What happened FireEye (NASDAQ: FEYE) investors trailed the market last month as the stock lost 11% compared to a 2% decrease in the S&P 500, according to data provided by S&P Global Market Intelligence. The slump pushed shares to a roughly 20% decline so far in 2019 against a 16% increase in the broader market. Image source: Getty Images. So what August's drop came as investors digested mixed earnings results from the cybersecurity specialist. Sales landed just above the outlook that CEO Kevin Mandia and his team had issued for the period. Yet profitability posted a surprising dip as expenses jumped. FireEye posted a loss of $0.33 per share compared to a loss of $0.38 per share a year ago. Now what Mandia highlighted the company's strengthening billings metric for new products. That success is being offset by rising costs, though, and by the retirement of a few legacy products that also carried high profit margins. These dynamics add up to a weaker-than-expected 2019 outlook, and so FireEye's stock might remain stuck behind the market until these operating and financial conditions improve. 10 stocks we like better than FireEyeWhen investing geniuses David and Tom Gardner have a stock tip, it can pay to listen. After all, the newsletter they have run for over a decade, Motley Fool Stock Advisor, has quadrupled the market.* David and Tom just revealed what they believe are the ten best stocks for investors to buy right now... and FireEye wasn't one of them! That's right -- they think these 10 stocks are even better buys. See the 10 stocks *Stock Advisor returns as of June 1, 2019 Demitrios Kalogeropoulos has no position in any of the stocks mentioned. The Motley Fool recommends FireEye. The Motley Fool has a disclosure policy.Source