Should you buy the dip in tech? Veterans of the dot-com era share 5 ways to find winners. * Nvidia has been drop more than 19% in 30 days vs S&P500 was more 13% $NVIDIA Corp(NVDA)$ $S&P 500(.SPX)$ MW Should you buy the dip in tech? Veterans of the dot-com era share 5 ways to find winners. By Laila Maidan Rob Arnott and other market pros offer their best tips for finding quality names while the stock market is in red The technology sector is bleeding red. The "Magnificent Seven" collectively lost $1.55 trillion in market capitalization this week - their largest weekly market-cap decline on record. The rest of the U.S. stock