GRF vs PLAB: Correlation
How closely do Eagle Capital Growth Fund, Inc. (GRF) and Photronics, Inc. (PLAB) 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 GRF and PLAB?
On 3 years of weekly data the GRF/PLAB correlation comes out at 0.39, moderate. The relationship has been stable: the 1-year correlation (0.38) sits close to the 3-year figure. The 5-year figure is 0.18, and annualized covariance runs at 460.8 %².
In GRF's tracked universe of 10 assets, PLAB sits right near the top at #2. Correlation aside, the last 12 months split them widely, with PLAB ahead by 16.5 points (+9.7% versus +26.2%). One caveat on sizing: PLAB is 3.1 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.
GRF vs PLAB: side by side
| GRF (Eagle Capital Growth Fund, Inc.) | PLAB (Photronics, Inc.) | |
|---|---|---|
| 1-year return | +9.7% | +26.2% |
| 5-year return | +56.2% | +106.4% |
| Volatility (ann.) | 19.6% | 60.0% |
| Beta vs S&P 500 | 0.31 | 1.56 |
| Max drawdown (3Y) | -17.8% | -50.6% |
| Market cap | – | $1.8B |
| P/E (trailing) | 10.5 | 10.8 |
| Dividend yield | 8.10% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | GRF | PLAB |
|---|---|---|
| 2022 | -6.5% | -10.7% |
| 2023 | +14.9% | +86.4% |
| 2024 | +10.3% | -24.9% |
| 2025 | +19.1% | +35.8% |
| 2026 | -1.4% | -5.4% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are GRF and PLAB 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 GRF and PLAB?
Using weekly returns as of 2026-08-27: 0.39 over 3 years, with 0.38 over the last year and 0.18 over 5 years.
Is PLAB a good diversifier for GRF?
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?
A reading of 0.39 sits on a scale from −1 (opposite moves) through 0 (unrelated) to +1 (identical moves). Correlation captures direction, not magnitude or performance.
Use this data
$ curl https://www.pairbook.io/api/v1/pairs/grf-vs-plab.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/grf-vs-plab/)
No key needed, free to use. Full endpoint list in the API documentation.
Related comparisons
Hubs: GRF correlations · PLAB correlations
