Katherine Greifeld

Stay informed with Katherine Greifeld’s coverage and analysis for Fortune.

  • John C. Bogle, founder of the Vanguard Group Inc., speaks at a portfolio manager conference in New York, U.S., on Thursday, Feb. 16, 2012. Bogle, who popularized index investing, said lower tax rates for certain types of gains earned by private equity firms are “ridiculous.” Photographer: Scott Eells/Bloomberg via Getty ImagesFinance

    Vanguard unfazed by boycott calls after it refuses to offer Bitcoin ETFs: ‘They won’t lose a single 401k plan over it’

    By Katherine Greifeld and Bloomberg
  • Cathie Wood, chief executive officer and chief investment officer of ARK Investment Management LLC, speaks during the Sooner Than You Think conference in the Brooklyn borough of New York, U.S., on Tuesday, Oct. 16, 2018. From AI-enabled robo-investing to the implications for retail of a cashless world to the impact on monetary policy if and when governments move to digital tender, technological innovation is rapidly changing our relationship to money, creating major new opportunities but also creating poorly understood risks. Photographer: Alex Flynn/Bloomberg via Getty ImagesFinance

    Cathie Wood’s Ark fund takes a beating as tech stocks fall

    By Katherine Greifeld, Lu Wang, and others
  • Daytraders have been trying to catch the bottom for airline stocks.Finance

    Airline ETF JETS has seen assets soar 2,930% thanks to ‘bored’ millennial day traders

    By Bloomberg and Katherine Greifeld