Los Angeles-based VCA Antech Inc. was this week’s biggest mover, gaining 29 percent to end at $91.25. ImmunoCellular Therapeutics Ltd was also among the week’s movers. The Calabasas-based clinical-stage immune-based therapy company gained 27 percent to end at $2.75. Los Angeles internet advertising and marketing technology company Social Reality Inc. was the week’s biggest loser, dropping 21 percent to end at $3.94.