Mexico’s peso swung between gains and losses as investors weighed speculation U.S. policymakers won’t take additional steps to boost growth this year against a retail-sales pickup in the Latin American country’s biggest trading partner.

MEXICO CITY (Dow Jones)--Mexican stocks were lower early Monday as the local bourse opened an hour earlier than usual to align trading with that of the U.S., which moved to daylight-saving time from standard time on Sunday.

Mexico ’s peso gained the most in two months as the Greek government’s deadline for the biggest sovereign restructuring in history passed with a majority of investors signaling their readiness to participate in the swap.