Many San Diego stocks last week made...

Many San Diego stocks last week made moves irrespective of any news developments, according to Irving Katz, director of research for San Diego Securities.

Biotechnology stocks in particular showed strength, according to Katz. Synbiotics gained two points to 14 1/2, Xytronyx was up seven-eighths to 15 3/4 and Syntro was up three-eighths to 4 1/8.

On the negative side, Molecular Biosystems, which was a strong gainer the previous week, fell half a point to 6 3/4.

Beeba’s Creations was down 1 3/4 to 14 3/4, reversing its gain of a week ago. The stock continues to trade in the 14-to-17 price range.

Linear Corp. was up 1 3/8 to 11 5/8, matching its 52-week high, while Maxwell Laboratories gave up some of its recent gain, falling 1 to 15. Energy Factors recovered by rising 2 1/2 points to 12.

Rohr Industries was up 1 1/8 to 30, a continuance of a rise of nearly 10% since its strike settlement.

Foodmaker Inc., owner of Jack in the Box restaurants, which went public last week at 13 1/2, closed at 13 Monday.

Great American First Savings Bank was up one-half to 24 after a successful presentation before a group of New York securities analysts, Katz said. Great American also reported an $80-million gain on the sale of loans and mortgage securities and a successful, $15-billion European offering.

Cousins Home Furnishings was up three-eighths to 2 5/8, on the announcement of a $5-million working capital line of credit from Lloyds Bank.