Differential Brands Group Inc. was this week’s biggest mover, gaining 5.26 percent to end at $2.00. Software company Simulations Plus was also among this week’s biggest movers. The simulation software company rose 4.86 percent to end at $12.95. Sherman Oaks-based apparel and footwear company Cherokee Inc. was this week’s biggest loser, dropping 28.78 percent to end at $4.95.