Monrovia-based surgical company STAAR Surgical was this week’s biggest mover, gaining 24 percent to end at $8.48. PennyMac loan services of Westlake Village was also among the week’s movers. The financial services company gained 21 percent to end at $15.26. Los Angeles-based online advertising technology firm Rubicon Project was this week’s biggest loser, dropping 31 percent to end at $9.69.