The maker of Barbie and Hot Wheels is in talks with Authentic Brands Group regarding a potential acquisition at more than $20 per share. The bid from the brand management firm would value Mattel at approximately $6 billion, according to the Wall Street Journal, representing a premium of roughly 58% over the company's current share price.

Authentic Brands Group has made an approach and conducted private discussions with the toy maker. Shares of rival Hasbro also rose quickly following the report of the prospective takeover, though a formal offer has not been publicly confirmed.