• Home
  • Latest
  • Fortune 500
  • Finance
  • Tech
  • Leadership
  • Lifestyle
  • Rankings
  • Multimedia
Some Fortune Crypto pricing data is provided by Binance.
The CoinsBitcoin

‘Rat Poison Squared.’ Warren Buffett Really Doesn’t Like Bitcoin

By
David Meyer
David Meyer
Down Arrow Button Icon
May 7, 2018, 7:39 AM ET

The Oracle of Omaha still doesn’t like Bitcoin. Not one little bit.

Warren Buffett on Saturday described the top cryptocurrency as “probably rat poison squared,” and on Monday he told CNBC that it’s “creating nothing.”

“When you’re buying non-productive assets, all you’re counting on is the next person is going to pay you more because they’re even more excited about another next person coming along,” the Berkshire Hathaway boss said.

.@WarrenBuffett on bitcoin just now: “it’s probably rat poison squared.” #brk2018

— Becky Quick (@BeckyQuick) May 5, 2018

Rewind a few months, and Buffett was declaring that cryptocurrencies in general “will come to a bad ending.” Go back several years further, and he was dubbing Bitcoin “a mirage,” arguing that “the idea that it has some huge intrinsic value is just a joke.”

Do cryptocurrency investors care what Warren Buffett has to say on the subject? The price is certainly down since his broadside, though as ever it is hard to say what has caused Bitcoin’s latest fluctuations.

On Saturday, Bitcoin looked like it could break through the $10,000 barrier for the first time in two months, but since then it has slumped to a current value of around $9,330.

The cryptocurrency market is largely down in the last 24 hours—Bitcoin by 2.4%, Ethereum by 6.8%, Ripple by 5.3% and Bitcoin Cash by 6.5%.

On Sunday, Nikkei reported that Japan’s financial regulators were planning stricter review standards for cryptocurrency exchanges. CNBC also reported Sunday that DataTrek Research co-founder Nick Colas—the first analyst on Wall Street to have covered Bitcoin—was advising that now is not the right time to buy Bitcoin, as growth in new entrants to the market is shrinking.

This article was updated to include the detail about Japanese regulators.

About the Author
By David Meyer
LinkedIn icon
See full bioRight Arrow Button Icon

Latest in The Coins

Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025

Most Popular

Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Rankings
  • 100 Best Companies
  • Fortune 500
  • Global 500
  • Fortune 500 Europe
  • Most Powerful Women
  • Future 50
  • World’s Most Admired Companies
  • See All Rankings
Sections
  • Finance
  • Leadership
  • Success
  • Tech
  • Asia
  • Europe
  • Environment
  • Fortune Crypto
  • Health
  • Retail
  • Lifestyle
  • Politics
  • Newsletters
  • Magazine
  • Features
  • Commentary
  • Mpw
  • CEO Initiative
  • Conferences
  • Personal Finance
  • Education
Customer Support
  • Frequently Asked Questions
  • Customer Service Portal
  • Privacy Policy
  • Terms Of Use
  • Single Issues For Purchase
  • International Print
Commercial Services
  • Advertising
  • Fortune Brand Studio
  • Fortune Analytics
  • Fortune Conferences
  • Business Development
About Us
  • About Us
  • Editorial Calendar
  • Press Center
  • Work At Fortune
  • Diversity And Inclusion
  • Terms And Conditions
  • Site Map

© 2025 Fortune Media IP Limited. All Rights Reserved. Use of this site constitutes acceptance of our Terms of Use and Privacy Policy | CA Notice at Collection and Privacy Notice | Do Not Sell/Share My Personal Information
FORTUNE is a trademark of Fortune Media IP Limited, registered in the U.S. and other countries. FORTUNE may receive compensation for some links to products and services on this website. Offers may be subject to change without notice.


Latest in The Coins

A picture of Bitcoins
The CoinsCryptocurrency
The crypto market may be out of gas as Bitcoin dips under $100k and altcoins plummet
By Carlos GarciaNovember 6, 2025
2 months ago
Brad Garlinghouse smiles at the camera.
The CoinsVenture Capital
Ripple says Fortress, Citadel Securities invest $500 million
By Emily Mason and BloombergNovember 5, 2025
2 months ago
A man in a black hoodie and glasses is speaking
The CoinsCryptocurrency
Altcoin giant Animoca Brands aims to go public next year, listing will test investor appetite for exotic crypto assets
By Carlos GarciaNovember 4, 2025
2 months ago
A man tries to pull a coin with a BTC logo up a mountain.
The CoinsBitcoin
Crypto’s big ‘Uptober’ ends with a whimper, Bitcoin down 4%
By Carlos Garcia and Ben WeissOctober 31, 2025
2 months ago
Two men are looking at monitors while trading
The CoinsCryptocurrency
Crypto’s second wave of ETFs arrives, investors snap up new Solana offering
By Carlos GarciaOctober 31, 2025
2 months ago
Michael Saylor on stage at a Bitcoin conference.
CompaniesBitcoin
Michael Saylor boosts yield, says Strategy is at an ‘inflection point’
By David Pan, Judy Lagrou and BloombergOctober 30, 2025
2 months ago

Most Popular

placeholder alt text
Real Estate
Mark Zuckerberg gifted noise-canceling headphones to his Palo Alto neighbors because of the nonstop construction around his 11 homes
By Dave SmithDecember 25, 2025
24 hours ago
placeholder alt text
Success
Chinese billionaire who has fathered more than 100 children hopes to have dozens of U.S.-born boys to one day take over his business
By Emma BurleighDecember 25, 2025
1 day ago
placeholder alt text
Personal Finance
Trump turns government into giant debt collector with threat to garnish wages on millions of Americans in default on student loans
By Annie Ma and The Associated PressDecember 24, 2025
2 days ago
placeholder alt text
Economy
Even if the Supreme Court rules Trump's global tariffs are illegal, refunds are unlikely because that would be 'very complicated,' Hassett says
By Jason MaDecember 21, 2025
5 days ago
placeholder alt text
Retail
Trump just declared Christmas Eve a national holiday. Here’s what’s open and closed
By Dave SmithDecember 24, 2025
2 days ago
placeholder alt text
Success
Meet the millennial father of six who rebuilt his life through the trades—and questions America's obsession with college
By Eva RoytburgDecember 24, 2025
2 days ago