What happened Commercial cleaning device specialist Tennant Company (NYSE: TNC) outpaced the market last month by gaining 24% compared to a 1% uptick in the S&P 500, according to S&P Global Market Intelligence. The rally put Tennant shareholders back ahead of the market in 2019, up over 32% through early August. Image source: Tennant Company. So what July's rally came mainly in the wake of surprisingly strong earnings results. Tennant revealed a sharp acceleration in its revenue growth for the fiscal second quarter thanks mainly to strength in the core U.S. market. Its growing portfolio of large-contract clients also helped push pricing higher to more than offset cost increases from tariffs. Now what CEO Chris Killingstad and his team raised their 2019 outlook on both the top and bottom lines to account for the healthy demand they're seeing right now. Weakness in parts of Europe and Asia will be key for investors to watch, since another slowdown would threaten that bright forecast. But as long as pockets of international stumbles don't coincide with a slump in the U.S. economy, Tennant appears set to boost sales by almost as much as it did during its banner 2018. 10 stocks we like better than Tennant CompanyWhen 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 Tennant Company 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 Tennant Company. The Motley Fool has a disclosure policy.Source