Correlation Between Photronics and Aehr Test

Can any of the company-specific risk be diversified away by investing in both Photronics and Aehr Test at the same time? Although using a correlation coefficient on its own may not help to predict future stock returns, this module helps to understand the diversifiable risk of combining Photronics and Aehr Test into the same portfolio, which is an essential part of the fundamental portfolio management process.

By analyzing existing cross correlation between Photronics and Aehr Test Systems, you can compare the effects of market volatilities on Photronics and Aehr Test and check how they will diversify away market risk if combined in the same portfolio for a given time horizon. You can also utilize pair trading strategies of matching a long position in Photronics with a short position of Aehr Test. Check out your portfolio center. Please also check ongoing floating volatility patterns of Photronics and Aehr Test.

Diversification Opportunities for Photronics and Aehr Test

0.32

Correlation Coefficient

Photronics  Aehr Test

Weak diversification

The 3 months correlation between Photronics and Aehr is 0.32. Overlapping area represents the amount of risk that can be diversified away by holding Photronics and Aehr Test Systems in the same portfolio, assuming nothing else is changed. The correlation between historical prices or returns on Aehr Test Systems and Photronics is a relative statistical measure of the degree to which these equity instruments tend to move together. The correlation coefficient measures the extent to which returns on Photronics are associated (or correlated) with Aehr Test. Values of the correlation coefficient range from -1 to +1, where. The correlation of zero (0) is possible when the price movement of Aehr Test Systems has no effect on the direction of Photronics i.e., Photronics and Aehr Test go up and down completely randomly.

Pair Corralation between Photronics and Aehr Test

Given the investment horizon of 90 days Photronics is expected to generate 11.76 times less return on investment than Aehr Test. But when comparing it to its historical volatility, Photronics is 1.98 times less risky than Aehr Test. It trades about 0.04 of its potential returns per unit of risk. Aehr Test Systems is currently generating about 0.25 of returns per unit of risk over similar time horizon. If you would invest  836.00  in Aehr Test Systems on May 7, 2025 and sell it today you would earn a total of  1,067  from holding Aehr Test Systems or generate 127.63% return on investment over 90 days.

Time Period	3 Months [change]
Direction	Moves Together
Strength	Very Weak
Accuracy	100.0%
Values	Daily Returns

Photronics  vs.  Aehr Test Systems

Photronics

Risk-Adjusted Performance

Insignificant

Compared to the overall equity markets, risk-adjusted returns on investments in Photronics are ranked lower than 3 (%) of all global equities and portfolios over the last 90 days. Despite somewhat weak basic indicators, Photronics may actually be approaching a critical reversion point that can send shares even higher in September 2025.

Aehr Test Systems

Risk-Adjusted Performance

Solid

Compared to the overall equity markets, risk-adjusted returns on investments in Aehr Test Systems are ranked lower than 19 (%) of all global equities and portfolios over the last 90 days. Even with relatively conflicting technical indicators, Aehr Test reported solid returns over the last few months and may actually be approaching a breakup point.

Pair Trading with Photronics and Aehr Test

The main advantage of trading using opposite Photronics and Aehr Test positions is that it hedges away some unsystematic risk. Because of two separate transactions, even if Photronics position performs unexpectedly, Aehr Test can make up some of the losses. Pair trading also minimizes risk from directional movements in the market. For example, if an entire industry or sector drops because of unexpected headlines, the short position in Aehr Test will offset losses from the drop in Aehr Test's long position.

The idea behind Photronics and Aehr Test Systems pairs trading is to make the combined position market-neutral, meaning the overall market's direction will not affect its win or loss (or potential downside or upside). This can be achieved by designing a pairs trade with two highly correlated stocks or equities that operate in a similar space or sector, making it possible to obtain profits through simple and relatively low-risk investment.

Check out your portfolio center.

Note that this page's information should be used as a complementary analysis to find the right mix of equity instruments to add to your existing portfolios or create a brand new portfolio. You can also try the Price Transformation module to use Price Transformation models to analyze the depth of different equity instruments across global markets.