QQQ, charted above, is one of the world's most popular ETFs and tracks the Nasdaq 100, which is almost certainly the world's best performing index over almost any timescale you care to choose. If you do nothing else, buying some shares in this ETF is a great thing to do. QQQ is doing well because the Nasdaq 100 is doing well. The Nasdaq 100 is doing well because of its heavy weighting of the world's most successful big US technology shares. They are leading an accelerating global technology revolution, which is driving the Nasdaq 100 relentlessly higher, which is powering the performance of the QQQ ETF.
