Brinker International stock soared Wednesday after the owner of Chili’s Grill & Bar reported better-than-expected second-quarter earnings and lifted its full-year outlook for the second time in a row. Dallas-based Brinker said earnings for the 13 weeks ended Dec. 25 were $2.80 a share, up from about a dollar last year and topping estimates of $1.86 listed on FactSet. Chili’s, a casual dining chain that makes up about 90% of Brinker’s overall revenue, has been the star of the show.