Yesterday DJIA drop -700 points and major indexes were down more than -2%. Leading index Nasdaq and its top100 QQQ also show signs of trouble to maintain its uptrend. Although it needs a downside follow through with a high volume breakdown to confirm the trend to downside, it is a warning signal that extended rally is near late stage. Watch out QQQ as a leading indicator with its components like AMZN, AAPL, MSFT, GOOGL, FB to see their behavior in terms of pattern and volume in order to get confirmation on trend change.