MACI vs PRM: Correlation
Measured on weekly returns over the past three years, Melar Acquisition Corp. I - Class A (MACI) and Perimeter Solutions, SA (PRM) carry a correlation of -0.26, a negative link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are MACI and PRM?
Over the past 3 years, MACI and PRM moved with a correlation of -0.26, which is negative, meaning they tend to move in opposite directions. The link has loosened recently: the 1-year correlation (-0.43) runs below the 3-year figure (-0.26). Over 5 years the correlation is n/a, and the annualized covariance of weekly returns is -24.7 %².
Among the 71 assets we track against MACI, PRM ranks #64 by 3-year correlation. The last year tells two different stories: PRM led by 42.5 percentage points, +4.4% for MACI against +46.9% for PRM. Note the risk asymmetry: PRM runs 23.4 times the annualized volatility of the other leg, so equal-weighting the two is not an equal-risk position.
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.
MACI vs PRM: side by side
| MACI (Melar Acquisition Corp. I - Class A) | PRM (Perimeter Solutions, SA) | |
|---|---|---|
| 1-year return | +4.4% | +46.9% |
| 5-year return | n/a | +166.9% |
| Volatility (ann.) | 2.1% | 49.1% |
| Beta vs S&P 500 | -0.03 | 1.44 |
| Max drawdown (3Y) | -2.0% | -51.3% |
| Market cap | $0.2B | $5.2B |
| P/E (trailing) | 60.9 | – |
| Dividend yield | 0.00% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | MACI | PRM |
|---|---|---|
| 2022 | – | -34.2% |
| 2023 | – | -49.7% |
| 2024 | – | +177.8% |
| 2025 | +5.7% | +115.4% |
| 2026 | +3.1% | +16.3% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are MACI and PRM good diversifiers for each other?
By historical standards, yes. A correlation of -0.26 means the two rarely move for the same reasons.
FAQ
What is the correlation between MACI and PRM?
Using weekly returns as of 2026-08-27: -0.26 over 3 years, with -0.43 over the last year and n/a over 5 years.
Is PRM a good diversifier for MACI?
By historical standards, yes. A correlation of -0.26 means the two rarely move for the same reasons.
What does a correlation of -0.26 mean?
On the −1 to +1 scale, -0.26 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/maci-vs-prm.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/maci-vs-prm/)
No key needed, free to use. Full endpoint list in the API documentation.
Related comparisons
Hubs: MACI correlations · PRM correlations
