Beverly Hills-based Genius Brands International Inc. was the week’s leader, gaining 20.6 percent to close at $4.51. Furniture maker Nova Lifestyle Inc., headquartered in Commerce, was close behind, shooting up 15.7 percent to close at $1.92. The week’s biggest laggard was Ritter Pharmaceuticals Inc. in Beverly Hills, which dropped 19.7 percent to close at $1.14.