The Los Angeles Business Journal’s index of the largest local public companies closed up for the week ended June 18 as volatile overall market rose despite mixed economic news.

The weighted LABJ index closed up 1.78 percent to 115.53, with gainers outpacing decliners 131 to 45.

One the largest gainers was MPG Office Trust, which jumped nearly 22 percent to $3.36 after an analyst upgraded Los Angeles real estate investment trust, which has been selling non-core office buildings to reduce debt.

Korn/Ferry International climbed 16 percent to $16.02 after the Los Angeles executive recruiting giant posted better-than-expected fiscal fourth-quarter results and received an analyst’s upgrade.

A better-than-expected fiscal fourth quarter also boosted shares of Motorcar Parts of America, Inc., a Los Angeles remanufacturer of alternators and starters for cars and light trucks. Shares ended the week up 13 percent to $6.97

Among the largest decliners was Pasadena nanotechnology company Arrowhead Research Corp. which slid more than 21 percent to $1.30 after announcing a secondary offer of stock and warrants expected to raise more than $8.6 million.

Los Angeles home builder KB Home fell 7 percent to $12.30 after a Wall Street analyst lowered his expectations for the sector.