Take a look at some of Friday's midday movers:
Aéropostale - The teen retailer plunged after reporting its seventh consecutive quarterly decline in comparable sales, with Morgan Stanley questioning the company's ability to remain a going concern even through the next year.
Aruba Networks - The maker of wireless-network equipment declined sharply after tallying third-quarter adjusted gross margin below expectations.
Covisint - The provider of a cloud-engagement platform fell after Pacific Crest downgraded its shares to "sector perform" from "outperform."
GameStop - The video-game retailer advanced after posting first-quarter adjusted earnings that topped estimates.