 Citigroup Inc. increased its holdings in Nicolet Bankshares Inc NASDAQ:NCBS by 68.1 during the 4th quarter, according to its most recent Form 13F filing with the Securities and Exchange Commission SEC. The fund owned 1,923 shares of the banks stock after purchasing an additional 779 shares during the quarter. Citigroup Inc.s holdings in Nicolet Bankshares ... 