Will this mark the top for airlines and activist investors? By: MarketWatch April 30, 2015 at 16:55 PM EDT This week’s new ETFs include one tracking airlines and another mimicking activist investors like Carl Icahn and Bill Ackman. Read More >> Related Stocks: American Airlines Gp Delta Air Lines GX Guru Index ETF GX MSCI Pakistan ETF Southwest Airlines Standard & Poors 500 U S Global Inv Inc US Global Jets ETF