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ALMOST always. QQQ beats[ +goes down more on downside] but i favor qqq over SPY mostly........................................................................................................ QQQ has done better than SPY this week also.
True, but QQQ took a big hit in 2000 and didn't fully recover until just a few years ago (April 2000 until Dec 2014). SPY has had a better return so far this year. QQQ far outperformed SPY over the past few years...but mostly just making up for the lost time since 2000.