 Nuveen Asset Management LLC lowered its holdings in AAON, Inc. NASDAQ:AAON by 2.0 during the first quarter, according to its most recent disclosure with the Securities and Exchange Commission SEC. The firm owned 162,071 shares of the construction companys stock after selling 3,230 shares during the quarter. Nuveen Asset Management LLC owned 0.31 of AAON ... 