STOCK WATCH

Among 20 of the largest San Gabriel Valley-based companies traded on the New York and American stock exchanges and NASDAQ, 10 gained value, five lost and five remained unchanged Tuesday compared with the same day last week. Here’s how six fared over the past week.

GAINERS

Tue. Point Company Price Change Avery Dennison Corp. 38.50 +1 7/8 Tetra Tech Inc. $20.00 +1 1/2 Staar Surgical Co. 12.00 +1

LOSERS

Tue. Point Company Price Change Wesco Financial Corp. 122.50 -3 1/2 Santa Anita Realty 16.00 - 1/2 Foothill Ind. Bancorp 8.00 - 1/4

S o urce: Joe Lamas of Merrill Lynch, Pierce, Fenner & Smith Inc., Pasadena