NEW YORK—The S&P 500 and Dow Jones Industrial Average posted closing record highs on the first trading day of the year on Monday, helped by gains in Tesla Inc. and bank shares.
Apple Inc. became the first company to hit a $3 trillion market capitalization but ended the day slightly below that. Its shares ended up 2.5 percent at $182.01 after rising as high as $182.88 during the session.
