Texas Permanent School Fund reduced its position in shares of United Airlines Holdings, Inc. (NASDAQ:UAL – Get Rating) by 6.0% during the 1st quarter, according to the company in its most recent 13F filing with the Securities & Exchange Commission. The firm owned 42,000 shares of the transportation company’s stock after selling 2,662 shares during the quarter. Texas Permanent School Fund’s holdings in United Airlines were worth $1,947,000 at the end of the…