The Los Angeles Business Journal’s index of largest local public companies closed up for the week ended Feb. 18.

The weighted LABJ index rose 2.33 percent to 126.99, with gainers outpacing decliners 106 to 70.

Quarterly reports again drove many of the big movers. Torrance technology reseller PC Mall Inc. rose 19 percent to $8.75 after reporting fourth quarter net sales had jumped 26 percent to a record $425 million.

Despite reporting a fourth quarter loss, Calabasas health care staffing agency On Assignment Inc. gained more than 15 percent to $10.41 after cost-cutting and a recovery in temporary hiring enabled adjusted net income to beat Wall Street expectations.

Los Angeles veterinary services company VCA Antech Inc. added 10 percent to close at $25.88 after providing a better-than expected outlook for the current year.

ValueClick Inc. ended the week up nearly 8.5 percent to $15.55, after the Westlake Village Internet advertising company reported earnings that were nearly double Wall Street forecasts.

Valencia biotech MannKind Inc. continued to feel fallout from the previous week’s announcement of significant layoffs. Shares fell another 24 percent to $3.86.

Joe’s Jeans Inc. dropped more than 22 percent to $1.16. Stock of the Commerce designer jeans maker was downgraded by an analyst after reporting revenue that missed estimates.

ReachLocal Inc. lost 14 percent to $21.35. The Westlake Village small business Internet marketing firm provided guidance for the current quarter that was more cautious than Wall Street expected.