(CNBC) U.S. equities closed mostly higher on Thursday after a wild session as investors examined the details of the tax-reform plan proposed by Republicans.
The plan would permanently lower the corporate tax rate to 20 percent. It would also keep retirement savings plans like the popular 401(k) intact.
The Dow Jones industrial average closed 81.25 points higher at 23,516.26 — a record — after briefly falling 84 points. The index also hit a record intraday high. Shares of Boeing were the best-performers on the 30-stock index.
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"People are building their frameworks, but no one knows where this is going to go," said Jeremy Bryan, portfolio manager at Gradient Investments.