Gtat LogoSource: GT Advanced Technologies.

The tech-heavy Nasdaq Composite index had a rough week between July 7 and July 11. The index fell 1.6%, well below the milder 0.9% drop of the broad-market indicator S&P 500.

But these three tech stocks suffered more than your average Nasdaq ticker this week.

  • IT security expert FireEye (NASDAQ:FEYE) plunged 13.7%, taking the edge off a positive two-month run.

  • Geospace Technologies (NASDAQ:GEOS), which provides seismic data tools for oil and gas producers, lost 15.6% in a weeklong tumble. The company's news wires have been very quiet lately -- maybe too quiet?

  • GT Advanced Technologies (NASDAQOTH:GTATQ) dropped 17.9%, starting with a downright brutal Monday session. The provider of sapphire screen covers for Apple's (NASDAQ:AAPL) next generation of mobile devices may already have all of its upcoming catalysts priced into the stock -- and then some.

The following slideshow will fill you in on the reasons behind these three sudden drops and prepare you for what's next.

Leaked: Apple's next smart device (warning -- it may shock you)
Cupertino sure knows how to make waves with new product introductions. There's another one right around the corner. Apple recently recruited a secret-development "dream team" to guarantee that its newest smart device was kept hidden from the public for as long as possible. But the secret is out, and some early viewers are even claiming that its everyday impact could trump the iPod, iPhone, and the iPad. In fact, ABI Research predicts that 485 million of these devices will be sold per year. But one small company makes this gadget possible. And its stock price has nearly unlimited room to run for early in-the-know investors. To be one of them, and to see Apple's newest smart gizmo, just click here!

Anders Bylund has no position in any stocks mentioned. The Motley Fool recommends Apple and Geospace Technologies and owns shares of Apple. Try any of our Foolish newsletter services free for 30 days.

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