Investors reportedly are running out of reasons to keep buying U.S. stocks amid a growing number of warning signs.

While it is too soon to call the end of the eight-year bull market, investors, traders and analysts told The Wall Street Journal that “the indiscriminate optimism that characterized the postelection rally is evaporating.”

 There is now more that can go wrong than right, the Journal explained.

“Political rifts, including President Donald Trump’s deteriorating relationship with several business leaders in the wake of the Charlottesville, Va., demonstrations, have magnified investors’ doubts about the administration’s ability to accomplish its agenda, in particular the tax cuts they had anticipated would boost corporate profits,” the Journal explained.

The S&P 500 ended up slightly on Monday after two days of declines, though simmering tensions between the United States and North Korea kept investors on edge and a drop in oil prices weighed on energy shares,