According to the Wissink, that could mean the entire industry contracting by as much as 15 percent. This is a less-than-ideal time for such a decline: Mattel has seen its share price fall 8 percent in less than six months, and rumors have begun swirling about a bankruptcy filing. Hasbro, which was discussed as a potential buyer for Mattel, has also seen its share price dip 4.6 percent.