The US stock rally may cool off as focus shifts to Q2 GDP and private jobs data. The tech sector could face selling pressure due to earnings-related sell-offs from companies like HP, Inc. The market is also awaiting ADP's private payrolls report and preliminary Q2 GDP data. The Nasdaq Composite and the S&P 500 indices ended at their highest levels since early August. In premarket trading, the SPDR S&P 500 ETF Trust and the Invesco QQQ ETF fell slightly. Stocks in focus include HP, Box, Inc., Ambarella, Inc., Brown-Forman Corporation, and Patterson Companies, Inc.