In the six-month period ending May 30, the leading index rose 2.2 percent, an annual rate of about 4.5 percent, the Conference Board said.
The trend represents a reversal from the previous six months, when the leading index slipped 1.5 percent or about a 3 percent annual rate.
From November through May, the Coincident Economic Index, which measures current business conditions, rose 0.7 percent, which is an annual rate of about 1.5 percent.
In the previous six months, the CEI was also in decline, dropping 0.3 percent or at an annual rate of 0.6 percent.
In May, the Leading Economic Index for Europe's largest economy rose 0.1 percent to 104.9. The coincident index, also up 0.1 percent, rose to 107.7.