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KEY POINTS CNBC’s Jim Cramer said not to underestimate the small gains stocks have put up in recent

美股研究社消息，美港电讯APP 5日讯，当地时间2021年3月4日，$亚马逊(AMZN)$ (AMZN.O)在英国伦敦开设了一家没有收银员的便利店，这也是该公司自动结账技术在美国之外的首次扩张，吸引不少消费者选购体验。据悉，这是一家规模为2500平方英尺的亚马逊生鲜店，这家商店将使用一系列摄像头和其他传感器来跟踪购物者从货架上取下的商品，并在购物者离开后用信用卡完成支付。 本文来源：美股研究社，转载请注明版权

KEY POINTS “If you really want to beat the big institutions at their own game, you don’t do it with

Federal Reserve Chairman Jerome Powell speaks twice to Congress this week as part of mandated semiannual testimony.Normally nonevents for the market, the central bank leader’s comments will be viewed closely this week for how he views this year’s run-up in bond yields.Investors worry that too quick of a rise might force the Fed to tighten policy too quickly, while a complacent Fed also would pose overheating risks.Rising bond yields and accompanying inflation fears are adding a level of drama to