Democratic presidential hopeful Massachusetts' Senator Elizabeth Warren speaks to members of SEA/SEIU Local 1984, state employees, at the Holiday Inn in Concord New Hampshire, after signing papers to officially enter the New Hampshire Primary race on November 13, 2019.

U.S. presidential hopeful Elizabeth Warren's proposed wealth tax may not come to pass even if she's elected, says prominent investor Mark Mobius who added that the markets would still fall anyway.

Warren, a front-runner for the Democratic presidential nomination, has made reining in the excesses of the wealthiest Americans and largest U.S. businesses a centerpiece of her campaign. Several well-known business executives and investors have criticized her plans, saying a Warren presidency would harm financial markets and the economy.

"I don't think this wealth tax is going to be a big deal, frankly," Mobius, founding partner of Mobius Capital Partners, told CNBC's "Global Squawk" on Wednesday.

"Because if you look at who's giving money to Warren: wealthy people. So, they realize that it's talk," he added. "At the end of the day, when it comes to actual action, it's not going to be significant. I don't see a wealth tax coming in."

Warren's campaign did not immediately respond to a request for comment outside office hours.