The Los Angeles Business Journal’s index of largest local public companies closed up slightly for the week, as the broader markets reacted to a decline in the national unemployment rate.

The weighted LABJ Stock Index rose 1.3 percent to 139.96 for the week ended Oct. 5. Gainers outpaced decliners 92 to 72, with 12 companies unchanged.

The biggest gainer was Broadway Financial Corp., which jumped 28 percent to $1.34. The L.A. parent of Broadway Federal Bank reported a return to profit in its quarterly earnings report.

DreamWorks Animation SKG Inc. rose 8 percent to $20.12. The Glendale animated film studio benefited from positive media coverage.

Spark Networks Inc. rose more than 7 percent to $6.57. An analyst initiated coverage with a “buy” recommendation on shares of the Beverly Hills provider of online personal ad services.

One of the biggest decliners was American Apparel Inc. The Los Angeles apparel company dropped 22 percent to $1.30. The company’s stock had been on the upswing after it reported a 15 percent increase in same-store sales last month.

International Rectifier Corp. fell 6 percent to $16.27. The El Segundo semiconductor company was hurt by an analyst downgrade.