Leadership watch. Top-15 $QQQ holdings comprise 70% of index. 12 of 15 are beating $SPY, but just 8 are beating $QQQ according to our monthly measure of relative strength: $MSFT $AAPL $AMZN $NVDA $NFLX $ADBE $PYPL $TSLA https://t.co/X1BG2U6MUp