Share of California Pizza Kitchen Inc. rose Friday on news that a San Francisco hedge fund had increased its stake in the Los Angeles restaurant chain to 7.3 percent of shares earlier this month.

Farallon Capital Management LLC reported in a Securities and Exchange Commission filing that it now owned about 2.1 million California Pizza shares. Farallon first reported acquiring a 5.3 percent stake in the gourmet pizza company on Dec. 3.

In the earlier filing, Farallon said the stock was acquired for investment purposes and not to acquire control of the company.

California Pizza shares were up 18 cents, or 1 percent, to $15.50 in midday trading. The stock price is down 30 percent for the year.