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1. Ronnen Harary and Anton Rabie
Net Worth: $1.64 billion each
Change from 2017 Ranking: New
Major company holdings: Spin Master
The childhood friends founded Spin Master in 1994 after graduating from Ivey Business School. (A third cofounder, Ben Varadi, joined later that year.) The trio built their fortune on a series of hit toys, starting with the Earth Buddy, a stocking-covered head that grew grass hair, similar to a Chia Pet. Last year, Spin Master scored another hit with Hatchimals and has a global children’s entertainment franchise on its hands with Paw Patrol.