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Airlines cancel hundreds of flights across the eastern Caribbean after U.S. raid on Venezuela

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The U.S. military operation that captured Venezuelan President Nicolás Maduro and flew him out of the country early Saturday has also disrupted Caribbean travel at a busy travel time for the region.

No airline flights were crossing over Venezuela on Saturday, according to FlightRadar24.com. And major airlines canceled hundreds of flights across the eastern Caribbean region and warned passengers that the disruptions could continue for days after the Federal Aviation Administration imposed restrictions.

Flights were canceled to and from Puerto Rico, the Virgin Islands, Aruba and more than a dozen other destinations in the Lesser Antilles island group that lies north of Venezuela. The airlines are waiving change fees for passengers who have to reschedule their flights this weekend.

At the Queen Beatrix airport in Aruba, a popular holiday destination for U.S. vacationers just 15 miles (24 kilometers) off Venezuela’s coast, officials said they expected operations to resume normally on Sunday after a day of canceled flights that stranded travelers or blocked them from flying to the island Saturday.

U.S. Transportation Secretary Sean Duffy said in a social media post that “the FAA restricted the airspace in the Caribbean and Venezuela to ensure the SAFETY of the flying public.”

“When appropriate, these airspace restrictions will be lifted,” he said on the social platform X. “Please work with your airlines directly if your flight has been impacted.”

Lou Levine, his wife and their three children were due to fly home to the Washington, D.C., area from Puerto Rico on Saturday morning. Instead he woke up to his wife saying their flight was canceled. He found out why when he checked his phone.

They first tried calling JetBlue to reschedule. The airline called back about two hours later, but the agent couldn’t help them. Levine and his wife saw others messaging JetBlue on social media and did the same. The airline responded and booked them on another flight leaving next Saturday, turning the Levines’ weeklong New Year’s holiday into a two-week sojourn.

Levine, a manager at a software company, said he’s fortunate to have a flexible and understanding employer. But his daughter will be missing a week of high school. And then there are the unexpected expenses.

“I love it here. But we have dog-sitting and cat-sitting and car rental. It’s fine. It’s just really painful on the wallet,” Levine said.

The Levines hope to book an earlier trip back if flights resume early.

This weekend was already past the peak 13-day holiday period when AAA projected 122.4 million Americans would travel at least 50 miles from home, but there were plenty of travelers still trying to squeeze in some more time on tropical beaches and resorts before heading back to colder temperatures.

“The Caribbean is a top destination this time of the year,” said AAA spokesperson Aixa Diaz. “We do have a lot of people who are trying to get back home this weekend ahead of work and school on Monday.”

Diaz said “it’s understandable we want to unplug” but travelers should keep track of what’s going on and allow airlines to send them phone alerts.

The FAA had earlier said it imposed a temporary airspace restriction on Puerto Rico’s international airport and surrounding regions.

An announcement by Luis Muñoz Marín International Airport in San Juan, Puerto Rico, that was posted on X said restrictions were put in place because of the “security situation related to military activity” in Venezuela.

As a result most commercial flights to and from the airport that are operated by U.S. airlines were suspended or canceled.

Foreign airlines and military aircraft were not included in that restriction, the statement said.

JetBlue said it canceled about 215 flights “due to airspace closures across the Caribbean related to military activity.” It also noted that flights farther west to the Dominican Republic and Jamaica were not affected by the government’s restrictions. Customers could rebook their travel or request a refund if the flights were canceled, the company said.

United Airlines said it was adjusting its schedule to account for airspace closures. It said customers could change their travel plans in the region for free as it continued to monitor the situation and worked with U.S. aviation authorities.

Southwest Airlines said it canceled all Aruba flights for Saturday and suspended Puerto Rico flights until further notice, but flights to the Dominican Republic were unaffected.

American Airlines said it was waiving change fees for flights to and from about 20 island destinations, including Anguilla, Antigua, Curacao, Saint Lucia and the U.S. and British Virgin Islands.

Delta Air Lines said it has issued a travel waiver for customers traveling to or from 13 impacted airports through Tuesday.

Dutch airline KLM said it canceled flights affecting thousands of passengers but planned to resume service Sunday to and from Curacao, Aruba, Bonaire and other islands.

The flight disruptions also affected some travelers booked for Caribbean cruises. Cruise operator Virgin Voyages said airline travelers unable to make it to San Juan in time for an upcoming cruise departure would be able to get a full credit for a future trip.

This story was originally featured on Fortune.com



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How a Harvard grad helped make Hyperliquid the biggest new player in crypto

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The alarm jolted Jeff Yan awake at around 5:00 a.m. It was a ringtone designed to—among other scenarios—blare out when something abnormal occurs on Hyperliquid, the decentralized crypto exchange he had cofounded. And on this morning in early October, things were very abnormal indeed. 

