Elon Musk says

(Bloomberg) — Elon Musk sees a lot to like at the shortest end of the Treasury curve.

On Thursday, Musk, the chief executive of Tesla Inc. and owner of X, the social-media platform formerly known as Twitter, said that short-term Treasury bills are “a no-brainer.”

The comments were in response to a tweet from Pershing Square Capital Management’s Bill Ackman.

Late Wednesday, Ackman said that his firm was short 30-year Treasury bonds, both as a hedge against the impact of higher rates on stocks and also as a “standalone” bet. Ackman added on Thursday that Pershing uses shorter-term bills for cash management, echoing Berkshire Hathaway Inc. Chairman and CEO Warren Buffett.

Berkshire has no plans to stop buying Treasury bills following a downgrade of the US by Fitch Ratings this week, Buffett said Thursday.