ARAY vs TEM: Correlation
Measured on weekly returns over the past three years, Accuray Incorporated (ARAY) and Tempus AI, Inc. (TEM) carry a correlation of 0.43, a moderate link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are ARAY and TEM?
Over the past 3 years, ARAY and TEM moved with a correlation of 0.43, which is moderate. The relationship has been stable: the 1-year correlation (0.39) sits close to the 3-year figure. Over 5 years the correlation is n/a, and the annualized covariance of weekly returns is 3568.7 %².
Within ARAY's tracked universe of 10 assets, TEM comes in at #4 by 3-year correlation. Their recent paths diverged sharply: over the last 12 months TEM outperformed by 79.8 percentage points (-83.3% for ARAY against -3.5% for TEM).
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.
ARAY vs TEM: side by side
| ARAY (Accuray Incorporated) | TEM (Tempus AI, Inc.) | |
|---|---|---|
| 1-year return | -83.3% | -3.5% |
| 5-year return | -93.4% | n/a |
| Volatility (ann.) | 73.2% | 104.7% |
| Beta vs S&P 500 | 1.77 | 3.25 |
| Max drawdown (3Y) | -92.5% | -59.8% |
| Market cap | – | $12.8B |
| P/E (trailing) | – | – |
| Dividend yield | 0.00% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | ARAY | TEM |
|---|---|---|
| 2022 | -56.2% | – |
| 2023 | +35.4% | – |
| 2024 | -30.0% | – |
| 2025 | -58.6% | +74.9% |
| 2026 | -68.0% | +19.7% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are ARAY and TEM good diversifiers for each other?
A fair diversifier. At 0.43, enough of each asset's movement is its own that the pair has smoothed outcomes historically.
FAQ
What is the correlation between ARAY and TEM?
As of 2026-08-27, the correlation of weekly returns between ARAY and TEM is 0.43 over 3 years, 0.39 over 1 year and n/a over 5 years.
Is TEM a good diversifier for ARAY?
A fair diversifier. At 0.43, enough of each asset's movement is its own that the pair has smoothed outcomes historically.
What does a correlation of 0.43 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/aray-vs-tem.json
Embed this badge (it refreshes with the data), with attribution:
[](https://www.pairbook.io/pair/aray-vs-tem/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: ARAY correlations · TEM correlations
