If you’re tracking the S&P 500 instead of this fund, you’re leaving money on the table By: MarketWatch March 13, 2019 at 12:09 PM EDT The Invesco QQQ Trust has been a big winner and is more diversified than you might expect. Read More >> Related Stocks: Alphabet-A Alphabet-C Amazon.com Apple Cisco Systems Facebook Intel Corp International Business Machines Microsoft NDX Nasdaq Composite Nasdaq ETF Netflix Oracle Corp S&P 500 ETF Vanguard SPDR S&P 500 ETF Trust