The post Western Digital Just Dropped 13% in a Month. Is It Time to Sell? appeared first on 24/7 Wall St.. Shares of Western Digital (NASDAQ:WDC) have moved the wrong way during a month when nearly every other storage and memory name has rallied. Western Digital stock is down 13% over the trailing month, and it’s trading at $465.32 Friday afternoon. The drop looks unusual against the backdrop. SanDisk (NASDAQ:SNDK) stock is up 16% over the same …