SPRO vs ZEO: Correlation
Measured on weekly returns over the past three years, Spero Therapeutics, Inc. (SPRO) and Zeo Energy Corporation (ZEO) carry a correlation of 0.41, a moderate link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are SPRO and ZEO?
Over the past 3 years, SPRO and ZEO moved with a correlation of 0.41, which is moderate. The past 12 months show a weaker link (0.05) than the 3-year average (0.41). Over 5 years the correlation is 0.35, and the annualized covariance of weekly returns is 8521.4 %².
By 3-year correlation, ZEO places #6 of the 18 assets tracked against SPRO. The last year tells two different stories: SPRO led by 42.8 percentage points, -38.9% for SPRO against -81.7% for ZEO.
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.
SPRO vs ZEO: side by side
| SPRO (Spero Therapeutics, Inc.) | ZEO (Zeo Energy Corporation) | |
|---|---|---|
| 1-year return | -38.9% | -81.7% |
| 5-year return | -93.3% | -96.8% |
| Volatility (ann.) | 159.8% | 130.0% |
| Beta vs S&P 500 | 1.61 | 1.10 |
| Max drawdown (3Y) | -68.9% | -97.4% |
| Market cap | $0.1B | – |
| P/E (trailing) | 8.6 | – |
| Dividend yield | 0.00% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | SPRO | ZEO |
|---|---|---|
| 2022 | -89.2% | +4.2% |
| 2023 | -15.0% | +8.9% |
| 2024 | -29.9% | -69.5% |
| 2025 | +126.2% | -68.2% |
| 2026 | -48.1% | -70.9% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are SPRO and ZEO good diversifiers for each other?
A fair diversifier. At 0.41, enough of each asset's movement is its own that the pair has smoothed outcomes historically.
FAQ
What is the correlation between SPRO and ZEO?
Using weekly returns as of 2026-08-27: 0.41 over 3 years, with 0.05 over the last year and 0.35 over 5 years.
Is ZEO a good diversifier for SPRO?
A fair diversifier. At 0.41, enough of each asset's movement is its own that the pair has smoothed outcomes historically.
What does a correlation of 0.41 mean?
On the −1 to +1 scale, 0.41 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/spro-vs-zeo.json
Markdown for the live badge, attribution link included:
[](https://www.pairbook.io/pair/spro-vs-zeo/)
Free with attribution; caching and terms are described in the API documentation.
Related comparisons
Hubs: SPRO correlations · ZEO correlations
