Warren Buffett's Berkshire Hathaway dumped a portion of its Visa and Mastercard holdings and increased exposure in Nubank, the largest fintech bank in Brazil that's also popular among the country's Bitcoin investors.

In a securities filing late Feb. 14, the industrial conglomerate disclosed that it had purchased $1 billion worth of Nubank Class A stock in Q4/2021. On the other hand, it sold $1.8 billion and $1.3 billion worth of Visa and Mastercard stock, respectively, signaling a shift away from credit companies to gain exposure in their fintech rivals.

Buffett, the so-called "Oracle of Omaha," is popular for his cautious approach to investing, particularly in the market's hottest sectors such as fintech. The veteran investor had also downplayed emerging decentralized finance solutions like Bitcoin (BTC), ridiculing it as an asset that "does not create anything."

But Berkshire's new stake in Nubank shows that Buffett has been softening up to fintech lately. In detail, the firm had invested $500 million in the startup in July 2021. Its returns on the said investment amounted to $150 million in December 2021 after Nubank debuted on the New York Stock Exchange (NYSE).

So far, Buffett has not shown any intention to sell his position in Nubank.

Buffett's additional investment into Nubank shows his acknowledgment of the fintech sector's underlying theme the digitization of financial services, as well as his willingness to associate with companies that are involved in the cryptocurrency sector.

In detail, Easynvest, a trading platform that Nubank acquired in September 2020 has been actively offering a Bitcoin exchange-traded fund (ETF) since June 2021. Dubbed QBTC11, the ETF is backed by QR Asset Management and is listed on the B3 stock exchange, the second-oldest bourse in Brazil.

Thus, it appears that Nubank, which remains exposed to the emerging crypto sector via Easynvest, could use the additional revenue opportunities to benefit its top investor, Warren Buffett, despite his views that Bitcoin is a "rat poison squared."

Buffett's portfolio full of crypto-loving companies: While Buffett might not invest in Bitcoin directly, he is already gaining indirect exposure as companies in his portfolio foray into the crypto sector.

For instance, in October 2021, just a month before Bitcoin reached its all-time high of $69,000, fifth-largest U.S. bank U.S. Bancorp launched a cryptocurrency custody service for its institutional investment managers, noting that they witnessed an increase in demand from their "fund services clients" over the last few years.

Similarly, in another announcement made October 2021, Bank of America launched a cryptocurrency research initiative, citing "growing institutional interest."

Months before, BNY Mellon announced that it would hold, transfer and issue Bitcoin and similar cryptocurrencies for its asset-management clients.

"The Nubank investment can be tagged as Buffett's way of supporting the fintech/crypto world without taking back his criticisms of the past," asserted Greg Waisman, co-founder and chief operating officer of crypto wallet service Mercuryo, adding that the Berkshire boss is now backing the "digital currency ecosystem indirectly."

"Even an indirect exposure is bound to increase the positive sentiment that may push more investors into the space."

Source: Cointelegraph