ALRM vs PUBM: Correlation
How closely do Alarm.com Holdings, Inc. (ALRM) and PubMatic, Inc. (PUBM) trade together? Their weekly returns over three years give a correlation of 0.51, which is moderate.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are ALRM and PUBM?
On 3 years of weekly data the ALRM/PUBM correlation comes out at 0.51, moderate. Little has changed lately, as the 1-year reading of 0.52 lands near the 3-year figure. The 5-year figure is 0.35, and annualized covariance runs at 876.4 %².
Within ALRM's tracked universe of 17 assets, PUBM comes in at #7 by 3-year correlation. Their recent paths diverged sharply: over the last 12 months PUBM outperformed by 93.3 percentage points (-1.6% for ALRM against +91.7% for PUBM). One caveat on sizing: PUBM is 2.2 times as volatile as the other leg, so an equal-dollar split is far from equal-risk.
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.
ALRM vs PUBM: side by side
| ALRM (Alarm.com Holdings, Inc.) | PUBM (PubMatic, Inc.) | |
|---|---|---|
| 1-year return | -1.6% | +91.7% |
| 5-year return | -30.9% | -40.5% |
| Volatility (ann.) | 28.1% | 61.6% |
| Beta vs S&P 500 | 0.96 | 1.56 |
| Max drawdown (3Y) | -44.3% | -73.9% |
| Market cap | $2.8B | $0.7B |
| P/E (trailing) | 25.5 | – |
| Dividend yield | 0.00% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | ALRM | PUBM |
|---|---|---|
| 2022 | -41.7% | -62.4% |
| 2023 | +30.6% | +27.3% |
| 2024 | -5.9% | -9.9% |
| 2025 | -16.1% | -39.6% |
| 2026 | +12.9% | +84.3% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are ALRM and PUBM good diversifiers for each other?
Somewhat, no more. With 0.51 correlation, most large moves hit both names, and the diversification benefit stays modest.
FAQ
What is the correlation between ALRM and PUBM?
Using weekly returns as of 2026-08-27: 0.51 over 3 years, with 0.52 over the last year and 0.35 over 5 years.
Is PUBM a good diversifier for ALRM?
Somewhat, no more. With 0.51 correlation, most large moves hit both names, and the diversification benefit stays modest.
What does a correlation of 0.51 mean?
On the −1 to +1 scale, 0.51 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/alrm-vs-pubm.json
Markdown for the live badge, attribution link included:
[](https://www.pairbook.io/pair/alrm-vs-pubm/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: ALRM correlations · PUBM correlations
