Among the stock activity stories for Tuesday, Oct. 16, from AP Business News:
_ Shares of WD-40 Co. fell after the maker of spray lubricant and cleaning products reported disappointing quarterly results and a sharp decline in sales to European customers.
_ Shares of Tumi Holdings Inc., which makes pricey luggage, fell after the company said some shareholders, including the company's CEO and CFO, plan to sell stock.
_ Shares of Isis Pharmaceuticals Inc. fell as regulators raised questions about links between the company's experimental cholesterol drug Kynamro and cancer.