Columbia Wagner Asset Management, in a newly amended filing with the SEC, reported raising its position in Blackhawk Network Holdings Inc (NASDAQ : HAWK) to almost 2.2 million shares, versus around 2.1 million disclosed in its latest 13F. The upgraded stake amasses 18.9% of Blackhawk's common stock. In a second filing, Columbia Wagner revealed closing its exposure in Abercrombie & Fitch Co. (NYSE : ANF). According to the latest 13F, the fund held around 2.3 million shares of the company. Disclosure: none