Westamerica Bancorp. share roared to life Monday after Thomas K. Brown of Donaldson. Lufkin & Jenrette Securities Corp. initiated coverage with a "buy" rating.

The stock, stuck in a light trading range most of the year, jumped $2.365 -- or 9.25% -- to $28 before easing back to $27.375 in late trading.

Subscribe Now

Access to authoritative analysis and perspective and our data-driven report series.

14-Day Free Trial

No credit card required. Complete access to articles, breaking news and industry data.