Stocks were up, then down a little and back up again to record highs as investors tried to gauge the effects on the market of the unpredictable President Trump.

For the most part, Trump’s proposals for deregulation, cutting taxes and boosting business have pushed stocks to record highs since the election, particularly in the last few days. The fates of individual companies can rest on the president’s latest tweets of praise or criticism. But overall, the new presidency seems to be reaping benefits for investors.

Although the overall record has been positive with some volatility since the election, some stocks have outshone the pack. Technology companies, financial firms and energy have seen some of the largest increases.

According to Standard & Poor’s returns, the top stock has seen a more than 68 percent increase since the election while other companies that make up the top 10 have seen a gain of at least 34 percent or more.

The top 10 gaining stocks since Nov. 9, 2016, according to S&P, are listed below in ascending order along with the values on Nov. 9 and Feb. 16, along with the dollar and percentage increases.

No. 10. CarMax Inc., KMX, $50.62, $68.28, $17.66, 34.9%