That day, crypto traders saw more than $19 billion in leveraged positions—or bets where investors wager more capital than they have on hand—evaporate after President Donald Trump threatened China with another round of tariffs, according to data from the crypto analytics site CoinGlass. “I’m just looking at it and praying that it’s good,” Yan said, referring to his exchange’s systems. Within one hour, using his “every brain cell” to analyze the data, he was confident that the platform had worked as intended—surviving a stress test where thousands of traders lost money and others who were shorting the market cashed in. 

In coming weeks, the crypto industry would come to refer to the wipe-out of Oct. 10 as a flash crash, one that was the largest liquidation event ever tracked by CoinGlass and an episode whose fallout still reverberates throughout the industry two months later. It was also one of the clearest signs yet that Hyperliquid had grown to become a crypto juggernaut.

According to CoinGlass, the platform liquidated more than $10 billion worth of positions that day, a figure that far outstripped the $4.6 billion and $2.4 billion liquidations that took place on longtime crypto exchanges Bybit and Binance, respectively. (The $10 billion figure refers to the total amount of the leveraged positions liquidated; the actual funds traders lost on their bets was lower).

Big exchanges like Binance and Coinbase have thousands of employees. By contrast, Hyperliquid Labs—the company that supports the associated crypto exchange and blockchain of the same name—had just 11. Yet, in just over two years, Hyperliquid is competing with the industry’s very biggest names, posting about $140 billion in derivatives volume in the past month, according to data from the analytics site DefiLlama. This has translated into more than $616 million in annualized revenue, while the cryptocurrency linked to its blockchain (known as HYPE) has grown to one of the largest in the industry with a market capitalization of almost $5.9 billion, according to data from the crypto analytics site DefiLlama.

But Yan wants Hyperliquid to become even bigger. “It’s something that no one else is really trying to build exactly at this point in time,” he said, “which is something that can really upgrade the financial system.”

Crypto whiz kids

The crypto world has long been defined by flamboyant and outspoken figures. Yan doesn’t fit that mold. Sporting black-rimmed glasses, trim black hair, and usually wearing crisp shorts, he said he is uneasy in the limelight. “This sort of celebrity is foreign to me,” he said, referring to how it felt to be mobbed at a recent crypto conference in South Korea. While willing to chat about his background, he stressed repeatedly that Hyperliquid is an ecosystem, not a one-man operation.

Despite his professed modesty, it’s clear Yan has been integral to the crypto protocol’s rise. Born in the Bay Area, he’s your prototypical whiz kid. In high school, he won gold and silver medals at the International Physics Olympiad and then attended Harvard University, where he studied mathematics and computer science. 

“He was always just very calm and very thoughtful,” said Vladimir Novakovski, a fellow Harvard graduate who interviewed Yan for an internship at Addepar, a wealth management software company. (Novakovski would later go on to create a competing exchange to Hyperliquid. Yan doesn’t recall interviewing with Novakovski, a Hyperliquid Labs spokesperson told Fortune.) 

Around the time Yan graduated from Harvard, the notorious crypto conman Sam Bankman-Fried was making a name for himself. Bankman-Fried had spun up his own crypto trading firm Alameda Research and was simultaneously growing FTX, his own crypto exchange that specialized in perpetuals, or derivatives that let traders bet on the future price of assets without holding the assets themselves. These contracts allow for leverage, which lets traders magnify gains and losses.

Even as Bankman-Fried was captivating the crypto industry with spiels about his alleged genius, Yan and his team stayed away, preferring to trade on platforms like Coinbase. “Alameda and FTX, their relationship was not clear to me,” he said. “And it felt like it wasn’t worth the risk of exposing any part of our funds or strategies to that kind of unclear relationship.”

FTX aftermath

FTX was a black box. Bankman-Fried plowed billions of dollars in customer funds into ostentatious real estate purchases, risky venture investments, and political lobbying campaigns. Only after FTX declared bankruptcy did customers see how much of their capital Bankman-Fried had gambled away. 

Yan wanted to create a more transparent trading platform for crypto perpetuals, or “perps.” He and his team had thought about building their own decentralized exchange prior to the collapse of FTX, but the “FTX thing solidified my conviction that it was the right time to build this thing,” he said. 

He was far from the first founder to dream up a decentralized crypto trading platform. There are a handful of of others, like dYdX, that offer crypto derivatives to risk-hungry traders who don’t want to venture onto centralized exchanges like Coinbase. But these decentralized platforms were often clunky, hard to use, and slow. “Centralized exchanges had a really great UX [user experience], and almost all the volume was happening on centralized exchanges, but no one in DeFi was, I think, really trying to match that,” said Yan, referring to the term decentralized finance.

