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Cryptocurrencies have become the hottest of hot topics — it seems not a day goes by without some Wall Street VIP or financial luminary proclaiming their stance.

Is bitcoin

BTCUSD, +0.62%

  a “fraud” or the future? Are ICOs just a scam? Depends whom you ask. One thing’s for sure, there’s no shortage of opinions.

Here’s what some of the financial-world heavyweights have had to say lately.

Goldman Sachs

GS, -1.07%

 CEO Lloyd Blankfein:

‘Still thinking…’

In a tweet on Oct. 3, Blankfein appeared to signal that the jury is still out on bitcoin, but also cautioned skeptics to consider that the rise of paper money over gold might also have fostered similar doubts from market stalwarts.

Here’s the substance of his tweet: “Still thinking about #Bitcoin. No conclusion-not endorsing/rejecting. know that folks also were skeptical when paper money displaced gold.”

Still thinking about #Bitcoin. No conclusion – not endorsing/rejecting. Know that folks also were skeptical when paper money displaced gold.

— Lloyd Blankfein (@lloydblankfein) October 3, 2017

Meanwhile, Goldman is reportedly exploring a new trading platform that would be centered on trading in bitcoin and its rivals, like ether.

J.P. Morgan Chase & Co.

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 CEO Jamie Dimon:

‘It’s a fraud.’

Dimon said in early September that “bitcoin is not a real thing and it’s solely speculative and that there’s no need for it in the U.S.”

He has also compared the rapid ascent of bitcoin with the 17th-century mania over tulip bulbs — viewed as a classic, textbook bubble — and predicted that things may end just as badly for investors in the decentralized currency, which has been surging over the past year.

“Bitcoin will eventually blow up. It’s a fraud. It’s worse than tulip bulbs and won’t end well,” he said.

Dimon also said he would fire any trader trading bitcoin for being “stupid.”

His comments have caused such a ruckus that Dimon was prompted to proclaim during the bank’s third-quarter earnings call with media that he isn’t going to talk about bitcoin anymore.

“I wouldn’t put this high on the category of important things in the world,” he said.


C, -3.43%

CEO Michael Corbat:

‘Very interested in the technology, not interested in the instrument.’

In an interview with The Nikkei published Oct. 12, Corbat acknowledged the value of blockchain technology, but said he was not interested in the cryptocurrency itself.

“I’m never dismissive of new things. But like many new things, its original application may not or likely won’t be the end state. When we look at bitcoin, we all think and believe that the underlying blockchain technology [is] very valuable. When I look at bitcoin itself, I struggle a bit. What is it? Is it a currency? I don’t necessarily think it is. Is it a speculative investment? Probably more so.”

Morgan Stanley

MS, -1.20%

 CEO James Gorman:

‘More than just a fad’

Gorman came out on the record in late September to argue that the cryptocurrency phenomenon at least is “more than just a fad.”

“I haven’t invested in it. I’ve talked to a lot of people who have. It’s obviously highly speculative but it’s not something that’s inherently bad. It’s a natural consequence of the whole blockchain technology.”

Gorman has said some of the potential attractions of a digital currency are “the privacy protections it gives people,” adding that it is “interesting because what it says to the central banking system about controlling that.”

Warren Buffett, CEO of Berkshire Hathaway

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‘It’s a mirage…’

Way back in 2014 (a century ago in cryptocurrency time), the Oracle of Omaha said this about bitcoin on CNBC:

“Stay away from it. It’s a mirage, basically. It’s a method of transmitting money. It’s a very effective way of transmitting money and you can do it anonymously and all that. A check is a way of transmitting money too. Are checks worth a whole lot of money? Just because they can transmit money?”


UBS, +0.12%

  Chairman Axel Weber:

‘Only a transaction currency”

“I get often asked why I‘m so skeptical about bitcoin, it probably comes from my background as a central banker,” Weber said at a conference in Zurich on Oct. 4.

“The important function of a currency is, it’s a means of payment, it has to be generally accepted, it has to be a store of value and it’s a transaction currency. Bitcoin is only a transaction currency.”

BlackRock CEO Larry Fink:

‘I am a big believer in the potential…’

The rapid ascent of cryptocurrencies “identifies how much money laundering there is being done in the world,” Fink said during a Bloomberg interview with the Wall Street luminary at the BlackRock Fixed Income ETF conference in New York on Oct. 3.

However, he also said: “I am a big believer in the potential in what cryptocurrencies can do.” He said he saw “huge opportunities,” but that presently the atmosphere around bitcoin was “more speculative.”

Ray Dalio, founder of Bridgewater Associates, the world’s largest hedge fund:

‘Bitcoin is a bubble.’

Dalio said in September that cryptocurrencies like bitcoin meet his firm’s criteria for a market bubble, in part because they don’t serve as a reliable storehold of value due to their extreme volatility and signs that people buy them with the sole of intent of selling them later on at a higher price.

“Bitcoin is a highly speculative market,” he told CNBC. “Bitcoin is a bubble.”

Fidelity Investments CEO Abigail Johnson:

‘We need to address the barriers…’

Johnson has come out as a proponent of cryptocurrencies, and has made cryptocurrency balances visible on the investment manager’s website for customers who hold an account with Coinbase — a popular crypto exchange.

“I like to think that huge new markets and products will be built on these platforms,” Johnson said at Consensus, a blockchain-centric conference put on by digital currency site CoinDesk. “But before that can happen, we need to address the barriers there are to adoption — and there are several.”

We laid out the four primary roadblocks she identified here.