What happened Shares of Twitter (NYSE: TWTR) rose sharply on Wednesday following the release of the popular messaging platform's fourth-quarter results. As of 3 p.m. EST, Twitter's stock price was up more than 12%. So what Twitter's revenue surged 28% year over year to $1.29 billion, fueled by strong user growth in international markets. The social media company's monetizable daily active usage (mDAU) -- essentially, the number of people who logged in and accessed Twitter's apps -- climbed 27% to 192 million. Advertising dollars follow eyeballs, and Twitter's ad revenue rose 31% to $1.15 billion. "Advertisers are benefiting from new ad formats, stronger attribution, and improved targeting," Twitter Chief Financial Officer Ned Segal said in a press release. Twitter delivered solid user and revenue growth in the fourth quarter. Image source: Getty Images. Better still, Twitter is becoming more profitable as it scales its revenue base. Its operating income soared 65% to $252 million, as its operating margin expanded to 20%, up from 15% in the year-ago quarter. Now what Looking ahead, Twitter expects to generate revenue of $940 million to $1.04 billion in the first quarter of 2021. Meanwhile, management anticipates an operating loss of as much as $50 million, as Twitter ramps up hiring and increases its investments in technology to support its growth initiatives. "Our product changes to date are promoting healthier conversations for those who use our service, including advertisers and partners, and we are excited about our plans to continue innovating in 2021," CEO Jack Dorsey said. {%sfr%10 stocks we like better than TwitterWhen 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 tripled the market.* David and Tom just revealed what they believe are the ten best stocks for investors to buy right now... and Twitter 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 November 20, 2020 Joe Tenebruso has no position in any of the stocks mentioned. The Motley Fool owns shares of and recommends Twitter. The Motley Fool has a disclosure policy.Source