S&P 500 Hits Record to End Best First Quarter Since 2019

• The S&P 500 ended at a record high Thursday to cap off its strongest first quarter in five years on Thursday.
• Initial filings for unemployment came in lower than expected for the week up to March 16.
• The latest GDP estimate for the fourth quarter came in at 3.4% year-over-year.

US stocks were little changed on Thursday, closing mixed to end a short week, though each of the three benchmark indexes cappe