Shares of Micron (MU) - Get Report have been strong this year, already rallying 20% in 2017. While impressive, these gains pall in comparison to the stock's 147% jump over the past 12 months. Will that momentum continue when the company reports earnings on Thursday after the close?

Micron already preannounced, TheStreet's Jim Cramer, manager of the Action Alerts PLUS portfolio, pointed out on the floor of the New York Stock Exchange. So for the stock to move higher, the company will need to beat its most recent numbers. 

However, if management speaks positively about flash, that could have a positive effect on a different stock: Western Digital (WDC) - Get Report

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Western Digital makes disk drives, but also has a flash division, Cramer said of the Action Alerts PLUS portfolio holding. So any positive commentary from Micron on this segment should bode well for shares of Western Digital. 

Analysts expect Micron to earn 85 cents per share on $4.64 billion in revenue.

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At the time of publication, Cramer's Action Alerts PLUS had a position in WDC.