What happened

Shares of media-streaming technology expert Roku (NASDAQ:ROKU) traded 8.2% higher at 2:15 p.m., EDT on Thursday in a surge caused by a bullish analyst report.

So what

Needham analyst Laura Martin reiterated her buy rating and $150 price target for Roku's stock, pointing out that the digital advertising market should bounce back after hitting a COVID-19-related bottom in the second quarter of 2020. Martin's channel checks pointed to strong hours-viewed metrics in Roku's second quarter, undermined by weak ad spending in key categories such as travel, autos, and entertainment.

The key insight in the Needham report is that advertisers are likely to hold back $7 billion of expected ad spending in this year's up-front TV market, allowing Roku and others to compete for a share of those delayed ad dollars in the second half of this year.

A yellow arrow crashes upward through a blue brick wall.

Image source: Getty Images.

Now what

Roku's shares have now gained more than 18% this week, including a 13% jump on Tuesday based on unsubstantiated buyout rumors involving Alphabet (NASDAQ:GOOG) (NASDAQ:GOOGL). It's not a cheap stock, trading at 11 times trailing sales with no profit or cash flows to speak of. Roku is still my top investment idea right now, despite this week's sharp upward correction.

This article represents the opinion of the writer, who may disagree with the “official” recommendation position of a Motley Fool premium advisory service. We’re motley! Questioning an investing thesis -- even one of our own -- helps us all think critically about investing and make decisions that help us become smarter, happier, and richer.