Shares in denim designer and retailer Blue Holdings Inc. surged 33 percent for the week fueled by rumors of a buyout from fellow Commerce-based denim company Innovo Group Inc. Shares closed out the week at $2.25.

Van Nuys microchip tester Trio Tech International rode a strong second quarter earnings report that sported an 89 percent jump in revenues. Shares in Trio Tech jumped 17 percent for the week and closed at $13.54.

Herbalife Ltd.’s shares surged after the Los Angeles healthcare supplement products company hired Goldman Sachs to advise it on a buyout offer from Whitney V LP. Shares in Herbalife gained 16 percent to finish the week at $38.33.

On the down slide was Fremont General Corp., thanks mainly to a scourge of bad loans made to sub prime borrowers that forced the company to end ties with 8,000 brokers. Shares in the Santa Monica lender slid 15 percent to $12.04.

Right behind was FirstFed Financial Corp., a Santa Monica retail bank and lender. Despite posting an 18 percent jump in fourth quarter profit, investors were leery of bad loans and sent FirstFed’s shares down 11 percent to $61.80.

Finally, Staar Surgical Co. announced it was doubtful it would land FDA approval for its implantable lenses designed to treat both astigmatism and nearsightedness. Shares in the Monrovia biotech company lost 9.6 percent for the week, closing at $6.31 a share.