FEIM vs MRCY: Correlation
How closely do Frequency Electronics, Inc. (FEIM) and Mercury Systems Inc (MRCY) trade together? Their weekly returns over three years give a correlation of 0.39, which is moderate.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are FEIM and MRCY?
On 3 years of weekly data the FEIM/MRCY correlation comes out at 0.39, moderate. The link has tightened recently: the 1-year correlation (0.53) runs above the 3-year figure (0.39). The 5-year figure is 0.31, and annualized covariance runs at 1341.1 %².
MRCY is one of the assets that tracks FEIM most closely: it ranks #3 out of the 13 assets we track against FEIM. Their recent paths diverged sharply: over the last 12 months FEIM outperformed by 64.2 percentage points (+97.0% for FEIM against +32.8% for MRCY).
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.
FEIM vs MRCY: side by side
| FEIM (Frequency Electronics, Inc.) | MRCY (Mercury Systems Inc) | |
|---|---|---|
| 1-year return | +97.0% | +32.8% |
| 5-year return | +639.1% | +79.4% |
| Volatility (ann.) | 70.8% | 48.8% |
| Beta vs S&P 500 | 1.11 | 1.23 |
| Max drawdown (3Y) | -33.0% | -35.0% |
| Market cap | $0.7B | $5.4B |
| P/E (trailing) | – | – |
| Dividend yield | 0.00% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | FEIM | MRCY |
|---|---|---|
| 2022 | -29.4% | -18.7% |
| 2023 | +80.9% | -18.3% |
| 2024 | +83.2% | +14.8% |
| 2025 | +190.7% | +73.8% |
| 2026 | +18.7% | +23.9% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are FEIM and MRCY good diversifiers for each other?
A fair diversifier. At 0.39, enough of each asset's movement is its own that the pair has smoothed outcomes historically.
FAQ
What is the correlation between FEIM and MRCY?
The FEIM/MRCY correlation stands at 0.39 on a 3-year window (1 year: 0.53, 5 years: 0.31), computed from weekly returns as of 2026-08-27.
Is MRCY a good diversifier for FEIM?
A fair diversifier. At 0.39, enough of each asset's movement is its own that the pair has smoothed outcomes historically.
What does a correlation of 0.39 mean?
On the −1 to +1 scale, 0.39 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/feim-vs-mrcy.json
Embed this badge (it refreshes with the data), with attribution:
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Related comparisons
Hubs: FEIM correlations · MRCY correlations
