Benzinga's Top #PreMarket Gainers

shares climbed 70.27 percent to $0.260 in pre-market trading after the company reported winning of GSA Schedule 56.

shares rose 31.98 percent to $0.475 in pre-market trading after the company reported the approval for Medicare coverage.

shares rose 15.89 percent to $2.99 in pre-market trading after jumping 132.43 percent on Tuesday. Giga-tronics introduced New Real Time Threat Emulation System.

shares surged 10.10 percent to $12.97 in pre-market trading after the company reported better-than-expected earnings for its fiscal first quarter.

gained 3.17 percent to $34.78 in pre-market trading. Yahoo's board will meet to consider sale of its Internet business, Dow Jones reported.