The Los Angeles Business Journal’s index of the 200 largest local public companies closed down for the week ended Jan. 16. The week’s losses were tied to poor retail sales and jobs data, and a Friday rally wasn’t strong enough to erase them.

The weighted LABJ index was down 5.5 percent to $93.42 Friday compared with a week ago, with decliners outpacing gainers 126 to 52.

Glendale-based casual restaurant operator DineEquity Inc. fell 28 percent to $9.76, as other companies in the sector reported poor sales.

Shares of Bidz.com Inc., a Culver City online jewelry retailer, were downgraded by AmTech Reseach and lost 27 percent to $3.04. Pasadena-based East West Bancorp Inc., downgraded by Barclay’s Capital, fell nearly 24 percent to $9.98.

Maguire Properties Inc. ended the week down 14 percent to $2.45, as losses from an earlier analyst downgrade were not reversed by news that founder Robert F. Maguire III increased his ownership in the Los Angeles real estate investment trust and its operating partnership to more than 19 percent.

On the upside, Motorcar Parts of America, a Torrance provider of alternators and starters, was the biggest gainers among major index stock, up 40 percent to $5.10; the gain wasn’t tied to any specific news. Likewise, Overhills Farms Inc., a Vernon manufacturer of frozen and prepared foods for food service use, added more than 15 percent to $4.95.