Three leaders of Newmark Knight Franks’ retail group jumped ship last week, and it has led NKF to begin scouting another company acquisition to beef up its retail ranks.

The departures by Benjamin Fox, Stephen Asch and Gary Ackerman come eight years after the trio sold their retail real estate business, New Spectrum, to Newmark.

“It was an amicable parting of the ways,” said Fox, who joined Winick Realty Group as its president. Fox also will establish a retail investment business and open a Los Angeles office.

Asch and Ackerman joined Robert K. Futterman & Associates, a spokeswoman confirmed.

Futterman began his career with Asch and Ackerman at now-defunct Garrick Aug prior to the launch of New Spectrum and Futterman’s RKF opening.