Bitcoin Briefly Crossed US$50K. Regulators Are Circling.

Bitcoin’s climb above US$50,000 for the first time on Tuesday marks a psychological milestone for investors—but it could trigger extra regulatory scrutiny.

The move higher means the cryptocurrency has more than doubled in value in just two months after several splashy news announcements. The gains come after a 303% increase in Bitcoin’s price last year.

In recent trading, Bitcoin was selling for $48.726. Bitcoin was up more than 4% earlier on Tuesday but has retreated back. Its price is up nearly 70% so far this year.

This month, Elon Musk’s Tesla (ticker: TSLA) said it bought $1.5 billion of Bitcoin and will start accepting it as payment for its electric vehicles at some point soon. BNY Mellon said it would hold, transfer, and issue Bitcoin for clients, and Mastercard (MA) said it would integrate Bitcoin into its payments network this year.

A possible catalyst for Tuesday’s move higher: MicroStrategy (MSTR), a business-intelligence company that has become a Bitcoin investing platform, said it would sell $600 million of convertible notes to buy the crypto. It sold $650 million of notes in December to do the same thing.

Shares of MicroStrategy fell 3.7% on Tuesday but are up 570% over the past year, compared with the S&P 500’s 16.7% one-year gain.

Bitcoin was once dismissed as a quirky sideshow in finance, with a shadowy history and cultlike following. Its increasingly mainstream appeal puts a spotlight on regulation as banks and professional traders take it seriously.

Earlier this month, newly confirmed Treasury Secretary Janet Yellen told an industry innovation policy roundtable that she sees “the promise” of these new currencies. “But I also see the reality: Cryptocurrencies have been used to launder the profits of online drug traffickers; they’ve been a tool to finance terrorism.”

President Joe Biden’s nominee to head the Securities and Exchange Commission, Gary Gensler, is also well-versed in crypto, having spent the past few years teaching about digital currency and the blockchain technology that underlies it at the Massachusetts Institute of Technology.

“Bitcoin and other cryptocurrencies will come under the spotlight from watchdogs like never before and this can be expected to create volatility in the market,” said Nigel Green, the founder and CEO of U.K.-based deVere Group, a financial advisory firm.

DeVere sold half its Bitcoin holdings in December, when the price had surged to $25,000.

Green said in a December blog post about the sale that it was to take profit after last year’s run-up. “It was not due to a lack of belief in Bitcoin, or the concept of digital currencies,” the post said.

Wedbush analyst Daniel Ives said Tesla’s embrace of Bitcoin could be a “game-changer” for the crypto. “We believe the trend of transactions, Bitcoin investments, and blockchain-driven initiatives could surge over the coming years,” he said. “This Bitcoin mania is not a fad, in our opinion, but rather the start of a new age on the digital currency front.”

More financial and payment companies are pushing Bitcoin into the mainstream. Robinhood, Square (SQ), and PayPal Holdings (PYPL) allow Bitcoin trading. Fidelity Investments has a business to store and trade crypto.

And more are considering jumping in. In January, asset management giant BlackRock (BLK) gave two of its funds the go-ahead to invest in crypto.

A unit of Morgan Stanley’s (MS) asset-management business is reportedly examining adding it as an option for investors. JPMorgan Chase (JPM) Co-President Dan Pinto said last week client demand isn’t there yet, but it will get there.

“If over time an asset class develops that is going to be used by different asset managers and investors, we will have to be involved,” Pinto said on CNBC.

The boom in casual footware ushered in by the pandemic has ended, a potential problem for companies such as Adidas that benefited from the shift to less formal clothing, Bank of America says.

The casual footwear business has been on the ropes since mid-2023 as people began returning to office.

Analyst Thierry Cota wrote that while most downcycles have lasted one to two years over the past two decades or so, the current one is different.

It “shows no sign of abating” and there is “no turning point in sight,” he said.

Adidas and Nike alone account for almost 60% of revenue in the casual footwear industry, Cota estimated, so the sector’s slower growth could be especially painful for them as opposed to brands that have a stronger performance-shoe segment. Adidas may just have it worse than Nike.

Cota downgraded Adidas stock to Underperform from Buy on Tuesday and slashed his target for the stock price to €160 (about $187) from €213. He doesn’t have a rating for Nike stock.

Shares of Adidas listed on the German stock exchange fell 4.5% Tuesday to €162.25. Nike stock was down 1.2%.

Adidas didn’t immediately respond to a request for comment.

Cota sees trouble for Adidas both in the short and long term.

Adidas’ lifestyle segment, which includes the Gazelles and Sambas brands, has been one of the company’s fastest-growing business, but there are signs growth is waning.

Lifestyle sales increased at a 10% annual pace in Adidas’ third quarter, down from 13% in the second quarter.

The analyst now predicts Adidas’ organic sales will grow by a 5% annual rate starting in 2027, down from his prior forecast of 7.5%.

The slower revenue growth will likewise weigh on profitability, Cota said, predicting that margins on earnings before interest and taxes will decline back toward the company’s long-term average after several quarters of outperforming. That could result in a cut to earnings per share.

Adidas stock had a rough 2025. Shares shed 33% in the past 12 months, weighed down by investor concerns over how tariffs, slowing demand, and increased competition would affect revenue growth.

Nike stock fell 9% throughout the period, reflecting both the company’s struggles with demand and optimism over a turnaround plan CEO Elliott Hill rolled out in late 2024.

Investors’ confidence has faded following Nike’s December earnings report, which suggested that a sustained recovery is still several quarters away. Just how many remains anyone’s guess.

But if Adidas’ challenges continue, as Cota believes they will, it could open up some space for Nike to claw back any market share it lost to its rival.

Investors should keep in mind, however, that the field has grown increasingly crowded in the past five years. Upstarts such as On Holding and Hoka also present a formidable challenge to the sector’s legacy brands.

Shares of On and Deckers Outdoor , Hoka’s parent company, fell 11% and 48%, respectively, in 2025, but analysts are upbeat about both companies’ fundamentals as the new year begins.

The battle of the sneakers is just getting started.

Bitcoin Briefly Crossed US$50K. Regulators Are Circling.

The pandemic-fuelled love affair with casual footwear is fading, with Bank of America warning the downturn shows no sign of easing.