The great Gucci reset is here. On Wednesday, the Italian fashion house named Demna, the mononymic designer who transformed Balenciaga from a niche luxury house into one of the most provocative, boundary-breaking brands of the last decade, as its new artistic director. He will be in charge of women’s wear, men’s wear and accessories.

The Georgian creative will wrap up his tenure at Balenciaga with a couture show on July 9. His successor has yet to be named.

Shares in Kering sank, after the French fashion conglomerate named the provocative designer Demna as artistic director of Gucci, its largest brand. Kering stock recently stood more than 13% lower, putting the shares on course for one of their biggest one-day drops on record,

Kering lost around $3 billion in stockmarket value on Friday after the group chose in-house talent Demna to reinvigorate its Gucci label rather than hiring one of fashion's big-ticket names as chief designer.

Kering appointed Demna Gvasalia as artistic director of Gucci, turning to the Balenciaga designer to inject new life into its flagship brand at a difficult time for the industry.