ELMD vs FSLY: Correlation
Electromed, Inc. (ELMD) and Fastly, Inc. (FSLY) show a negative relationship: their 3-year correlation of weekly returns is -0.27.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are ELMD and FSLY?
Over the past 3 years, ELMD and FSLY moved with a correlation of -0.27, which is negative, meaning they tend to move in opposite directions. Lately the two have drifted apart, with the 1-year correlation at -0.39 versus -0.27 over 3 years. Over 5 years the correlation is -0.12, and the annualized covariance of weekly returns is -1333.4 %².
Among the 12 assets we track against ELMD, FSLY sits near the bottom by co-movement, at rank #11. Their recent paths diverged sharply: over the last 12 months FSLY outperformed by 207.3 percentage points (+21.7% for ELMD against +229.0% for FSLY). One caveat on sizing: FSLY is 2.1 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.
ELMD vs FSLY: side by side
| ELMD (Electromed, Inc.) | FSLY (Fastly, Inc.) | |
|---|---|---|
| 1-year return | +21.7% | +229.0% |
| 5-year return | +144.2% | -43.5% |
| Volatility (ann.) | 48.9% | 101.8% |
| Beta vs S&P 500 | 0.63 | 1.26 |
| Max drawdown (3Y) | -48.9% | -80.0% |
| Market cap | $0.3B | $3.9B |
| P/E (trailing) | 24.5 | – |
| Dividend yield | 0.00% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | ELMD | FSLY |
|---|---|---|
| 2022 | -19.3% | -76.9% |
| 2023 | +4.0% | +117.3% |
| 2024 | +170.9% | -47.0% |
| 2025 | -1.5% | +7.8% |
| 2026 | +3.5% | +142.0% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are ELMD and FSLY good diversifiers for each other?
By historical standards, yes. A correlation of -0.27 means the two rarely move for the same reasons.
FAQ
What is the correlation between ELMD and FSLY?
The ELMD/FSLY correlation stands at -0.27 on a 3-year window (1 year: -0.39, 5 years: -0.12), computed from weekly returns as of 2026-08-27.
Is FSLY a good diversifier for ELMD?
By historical standards, yes. A correlation of -0.27 means the two rarely move for the same reasons.
What does a correlation of -0.27 mean?
A reading of -0.27 sits on a scale from −1 (opposite moves) through 0 (unrelated) to +1 (identical moves). Correlation captures direction, not magnitude or performance.
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Related comparisons
Hubs: ELMD correlations · FSLY correlations
