What happened Shares of Fiverr International (NYSE: FVRR) gained 15.2% in September 2020, according to data from S&P Global Market Intelligence. The gains hinged on a well-received launch of a marketing campaign for the Fiverr brand itself. So what The freelancing marketplace started a new branding campaign on September 8, unlocking a 16% share-price jump in two days. Under the banner of "It Starts Here," the campaign highlights three small businesses that have used Fiverr's freelancers to find success in a difficult COVID-19 market environment. The program is supported by short-form video spots across social media services, media-streaming channels, and national TV ads. Fiverr also adopted a new logo and other visual representations of the brand, all of which were embraced by investors and Fiverr users alike. Image source: Getty Images. Now what The company also introduced Fiverr Business in September, but the launch of a team-based collaboration platform hardly moved the stock price at all. This project may be more important than the branding campaign in the long run, but that's not how Mr. Market saw it in September. All told, Fiverr's investors have pocketed a 572% gain in 2020. Wall Street is struggling to find a proper valuation for this high-octane growth stock whose second-quarter sales increased by 82% year over year, while generally accepted accounting principles (GAAP) earnings were written in red ink. You should expect Fiverr's stock to show plenty of volatility over the next few years as the company continues to optimize its business plan for maximal top-line growth, leaving sustainable profits for some later period several years down the road. Find out why Fiverr International is one of the 10 best stocks to buy now Motley Fool co-founders Tom and David Gardner have spent more than a decade beating the market. After all, the newsletter they have run for over a decade, Motley Fool Stock Advisor, has tripled the market.* Tom and David just revealed their ten top stock picks for investors to buy right now. Fiverr International is on the list -- but there are nine others you may be overlooking. Click here to get access to the full list! *Stock Advisor returns as of September 24, 2020 Anders Bylund has no position in any of the stocks mentioned. The Motley Fool owns shares of and recommends Fiverr International. The Motley Fool has a disclosure policy.Source