Nathan Reiff has been writing expert articles and news about financial topics such as investing and trading, cryptocurrency, ETFs, and alternative investments on Investopedia since 2016.

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Updated January 29, 2025

Reviewed by

Robert C. Kelly

Reviewed by Robert C. Kelly

Robert Kelly is managing director of XTS Energy LLC, and has more than three decades of experience as a business executive. He is a professor of economics and has raised more than $4.5 billion in investment capital.

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Fact checked by

Ryan Eichler

Fact checked by Ryan Eichler

Ryan Eichler holds a B.S.B.A with a concentration in Finance from Boston University. He has held positions in, and has deep experience with, expense auditing, personal finance, real estate, as well as fact checking & editing.

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