Bank of Nova Scotia lessened its position in shares of American Airlines Group Inc. (NASDAQ:AAL – Get Rating) by 18.9% in the first quarter, according to the company in its most recent 13F filing with the Securities and Exchange Commission. The firm owned 269,621 shares of the airline’s stock after selling 62,795 shares during the period. Bank of Nova Scotia’s holdings in American Airlines Group were worth $4,918,000 as of its most recent filing with the…