 Tech stocks are among the gainers. Both the Nasdaq and S&P 500 are slated for weekly gains. Dow member Nike stock is tumbling 20% after the sneaker and sportswear company reported a drop in quarterly revenue and warned that sales could fall significantly over the next year. Shares of Walgreens Boots Alliance are up slightly after tumbling over 20% yesterday. It was the stock's largest percentage decline on record after the drugstore chain unveiled plans that could lead to the closure of thousands of unsold