM correlations
