"Trees don't grow to the sky. Definitely not uninterrupted," Peltz said at the CNBC Delivering Alpha conference when asked whether stocks can continue to zoom higher in the wake of Donald Trump's election. "There will be something that will upset it," Peltz said.

Stocks are more expensive than they've been 80% of the time since 2010, Morningstar says.

U.S. stocks drifted to a mixed finish Wednesday after the latest inflation update boosted hopes that more help for the economy will arrive next month through a cut to interest rates. The S&P 500 was nearly unchanged and edged up by less than 0.

U.S. stocks slipped as juice ran out for the torrid “Trump trade” that swept Wall Street following Donald Trump’s presidential victory

The five-day election rally sputtered on Tuesday as the market turned its attention toward incoming economic data. Some parts of the Trump trade maintained momentum, with crypto and FX traders cheering on the president-elect's policies.

US stocks added to records on Tuesday, with the blistering rally since last week slowing slightly as traders prepared to take in new inflation data this week. A five-day rally hel