ATOM vs STEM: Correlation
Measured on weekly returns over the past three years, Atomera Incorporated (ATOM) and Stem, Inc. (STEM) carry a correlation of 0.36, a moderate link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are ATOM and STEM?
Over the past 3 years, ATOM and STEM moved with a correlation of 0.36, which is moderate. Little has changed lately, as the 1-year reading of 0.33 lands near the 3-year figure. Over 5 years the correlation is 0.38, and the annualized covariance of weekly returns is 5446.2 %².
Among the 12 assets we track against ATOM, STEM ranks #5 by 3-year correlation. The last year tells two different stories: ATOM led by 96.8 percentage points, +31.9% for ATOM against -64.9% for STEM.
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.
ATOM vs STEM: side by side
| ATOM (Atomera Incorporated) | STEM (Stem, Inc.) | |
|---|---|---|
| 1-year return | +31.9% | -64.9% |
| 5-year return | -81.4% | -98.9% |
| Volatility (ann.) | 117.4% | 129.9% |
| Beta vs S&P 500 | 1.78 | 2.49 |
| Max drawdown (3Y) | -88.0% | -95.5% |
| Market cap | $0.2B | $0.1B |
| P/E (trailing) | – | – |
| Dividend yield | 0.00% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | ATOM | STEM |
|---|---|---|
| 2022 | -69.1% | -52.9% |
| 2023 | +12.7% | -56.6% |
| 2024 | +65.5% | -84.5% |
| 2025 | -80.9% | +24.8% |
| 2026 | +102.3% | -62.1% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are ATOM and STEM good diversifiers for each other?
Reasonably. At 0.36, ATOM and STEM keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
FAQ
What is the correlation between ATOM and STEM?
Using weekly returns as of 2026-08-27: 0.36 over 3 years, with 0.33 over the last year and 0.38 over 5 years.
Is STEM a good diversifier for ATOM?
Reasonably. At 0.36, ATOM and STEM keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
What does a correlation of 0.36 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/atom-vs-stem.json
Embed this badge (it refreshes with the data), with attribution:
[](https://www.pairbook.io/pair/atom-vs-stem/)
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Related comparisons
Hubs: ATOM correlations · STEM correlations
