Benzinga's Top ETF Gainers, February 15th

VelocityShares Daily 2x VIX Short Term ETN

spiked 10.99% on Wednesday, and it closed at $19.08. TVIX rallied today on concerns that Greece is moving closer to default. Direxion Daily Natural Gas Related Bull 3x ETF

gained 5.69% today as Devon Energy Corporation

traded 7.17% higher, and Southwestern Energy Company

added 2.46%. iPath Dow Jones-UBS Cocoa Subindex Total Return ETN

jumped 3.43% today as cocoa futures traded higher after Olam International Ltd., a notable raw-material trading company, announced that it sees more upside for cocoa. Direxion Daily Small Cap Bear 3X Shares

added 2.58% on Wednesday as the Russell 2000 Index traded lower. TZA closed at $19.45, and it had a volume of 29.42M traded shares.