** While Cinema operator AMC Entertainment Holdings leads charge in trading volume among meme stocks popular with retail traders on online forums such as Reddit's WallStreetBets on Monday, Corsair Gaming CRSR.O gains ground faster, last up 13.4%.

* AMC last up 10.0% at $54.32 as 82,138,312 shares already changed hands, surpassing even Enochain ENOB.O , soaring after U.S. FDA accepts pre-Investigational New Drug request to treat HIV 

** While investors flock to AMC shares, in contrast the latest new release in U.S. movie theaters disappoints with "In the Heights" bringing in $11.4 mln in its first four days at the box office vs expectations for $20 mln 

** Corsair, with 22,444,219 shares traded, has most mentions on WallStreetBets according to Swaggystocks.com sentiment trader, followed by Clean Energy Fuels, up 11.5%

** Trading in ContextLogic was also busy with 38,212,273 shares changing hands and price rising 10.0% to $11.00

** Original meme darling and video game retailer GameStop Corp down 4.3%, after falling 6% last week to snap a three-week winning streak

** After gaining in the premarket, electric-truck maker Workhorse Group up 1%, and U.S.-listed shares of security solutions provider BlackBerry up 1.1%

** Headphone maker Koss Corp was down 3.3% and Chinese electric-car maker NIO Inc up 1.6%

** Newer meme stocks Clover Health Investments Corp and prison operator Geo Group down 7.6% and 3.4%, respectively

(Reporting by Devik Jain in Bengaluru, Sinéad Carew in New York) ((sinead.carew@thomsonreuters.com; +1 (646) 223 6186; Reuters Messaging: sinead.carew.thomsonreuters.com@reuters.net))