Zurcher Kantonalbank Zurich Cantonalbank increased its stake in shares of Costco Wholesale Co. (NASDAQ:COST – Free Report) by 3.5% in the 3rd quarter, according to its most recent 13F filing with the Securities and Exchange Commission (SEC). The fund owned 153,286 shares of the retailer’s stock after purchasing an additional 5,174 shares during the period. […]