Yan, though, was a trader, and he and his team decided to build a platform they would want to use. “I think it is good when the people building the product are very familiar with who the customer is,” said Novakovski, the crypto founder who interviewed Yan for an internship.

Unlike Bankman-Fried, Yan cut an image that was more polished, professional, and sincere, according to a longtime crypto executive who’s met both founders. “Jeff has cut his hair. SBF did not,” they said, asking for anonymity to speak more candidly. “SBF’s shorts were too long and didn’t fit. Jeff’s look crisp and together.” 

And, as opposed to Bankman-Fried and countless other crypto founders, Yan and his team decided to eschew raising money from venture capitalists. They were already making a sizable amount from their crypto trading operation, and Yan decided to front the cost himself. “If we’re going to build something that’s really going to be a credibly neutral platform on which everyone else can build, then a really important principle is to sort of not have insiders,” he said.

In 2023, Yan and his team launched Hyperliquid and the blockchain on which the decentralized exchange is built. For months, volume grew steadily, but interest in the exchange exploded in early 2025, according to data from DefiLlama.

Hyperliquid is optimized for speed. For many traders, seconds mean the difference between profit or loss. “I’m the one user who keeps bugging the team to add more features, and they keep rejecting every feature that I ask for because they want to keep it extremely fast and extremely nimble,” said Thanos Alpha, a pseudonymous Hyperliquid user who said he’s a power user on the platform.

This speed, combined with engineering solutions that allowed Hyperliquid to accommodate larger trades than competitors, set it up for success, added the pseudonymous trader, who said he’s an avid DeFi user but declined to give his real name—a common request from crypto diehards.

Now, the ecosystem is attracting interest beyond anonymous crypto traders. Large venture capital firms like Paradigm and Andreessen Horowitz have taken positions in Hyperliquid’s HYPE cryptocurrency, reported The Information. And even Wall Street and large companies are taking notice. The fintech giant PayPal posted about Hyperliquid on social media as a crop of companies vied to launch a Hyperliquid-branded stablecoin on the blockchain. And David Schamis, founding partner at the private equity firm Atlas Merchant Capital, is steering a public company that is stockpiling HYPE. “It’s not only about trading crypto,” Schamis said, referring to blockchain technology. 

AWS of finance

Yan, himself, views Hyperliquid as the Amazon Web Services of financial infrastructure, referring to the cloud computing giant that powers much of the internet. Developers are independently deploying different assets other than cryptocurrencies to trade on the blockchain, including listings tied to the prices of stocks of major corporations like NVIDIA and Google. And some validators, or the people who own the servers that actually process the transactions, earn revenue through supporting the ecosystem.

Still, there’s no guarantee that Hyperliquid will continue to expand, especially as competitors look to challenge Hyperliquid’s newfound dominance. That includes Novakovski, who has since launched Lighter, his own competing crypto derivatives platform backed by Founders Fund, Ribbit Capital, and David Sacks’ Craft Ventures. And then there’s Aster, a Hyperliquid copycat that’s closely aligned with the crypto exchange Binance. 

Moreover, Hyperliquid—like many crypto projects in the world of DeFi—operates in ambiguous legal territory. Its users are all anonymous, and no one has to submit documentation to verify their identity, as opposed to traders who access more traditional financial products like Robinhood. In fact, users linked to North Korea, which has an infamous crypto hacking operation, have traded on Hyperliquid, alleges Taylor Monahan, lead security researcher at the crypto wallet MetaMask. DeFi protocols are part of North Korea’s money laundering operation, according to the crypto analytics firm Chainalysis.

A spokesperson for Hyperliquid Labs said that the website for Hyperliquid screens traders for risky behavior and enforces sanctions compliance, adding that ”any confirmed high risk activity on the application is immediately flagged and the addresses blocked.”

And, if Hyperliquid continues to grow, the ecosystem may attract more regulatory scrutiny. “It’s a big question about how long they [Hyperliquid] will be allowed to operate in this non-KYC way,” said a crypto market maker, referring to know-your-customer laws, which require financial institutions to collect user identification. The market maker asked for anonymity to talk more candidly. 

“The bigger they are, the bigger the question usually becomes,” added the market maker.

“We are proactively engaging with regulators and policy stakeholders to support greater clarity for decentralized finance,” a Hyperliquid spokesperson said in response.

As Hyperliquid wrestles with the evolving competitive landscape, regulatory environment, and making good on Yan’s ambitions to reinvent the foundations of finance, the DeFi founder will likely continue to build out his team. That’s why he announced in late October he was hiring to expand the staff at Hyperliquid Labs by almost 30%—from 11 to 14 employees.



