The Los Angeles Business Journal’s index of largest local public companies closed up for the week ended Oct. 22, as encouraging earnings boosted the overall markets.

The weighted LABJ index rose 0.86 percent to 114.78, with gainers ahead of decliners 90 to 83.

Among the biggest gainers was Tix Corp. which jumped 25 percent to 94 cents. The Studio City ticketing and events promotion company on Friday began trading on the Pink Sheet’s new OTCQX market after moving from the Nasdaq in order to save money.

Sport Chalet Inc. gained 24 percent to $2.44. The La Canada Flintridge sporting goods retailer announced a new $65 million credit agreement that should lower its annual interest payments by about $800,000.

Xxia added 10 percent to close at $15.19 after the Calabasas telecom test systems provider announced better-than-expected third quarter earnings and record revenue.

Obagi Medical Products Inc. rose 8.6 percent to $12.25 after the Long Beach pharmaceutical skin care company announced that its chief executive had resigned.

Among the decliners was Joe’s Jeans Inc. The Commerce premium denim manufacturer fell 8.6 percent to $1.81 after reporting disappointing third quarter earnings.

Occidental Petroleum Corp. fell 6 percent to $79.58. The Los Angeles oil company reported a 28 percent increase in third quarter profit, but the entire sector was hurt by speculation that prices could slide.