STOCK WATCH

Among 20 of the largest San Gabriel Valley-based companies traded on the New York and American stock exchanges and NASDAQ, eight gained value, seven 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 Ameron Inc. $33.75 +1 1/4 Santa Anita Realty 16.75 +1 Staar Surgical Co. 9.50 + 3/4

LOSERS

Tue. Point Company Price Change Southwest Water Co. 8.25 - 3/4 Foothill Bancorp. 7.75 - 1/2 CenFed Financial 15.75 - 1/2

Source: Joe Lamas, Merrill Lynch, Pierce, Fenner & Smith Inc., Pasadena