The stock market hasn't peaked yet, Guggenheim's head of investing told CNBC on Friday.

Instead, right now it is going through a "classic seasonal adjustment," said Scott Minerd, the firm's global chief investment officer and chairman of investments. Guggenheim has $265 billion of assets under management.

"Markets tend to continue to rise until after the Fed's last rate increase," he said in an interview with "Power Lunch." The Federal Reserve is expected to raise rates one more time before the end of the year and three times in 2019.

In fact, Minerd anticipates a 15 to 20 percent rally before the bull market ends, tweeting Friday afternoon that "stocks are cheap."

MINERD TWEET

U.S. equities have been hit recently as fears of increasing inflation and rising interest rates trim corporate profit expectations.

On Friday, stocks fell once again. The Dow Jones Industrial Average closed 298 points lower after dropping more than 500 points at its lows of the day. The Nasdaq Composite closed down 2.1 percent and the fell 1.7 percent and briefly entered correction territory.

However, Minerd believes the seasonals are now starting to turn positive.

"History shows us that when we have these fall corrections, the market bottoms 50 percent of the time in October," he noted. "If it doesn't bottom in October, about 30 percent of the time in November."

As for trade war fears weighing on stocks, Minerd said the Trump administration is "deeply concerned" about the behavior of the market.

"It's probably going to soften their position and make them more willing to try to cut a deal with China," he said.