Bill Gross: My success may be impossible to repeat in today's world

Bill Gross told CNBC his massive success will be difficult, if not impossible, for newcomers to repeat, given how much the investment landscape has changed.

"These days ... certainly the returns that are available to investors, not only in the bond market, but in the stock market, are much more difficult. The doubling these days are miraculous, if at all," Gross said in an interview to be aired Tuesday at 2 p.m. ET on " Power Lunch ."

Gross founded investment management giant Pimco in 1971 and ran it until 2014. As of March, Pimco had $1.5 trillion in assets under management.

Gross, once known as "The Bond King" for his success investing in the bonds market, said millennials starting off in finance should "reach for the stars, but to know that, in many cases, they're light years away, and that success in the finance business … is a much more difficult proposition now with interest rates near zero, as opposed to when they were 14 or 15 percent when I sort of got my sea legs."

"They have to be patient. It's possible to succeed in this business, but Horacio Alger stories of long ago are probably going to be difficult to repeat."

This is the third part of a three-part series of exclusive CNBC interviews with Bill Gross. See the first and second parts here.

— CNBC's Brian Sullivan contributed to this report.

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