NIR Group

[jurisper]

Cornell/YA Global restructured after it couldn't meet redemptions in 2008 - see http://www.forbes.com/sites/nathanvardi/2010/08/25/800-million-hedge-fund-discloses-sec-scrutiny

Laurus/Valens in 2009 - see

http://www.forbes.com/2009/08/06/laurus-petroalgae-hedge-valens-business-pipes.html

http://www.forbes.com/forbes/2009/0907/money-laurus-capital-petroalgae-hedge-fund-shuffle.html

http://www.forbes.com/sites/nathanvardi/2010/09/21/the-real-reason-for-the-petroalgae-ipo/

Not sure about Dutchess.

The piece on Cornell above mentions SEC enquiries but I haven't heard that anything ever came of that. I've never heard of any SEC/DoJ investigation of Laurus/Valens (which frankly I think is extraordinary).

In the 2000's, Cornell, NiR and Laurus tended to be the biggest players in this caper.

Southridge Capital is another one - owner Steve Hicks is being sued by the SEC, long drawn-out case: http://www.sec.gov/litigation/litreleases/2010/lr21709.htm

EDIT: here's CR (no doubt) comparing himself to some of these other players - http://the-cold-truth.blogspot.com/2009/08/lancelot-and-king.html