PLSE vs TEM: Correlation
Measured on weekly returns over the past three years, Pulse Biosciences, Inc (PLSE) and Tempus AI, Inc. (TEM) carry a correlation of 0.42, a moderate link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are PLSE and TEM?
Over the past 3 years, PLSE and TEM moved with a correlation of 0.42, which is moderate. Lately the two have drifted apart, with the 1-year correlation at 0.22 versus 0.42 over 3 years. Over 5 years the correlation is n/a, and the annualized covariance of weekly returns is 3761.9 %².
Few assets follow PLSE as closely as TEM, which ranks #2 of 11 tracked partners. Their recent paths diverged sharply: over the last 12 months PLSE outperformed by 209.9 percentage points (+206.4% for PLSE 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.
PLSE vs TEM: side by side
| PLSE (Pulse Biosciences, Inc) | TEM (Tempus AI, Inc.) | |
|---|---|---|
| 1-year return | +206.4% | -3.5% |
| 5-year return | +82.4% | n/a |
| Volatility (ann.) | 86.6% | 104.7% |
| Beta vs S&P 500 | 1.55 | 3.25 |
| Max drawdown (3Y) | -48.5% | -59.8% |
| Market cap | $3.5B | $12.8B |
| P/E (trailing) | – | – |
| Dividend yield | 0.00% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | PLSE | TEM |
|---|---|---|
| 2022 | -81.3% | – |
| 2023 | +341.9% | – |
| 2024 | +42.2% | – |
| 2025 | -21.1% | +74.9% |
| 2026 | +253.7% | +19.7% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are PLSE and TEM good diversifiers for each other?
Yes, to a useful degree: a correlation of 0.42 leaves real independence between the two, which historically damped combined volatility.
FAQ
What is the correlation between PLSE and TEM?
As of 2026-08-27, the correlation of weekly returns between PLSE and TEM is 0.42 over 3 years, 0.22 over 1 year and n/a over 5 years.
Is TEM a good diversifier for PLSE?
Yes, to a useful degree: a correlation of 0.42 leaves real independence between the two, which historically damped combined volatility.
What does a correlation of 0.42 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/plse-vs-tem.json
Embed this badge (it refreshes with the data), with attribution:
[](https://www.pairbook.io/pair/plse-vs-tem/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: PLSE correlations · TEM correlations
