Yes it's called inflation
Sucks
"As we get into 2019, this earnings cycle is going to run its course. The earnings growth will have to slow because the year-over-year comps get so tough," he told CNBC's "Futures Now" on Thursday. "When you've got slower earnings growth and higher interest rates, that's going to knock down equity valuations."
Market bull warns 2019 could turn ugly as inflation grows | CNBC.com