Reuters reports that several companies in Southern California have been hit by the firestorm there. The stocks in these companies have fallen less than the market -- the S&P 500 is down 3.2% -- in the last week. But in one case -- Broadcom (NASDAQ: BRCM) -- investors dumped the stock for reasons unrelated to the fire.

These six public companies have been affected by the fires as follows:

• Jack in the Box (NYSE: JBX). The San Diego corporate headquarters were closed on Monday and Tuesday, though spokesman Brian Luscomb said there were a couple of dozen employees working at the fast food company's building on Tuesday morning. Its stock is up 0.1% in the last week.
• Qualcomm (NASDAQ: QCOM). Few showed up at the San Diego headquarters of the wireless technology and semiconductor developer, where the bulk of its 11,200 worldwide employees work. Its stock is down 2.8% in the last week.
• Broadcom (NASDAQ: BRCM). The semiconductor firm closed its San Diego office, but was open in Irvine. Its stock is down 20.9% in the last week -- due to a downgrade.