Biggest small-cap gainers and losers in Tuesday's trading

Here are Tuesday’s biggest percentage gainers and losers, along with top volume leaders, among companies with a market cap between $50 million and $750 million:
Biggest percentage gainers:
• Agria Corp. (NYSE:GRO), up 36.6% to $7.17 after being highlighted by CNBC.
• Royale Energy, Inc. (Nasdaq:ROYL), up 33.6% to $11.09 despite no announcements.
Biggest percentage losers:
• OMNI Energy Services Corp. (Nasdaq:OMNI), up 18.7% to $6.78 despite no news.
Biggest percentage losers:
• Macrovision Solutions Corp. (Nasdaq:MVSND), down 17.4% to $13.76 despite no reports from the company.
• Layne Christensen Co. (Nasdaq:LAYN), down 13.3% to $46.12 despite the drilling and construction services firm’s announcement early Tuesday that its first-quarter net income jumped 29% to $10.6 million, or $0.55 per share, from $8.2 million, or $0.52 per share, a year earlier. Wall Street analysts expected earnings of $0.54 per share.
• Mitcham Industries, Inc. (Nasdaq:MIND), down 11.3% to $19.37 despite posting a rise in first-quarter earnings.
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