ANGELA WEISS/AFP
- Investors boosted stocks after Donald Trump won a second term.
- But investors shouldn't depart from their long-term investing plan, Morningstar's Dave Sekera says.
- Stock valuations are at some of their highest levels in 15 years, the strategist says.
Investors had a field day on Wednesday, plowing money into the stock market following the news that former president Donald Trump had won a second term. The S&P 500 rose 2.5%, while the Dow...