Good press and solid earnings helped boost Enova Systems and Iris International while a gloomy guidance and bad earnings hurt PeopleSoft and Emak Worldwide.

Torrance-based Enova Systems Inc. rode a wave of good press after a pair of buses delivered to a Florida school district sported the company’s new hybrid drive-train system. Shares in Enova shot up 26 percent the day after the announcement and gained 21 percent for the week, closing Friday at $4.28.

Iris International Inc., a Chatsworth-based urinalysis clinic manager, transformed a 16 percent gain in fourth quarter sales to a 14 percent surge in shares for the week closing out at $12.42.

Van Nuys-based semiconductor testing firm Trio Tech International continued to gain, adding 9.4 percent for the week thanks to institutional buying, which now accounts for about 25 percent ownership in the company’s shares. However, the stock has been volatile, trading between $5.86 and $17.50 over the past 52 weeks.

On the other end was PeopleSoft Inc., which was slammed after the Los Angeles -based outsourcing services provider reported a first quarter guidance below Wall Street’s expectations losing more than 39 percent on Friday alone. Investors chopped 32 percent off of the company’s shares for the week, leaving it at $13.65.

Emak Worldwide, an L.A.-based global marketing firm, also lost 10 percent a week after reporting lower profit and revenues; closing the week out at $4.80 per share.