Monday’s attempt by government banks to curb...

Monday’s attempt by government banks to curb the strength of the dollar had a negative effect on the stock and bond markets as the Dow Jones Industrial Average fell more than 20 points. But San Diego stocks seemed to act independently of general trends and made seemingly unrelated moves up and down, said Irving Katz, director of research at Thomas Green/San Diego Securities.

GTI reached a new high of $6.25 last week on heavy volume, with no explanation offered by the company. That was the case as well with Gen-Probe, which was up $1.50 for the week. Molecular Biosystems, which had been depressed for several weeks, recovered somewhat and gained $2.375.

First National also recovered from a sinking spell, gaining $1.875 since Wednesday. Troubled Imperial Corp. of America, which hit a new low of $3 last week, rebounded $.625 despite news reports that bonds issued by ICA were battered in the market. ICA stock has traded as high as $9.125 this year.

On the downside, Sym-Tek Systems recorded a new 1989 low as it dropped $3 Monday to $4.50, on volume of 8,500. This is representative of what can happen when a thinly traded stock encounters only sellers and no buyers.

Mail Boxes Etc. fell an additional $1.75 for the week in continued negative reaction to the adverse court decision in a civil suit brought by the daughter of the founder. The court awarded her $4 million in compensatory damages.

Rohr Industries continued its decline as the market continued to react negatively to Rohr’s poor fourth-quarter earnings and future prospects, falling $1.50 during the past week. Price Co. was down $2 to $42 as analysts were forecasting a slowdown in growth.