Stocks reached all-time highs over the summer and have built on those gains since the election. On Monday the Dow Jones industrial average, Standard & Poor’s 500, and Nasdaq composite all set records. So did the Russell 2000, an index of smaller companies, and the S&P’s small- and mid-size company indexes.

The last time all those indexes set records on the same day was Dec. 31, 1999, according to Ryan Detrick, senior market strategist for LPL Financial.

The Dow rose 88.76 points, or 0.5 percent, to 18,956.69. The S&P 500 climbed 16.28 points, or 0.7 percent, to 2,198.18. The Nasdaq composite jumped 47.35 points, or 0.9 percent, to 5,368.86.