ZAGG (NASDAQ:ZAGG) remains one of the more intriguing companies reporting this week.

The company that became an investor darling a couple of years ago on the success of its invisibleSHIELD protective covering for smartphones and tablets has been a bad bet for investors lately. The stock has shed nearly half of its value over the past year. 

It's not a lack of growth keeping ZAGG in check. Analysts see revenue and earnings per share climbing 20% and 31%, respectively, when it does report on Thursday afternoon. One problem has been that many investors approach ZAGG as an Apple (NASDAQ:AAPL) sympathy play. As iPhone and iPad growth has slowed, the market fears that ZAGG's popularity will also take a hit. 

There's also the improving quality of Corning's (NYSE:GLW) Gorilla Glass, the popular smartphone and iPad glass that gets more rugged with every incarnation. Is a protective film necessary if Corning's living up to expectations?

Thankfully ZAGG is no longer counting on invisibleSHIELD for the lion's share of its revenue. In this video, longtime Fool contributor Rick Munarriz discusses why the market may be underestimating ZAGG's potential heading into Thursday's report.

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.