The S&P 500 heads for a losing week on Wall Street as investors rotate out of key technology stocks and into more defensive areas of the market.Dominic Chu is joined on set by Invesco’s Brian Levitt and Advisors Capital Management’s Joanne Feeney to break down the recent tech declines and assess the state of the bull market.Meanwhile, Eamon Javers brings the latest headlines from the conflict in the Middle East while Dan Pickering gives his take on what it all means for global energy prices.