NEW YORK (AP) — Stocks closed higher on Wall Street, ending a four-day losing streak.

The S&P 500 added 1.2% Monday. The benchmark index is coming off its worst week in nearly a year and a half. The Dow Jones Industrial Average and the Nasdaq composite also rose 1.2%.

Boeing helped lead the market after reaching a tentative deal with its largest union on a new contract. Palantir Technologies and Dell Technologies rose after being named to join the S&P 500.

Yields held relatively steady in the bond market ahead of reports coming this week on inflation at both the wholesale and consumer levels.