Sigma Planning Corp lowered its stake in United Airlines Holdings, Inc. (NASDAQ:UAL – Get Rating) by 22.6% during the first quarter, HoldingsChannel reports. The firm owned 6,358 shares of the transportation company’s stock after selling 1,860 shares during the period. Sigma Planning Corp’s holdings in United Airlines were worth $295,000 at the end of the most recent quarter.
A number of other institutional investors and hedge funds also recently modified…