The market run-up won't go on forever.
"We expect to see a pause," said Victoria Fillet-Konrad, chairwoman of Blueprint Financial Planning in Hoboken, New Jersey. "Long-term,we are value investors and the focus is always on individual stocks as opposed to the market as a whole."
That said, don't go into a buying frenzy in hopes of chasing even greater heights. Let a company's fundamentals — including cash flows and balance sheets — drive your purchase decisions, as opposed to the news cycle and social media, said Slott of Ed Slott and Co.
Indeed, on Tuesday, Boeing's stock fell by as much as 1 percent after the president-elect threatened on Twitter to cancel the order for a new Air Force One. The defense contractor's stock recovered the losses later that day.
"This bump in the market is artificial," Slott said. "This isn't based on fundamentals; it's based on news.
"We have a market based on Tweets."