On Wednesday, Tiffany slid as much as 11%.
The drop came after luxury conglomerate LVMH canceled plans to buy the jeweler for $16.2 billion.
On Wednesday, the Louis Vuitton parent said the deal's contract set a November 24 deadline The French government and Tiffany's request to delay the deal led to LVMH pulling out.
Tiffany responded soon after, saying in a press release it filed a lawsuit to keep the acquisition on track.