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DeFi has earned a seat at the grown-ups table—now comes the hard part

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One of the many remarkable features of crypto is how often upstarts appear out of nowhere and, in a year or less, become one of the industry’s top dogs. This happened in 2016 when Binance exploded on the scene, and in 2023 when Blur gobbled up the NFT market (RIP) from OpenSea. Now, the same thing is happening in DeFi where Hyperliquid—and its 11 or so employees—is doing more than $100 billion in trading volume while going toe-to-toe with long-established giants like Binance and Bybit.

It was only after reading this smart Hyperliquid profile, by Fortune Crypto’s Ben Weiss and Leo Schwartz, that I came to appreciate what a big deal the platform has become. This is in part thanks to its no-nonsense cofounder Jeff Yan, whose credentials include a Harvard degree and a gold in the International Physics Olympiad. But it is also due to Hyperliquid’s being a decentralized platform that is winning market share from centralized exchanges.

The market Hyperliquid is winning is admittedly an esoteric one, consisting of pro traders who leverage up to sling a popular derivative called “perps” (for perpetual futures). Most of us, including those well versed in crypto, will get rekt going anywhere near these things. But, though they are not mainstream, the sheer volume of money involved in perps trading means that sites that offer it can make out very well indeed. In Hyperliquid’s case, it is pulling in roughly $600 million of annual revenue, and its token is worth more than Uniswap’s cryptocurrency.

On top of this, Hyperliquid mostly walks the walk when it comes to decentralization. While some complain the project has too few validators—which can give rise to centralized control—it does have some decidedly DeFi elements like non-custodial wallets and an on-chain order book. Hyperliquid also lacks Know-Your-Customer policies.

This last part is reassuring for old-school Bitcoiners and crypto purists, who are wary of governments meddling in people’s personal finances. But the lack of KYC could also put CEO Yan in an uncomfortable position—especially given his influence over Hyperliquid’s validator network and the code that governs its smart contracts.

This tension between decentralized ideals and the influence of founders is playing out in other corners of DeFi, including with Aave and Ethereum. Bloomberg’s Muyao Shen recently picked up on these tensions:

“[DeFi projects] have been hailed by backers as democratized corporations, while critics suggest the real purpose is to make them difficult to regulate. The downside to decentralization in regards to actual control is apparent when legal disputes arise,” she wrote.

In coming years, Hyperliquid and other big DeFi players are going to be increasingly entwined with the world of mainstream finance. This means that legal disputes over issues like KYC and tokenholders’ right to profits are likely to become more common. Meanwhile, DeFi projects could find it harder to carry out big governance and policy decisions deep within obscure foundations or DAOs—which is how many of them prefer to operate.

While the DeFi sector is likely to encounter legal bumps in the coming years, that’s not a bad thing if it results in more transparency. At the same time, the rapid ascension of Hyperliquid is just the latest example that DeFi is here, and that the sector is only going to grow bigger and more influential.

Jeff John Roberts
jeff.roberts@fortune.com
@jeffjohnroberts

DECENTRALIZED NEWS

Lloyds used tokenized deposits to buy gilts, or British government bonds, last month, and other UK banks say they are exploring the use of blockchain for other transactions like mortgages—but the institutional adoption of crypto in Britain feels well behind that of the U.S. (FT)

World Liberty Financial has asked the OCC to grant it a national trust charter to issue the Trump-backed USD1 stablecoin. If it is approved, WLF would operate as a “skinny” bank with access to master accounts at the Fed. (WSJ)

Crypto infrastructure firm Fireblocks bought accounting platform TRES Finance for $130 million, a move it says will better allow traditional firms to integrate crypto. (Fortune)

The Tether-backed social media site Rumble launched a decentralized wallet that lets users tip content creators with Bitcoin or USDT, with MoonPay handling the payments. (CoinDesk)

The overall volume of blockchain-based criminal activity didn’t change much in 2025, says Chainalysis. The difference is that Russia, Iran and other nation states now account for much of the crime. (Fortune)

MAIN CHARACTER OF THE WEEK

Jerome Powell, chair of the U.S. Federal Reserve.

Al Drago—Bloomberg/Getty Images

Fed Chair Jerome Powell issued a statement with implications not just for crypto, but for global finance. He said a new DOJ criminal investigation came in retaliation for the Fed’s interest rate decisions, and reflects a move by the White House to intimidate the central bank.

MEME O’ THE MOMENT

NFT hopefuls still hope for a revival.

@tapevol_off

Nike quietly off-loaded its NFT shop RTFKT, which it acquired in 2021. The move is the latest signal that both blockchain and retail firms have moved on from crypto collectibles, but there still remain some believers.  



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Molson Coors CEO: We’re doing our part to solve society’s ‘occasion problem’ – and we’re getting some unexpected help

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