Super Micro Computer shares plunged 20% on Wednesday after the company posted weaker-than-expected fiscal fourth quarter results, dented in part by President Donald Trump's tariffs. CEO Charles Liang told investors on a conference call that the company has "taken measures to reduce the impact" of the tariffs. "With respect to the tariffs, the situation is dynamic," CFO David Weigand said on the investor call. "We're actively monitoring the tariff environment. We know there's news coming out next week. If we have any updates, we'll share it with you, but we can only watch and react as every other business is." Super Micro reported fourth-quarter adjusted earnings per share of 41 cents, compared with expectations for 44 cents. Revenue came in at $5.76 billion, which was below analysts' forecasts of $5.89 billion. Liang told investors the company was hindered by a June revenue shortfall due to a lack of working capital and "specification changes from a major new customer."