GFAI vs STEM: Correlation
How closely do Guardforce AI Co., Limited (GFAI) and Stem, Inc. (STEM) trade together? Their weekly returns over three years give a correlation of 0.49, which is moderate.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are GFAI and STEM?
Over the past 3 years, GFAI and STEM moved with a correlation of 0.49, which is moderate. Recent behaviour matches the longer record: 0.50 over 1 year against 0.49 over 3. Over 5 years the correlation is 0.26, and the annualized covariance of weekly returns is 5389.3 %².
Within GFAI's tracked universe of 10 assets, STEM comes in at #4 by 3-year correlation. Twelve-month performance is nearly a tie, at -68.7% for GFAI and -64.9% for STEM. Risk is not evenly split, since STEM carries 1.5 times the volatility of the other side.
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.
GFAI vs STEM: side by side
| GFAI (Guardforce AI Co., Limited) | STEM (Stem, Inc.) | |
|---|---|---|
| 1-year return | -68.7% | -64.9% |
| 5-year return | -99.8% | -98.9% |
| Volatility (ann.) | 84.4% | 129.9% |
| Beta vs S&P 500 | 2.19 | 2.49 |
| Max drawdown (3Y) | -93.9% | -95.5% |
| Market cap | – | $0.1B |
| P/E (trailing) | – | – |
| Dividend yield | 0.00% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | GFAI | STEM |
|---|---|---|
| 2022 | -88.2% | -52.9% |
| 2023 | -34.6% | -56.6% |
| 2024 | -56.9% | -84.5% |
| 2025 | -61.0% | +24.8% |
| 2026 | -33.2% | -62.1% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are GFAI and STEM good diversifiers for each other?
Yes, to a useful degree: a correlation of 0.49 leaves real independence between the two, which historically damped combined volatility.
FAQ
What is the correlation between GFAI and STEM?
As of 2026-08-27, the correlation of weekly returns between GFAI and STEM is 0.49 over 3 years, 0.50 over 1 year and 0.26 over 5 years.
Is STEM a good diversifier for GFAI?
Yes, to a useful degree: a correlation of 0.49 leaves real independence between the two, which historically damped combined volatility.
What does a correlation of 0.49 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/gfai-vs-stem.json
Embed this badge (it refreshes with the data), with attribution:
[](https://www.pairbook.io/pair/gfai-vs-stem/)
No key needed, free to use. Full endpoint list in the API documentation.
Related comparisons
Hubs: GFAI correlations · STEM correlations
