Caleb Mutua

Stay informed with Caleb Mutua’s coverage and analysis for Fortune.

  • A Wall Street sign near the New York Stock Exchange (NYSE) in New York, US, on Thursday, May 22, 2025. A surge in long-term bond yields is once again threatening to upend a crowded hedge-fund bet that Treasuries will perform better than interest-rate swaps. Photographer: Michael Nagle/Bloomberg via Getty ImagesFinance

    Junkiest junk is offering a warning sign for debt

    By Josyana Joshua, Eliza Ronalds-Hannon, and others
  • Boeing Co. workers and supporters set up a striking station outside the Boeing Co. manufacturing facility in Renton, Washington.Finance

    Boeing would be biggest-ever US ‘fallen angel’ if cut to junk

    By Caleb Mutua and Bloomberg
  • Bill Gates speaksFinance

    Bill Gates says he’s ready to plow billions into a next-gen nuclear plant being built by his startup

    By Caleb Mutua and Bloomberg
  • Kern County, CA – March 23: LADWPs Pine Tree Wind Farm and Solar Power Plant in the Tehachapi Mountains Tehachapi Mountains on Tuesday, March 23, 2021 in Kern County, CA.(Irfan Khan / Los Angeles Times via Getty Images)Finance

    Bond investors face baffling $2 trillion rainbow of ethical debt

    By Rebecca Choong Wilkins, Caleb Mutua, and others