Mattel
On November 10, 2017, the "Wall Street Journal" reported that Hasbro, Inc. had made a takeover offer for Mattel, Inc. At the time, Mattel worth was $5 billion, while Hasbro was about $11 billion. On November 15, 2017, Reuters reported that Mattel rejected the offer.
Mega Brands
On February 28, 2014, it was announced that Mattel, Inc. would acquire Mega Brands Inc. for approximately US$450 million. It became a wholly owned subsidiary of Mattel as of April 20, 2014. Prior to the purchase, Mega and Mattel were partners in adding Mattel brands to Mega "Worlds" plus a line for Mattel's American Girl that competes with Lego's Friends line.