A monitor displays S&P 500 market data during the Sweetgreen initial public offering (IPO) in front of the New York Stock Exchange (NYSE) in New York, U.S., on Thursday, Nov. 18, 2021. Sweetgreen Inc., perhaps the most well-known of the salad chains, is capitalizing on the reopenings, and the booming market for new listings, with an initial public offering that’s surpassed expectations. Photographer: Michael Nagle/Bloomberg
A monitor displays S&P 500 market data during the Sweetgreen initial public offering (IPO) in front of the New York Stock Exchange (NYSE) in New York, U.S., on Thursday, Nov. 18, 2021. Sweetgreen Inc., perhaps the most well-known of the salad chains, is capitalizing on the reopenings, and the booming market for new listings, with an initial public offering that’s surpassed expectations. Photographer: Michael Nagle/Bloomberg

Las empresas del S&P 500 están superando las estimaciones de ganancias al menor ritmo en casi dos años, una tendencia que podría apuntar a descensos para el índice de referencia de la renta variable estadounidense.