GBL had taken an initial 3 percent stake in March.
The Milan-based group is in the midst of a reorganization and streamlining of its brands, which dented its revenues last year.
The department store has denied claims that it misled investors in 2013 on its financial state.
Jane Hali & Associates LLC offers research on the retail and fashion apparel market to institutional investors.
A new survey offered insight into the building disparities between retailers and successful deployment of necessary solutions among staff members.
The two firms also announced plans to integrate their inventory systems and other operations.
The new celebrity ambassadorship boosted sales on online marketplaces in China by an astounding 250 percent.
Kors had been in the running alongside InterParfums and CVC Capital Partners.
Issues abound with the new administration and retailers are paying for a voice.