The past few years have been the exception to the norm rather than the norm. A shakeup could be brewing.Even investors who only keep casual tabs on the stock market probably know most of its recent gains have been driven by Nasdaq-listed stocks such as Microsoft and Nvidia. Indeed, all seven of the so-called "Magnificent Seven" stocks leading the charge throughout the past few years are Nasdaq names. This dynamic makes an exchange-traded fund (ETF) like the Invesco QQQ Trust (QQQ -0.70%) a compelling prospe ...