What happened

HP (NYSE:HPQ) stock -- formerly known as Hewlett-Packard -- rose as much as 9.9% in early Thursday trading before settling down to enjoy a more recent gain of 8.7% as of 2:30 p.m. EST.

So what

This being earnings season, you might expect that earnings had something to do with HP's rise -- and you'd be right. HP reported its fiscal Q1 2017 earnings yesterday after close of trading.

Earnings of $0.36 per share on revenue of $12.7 billion beat Wall Street estimates on both fronts. This probably explains why the stock is responding so strongly. Compared to the year-ago results, profits were flat, and operating profit margins declined 90 basis points, to 6.7%. On the other hand, at least revenues rose -- 4% year over year.

Blank laptop screen.

Investors see reason to cheer in HP's earnings. But what do you see on the screen? Image source: Getty Images.

Now what

Turning its gaze forward, however, HP predicted that the second fiscal quarter of 2017 will see profits turn back down, to perhaps as low as $0.32 to $0.35 per share. This guidance range would appear to fall short of Wall Street expectations for $0.39 per share in Q2. What's more, HP's entire guidance range fell below the $0.36 per share that the company earned in last year's Q2.

That's not particularly good news, yet investors appear to be shrugging it off in light of the "earnings beat" HP achieved in Q1. (Or they may be assuming HP is lowballing its estimates again, and hoping for a repeat beat).

Either way, at a P/E (price-to-earnings ratio) multiple of only 11 times trailing earnings, HP stock certainly doesn't seem expensive today. Up 9% on Thursday, it shouldn't take much more good news to make it go up more.

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.