The S&P 500 was on track to open at all-time highs on Tuesday, building on a record-setting rally amid thin trading volumes, with investors unshaken by Omicron-driven travel disruptions and store closures.
The S&P 500 and Nasdaq on Monday posted their best four-day rally since November 2020, with the S&P 500 scaling a peak as an upbeat outlook on the U.S. economy helped investors look past thousands of flight cancellations and Apple Inc. shutting its New York stores due to surging cases.





