BDTX vs TEM: Correlation
How closely do Black Diamond Therapeutics, Inc. (BDTX) and Tempus AI, Inc. (TEM) trade together? Their weekly returns over three years give a correlation of 0.48, which is moderate.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are BDTX and TEM?
Over the past 3 years, BDTX and TEM moved with a correlation of 0.48, 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 3746.1 %².
In BDTX's tracked universe of 11 assets, TEM sits right near the top at #3. Correlation aside, the last 12 months split them widely, with TEM ahead by 17.4 points (-20.9% versus -3.5%).
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.
BDTX vs TEM: side by side
| BDTX (Black Diamond Therapeutics, Inc.) | TEM (Tempus AI, Inc.) | |
|---|---|---|
| 1-year return | -20.9% | -3.5% |
| 5-year return | -77.0% | n/a |
| Volatility (ann.) | 83.4% | 104.7% |
| Beta vs S&P 500 | 2.26 | 3.25 |
| Max drawdown (3Y) | -83.1% | -59.8% |
| Market cap | $0.1B | $12.8B |
| P/E (trailing) | – | – |
| Dividend yield | 0.00% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | BDTX | TEM |
|---|---|---|
| 2022 | -66.2% | – |
| 2023 | +56.1% | – |
| 2024 | -23.8% | – |
| 2025 | +13.6% | +74.9% |
| 2026 | -6.6% | +19.7% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are BDTX and TEM good diversifiers for each other?
Reasonably. At 0.48, BDTX and TEM keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
FAQ
What is the correlation between BDTX and TEM?
Using weekly returns as of 2026-08-27: 0.48 over 3 years, with 0.39 over the last year and n/a over 5 years.
Is TEM a good diversifier for BDTX?
Reasonably. At 0.48, BDTX and TEM keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
What does a correlation of 0.48 mean?
On the −1 to +1 scale, 0.48 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/bdtx-vs-tem.json
Embed this badge (it refreshes with the data), with attribution:
[](https://www.pairbook.io/pair/bdtx-vs-tem/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: BDTX correlations · TEM correlations
