AMAT vs COHR: Correlation
How closely do Applied Materials (AMAT) and Coherent Corp. (COHR) trade together? Their weekly returns over three years give a correlation of 0.60, which is strong.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are AMAT and COHR?
On 3 years of weekly data the AMAT/COHR correlation comes out at 0.60, strong. Lately the two have drifted apart, with the 1-year correlation at 0.39 versus 0.60 over 3 years. The 5-year figure is 0.58, and annualized covariance runs at 1688.8 %².
Among the 34 assets we track against AMAT, COHR ranks #21 by 3-year correlation. Their recent paths diverged sharply: over the last 12 months COHR outperformed by 30.6 percentage points (+195.0% for AMAT against +225.6% for COHR). Across three years, the rolling one-year figure varied moderately, from 0.36 to 0.77.
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.
AMAT vs COHR: side by side
| AMAT (Applied Materials) | COHR (Coherent Corp.) | |
|---|---|---|
| 1-year return | +195.0% | +225.6% |
| 5-year return | +269.5% | +368.6% |
| Volatility (ann.) | 43.5% | 65.0% |
| Beta vs S&P 500 | 1.69 | 2.76 |
| Max drawdown (3Y) | -49.9% | -54.8% |
| Market cap | $382.8B | $57.8B |
| P/E (trailing) | 41.3 | 71.4 |
| Dividend yield | 0.41% | 0.00% |
| Sector / category | Information Technology | Information Technology |
Year-by-year returns
| Year | AMAT | COHR |
|---|---|---|
| 2022 | -37.5% | -48.6% |
| 2023 | +68.0% | +24.0% |
| 2024 | +1.1% | +117.6% |
| 2025 | +59.6% | +94.8% |
| 2026 | +88.4% | +60.0% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are AMAT and COHR good diversifiers for each other?
Somewhat, no more. With 0.60 correlation, most large moves hit both names, and the diversification benefit stays modest.
FAQ
What is the correlation between AMAT and COHR?
The AMAT/COHR correlation stands at 0.60 on a 3-year window (1 year: 0.39, 5 years: 0.58), computed from weekly returns as of 2026-08-27.
Is COHR a good diversifier for AMAT?
Somewhat, no more. With 0.60 correlation, most large moves hit both names, and the diversification benefit stays modest.
What does a correlation of 0.60 mean?
A reading of 0.60 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/amat-vs-cohr.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/amat-vs-cohr/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: AMAT correlations · COHR correlations
