Greywolf Execution Partners, a New York Stock Exchange floor brokerage, hired three sales traders away from MND Partners, also an NYSE brokerage. Joining Greywolf are Tim Nick, Mark Puetzer, and Charley Jenness. Both Nick and Puetzer spent the previous four years at MND, a unit of Chicago options-trading house PEAK6 Investments. Before that they worked for another NYSE floor brokerage called Z&Z Securities, according to FINRA. Jenness was at MND for two years. Before that he worked for Greywolf. Jenness spent eight years with Bear Wagner Specialists from 2001 to 2009. Behind the moves, according to a spokesperson, was the opportunity for the sales traders to offer their customers Greywolf’s relatively new technical analysis services.