What happened Shares of Roku (NASDAQ: ROKU) jumped today after the streaming specialist got a positive analyst mention. Also, evidence of breakout growth in the connected TV (CTV) space, or ad-based video streaming, may have contributed to the move higher. The stock closed up 7.5%. Image source: Roku. So what In an analyst note, Cleveland Research said the CTV space was gaining momentum, which favors Roku, the leading streaming device maker. The research firm also said that advertiser adoption of CTV on Roku is outpacing peers. Roku generally collects one-third of ad revenue on its platform, while the content provider keeps the remaining two-thirds. Connected TV has been a major driver of Roku's growth, as platform revenue, which makes up two-thirds of total revenue, increased 78% in the company's third quarter. There was another reason for investors to get excited about CTV today: Perion Network, a small-cap ad tech stock, rose 13.6% after the company released a strong fourth-quarter earnings report that included 132% growth in CTV. Perion's results may have contributed to the gain in Roku's stock as investor enthusiasm continues to build for CTV. Now what Roku shares have exploded during the pandemic alongside other digital advertising plays. Ad demand has quickly ramped back up after a lull during the lockdown. The streaming stock is up nearly 300% over the past year. Investors will get an update from Roku on Feb. 18 when the company reports fourth-quarter earnings. Analysts see revenue increasing 49% to $613 million, and they expect its loss per share to narrow from $0.13 to $0.07. Considering the elevated demand for video streaming and the strong growth in digital advertising at titans like Facebook and Google in the fourth quarter, Roku could be poised to beat those numbers. 10 stocks we like better than RokuWhen 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 Roku 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 Suzanne Frey, an executive at Alphabet, is a member of The Motley Fool’s board of directors. Randi Zuckerberg, a former director of market development and spokeswoman for Facebook and sister to its CEO, Mark Zuckerberg, is a member of The Motley Fool's board of directors. Jeremy Bowman owns shares of Facebook and Roku. The Motley Fool owns shares of and recommends Alphabet (A shares), Alphabet (C shares), Facebook, and Roku. The Motley Fool has a disclosure policy.Source