The Intern Who Rose Too Fast: How Paul Gurinas's Jump Crypto Gambled on Terra and Lost Its Reputation

When Kanav Kariya announced his departure from Jump Trading in June 2023, the crypto industry took note. The 28-year-old who had rocketed from intern to president of Jump Crypto in just four years didn’t offer much explanation. What the public didn’t know was that Kariya’s sudden resignation was the final chapter in a much larger story—one that would reshape how people understood the risks of letting traditional high-frequency trading firms into an unregulated crypto market. At the center of this story stood Paul Gurinas and Bill DiSomma, the Chicago founders of Jump, whose ambitions to dominate crypto ultimately exposed a dangerous blind spot in the industry’s regulatory framework.

The Gamble That Changed Everything: Jump’s Secret Terra Bailout

The story began in May 2021, during a Zoom meeting that would define the trajectory of both Jump Crypto and the man leading it. Terra’s algorithmic stablecoin, UST, was supposed to maintain its $1 peg through a complex mechanism tied to its native token LUNA. But the system was breaking down. Jump, which had positioned itself as the market maker for Terra—essentially an invisible hand keeping the token artificially afloat—faced a choice: let Terraform Labs and its founder Do Kwon collapse, or intervene dramatically.

Bill DiSomma, Jump’s co-founder, joined the call to explore options. According to court documents later filed by the SEC, the solution came from an unlikely voice: the 25-year-old Kariya, an intern who had only recently transitioned from his college days to full-time work at Jump. Kariya’s proposal was aggressive. Jump would secretly purchase massive quantities of UST to manufacture artificial demand, while Terraform would grant Jump options to buy up to 65 million LUNA tokens at just $0.40 each—a price that seemed absurdly low when LUNA was trading above $90.

The result? Jump generated approximately $1 billion in profit from that single transaction. But the real winner wasn’t obvious to the public. The salvage operation made UST’s price stabilize temporarily, allowing Do Kwon to publicly declare the crisis over. Behind the scenes, a Terraform employee’s private text message revealed the truth: “Without Jump’s intervention, we really might be finished.”

What nobody anticipated was that this intervention only delayed the inevitable. A year later, UST would undergo a death spiral, evaporating $40 billion in value in just days. The collapse sent shockwaves through the entire crypto ecosystem and indirectly contributed to the downfall of FTX later that year. Countless retail investors lost their life savings, and the incident triggered an unprecedented wave of regulatory scrutiny across the industry.

The Men Behind the Curtain: Paul Gurinas, Bill DiSomma, and Jump’s DNA

To understand how Jump found itself in such a precarious position, you have to understand the firm itself. Paul Gurinas and Bill DiSomma founded Jump Trading in 2001, building on a legacy that stretched back to the electronic trading revolution of the late 1990s. Both men had cut their teeth at the Chicago Mercantile Exchange, where traders once literally jumped and shouted to execute bids—the very image that inspired Jump’s name.

What made Jump different from other trading firms was its obsessive secrecy. The company guarded its algorithmic trading strategies like state secrets. Visitors to Jump’s Montgomery Ward Building headquarters had to sign nondisclosure agreements just to enter the building, even for casual inquiries. According to John Lothian, a veteran of Chicago’s financial community, Jump would flatly deny entry to anyone who didn’t pass muster. “They just wouldn’t let people in because it didn’t fit their confidentiality policy,” Lothian recalled.

This culture of secrecy extended to how Paul Gurinas and the company approached cryptocurrency. Rather than diving headfirst into the space, Jump treated crypto almost like an experimental sandbox. Interns would work on crypto projects in relative isolation from the firm’s core high-frequency trading business. The logic was clever: if the experiment failed, it wouldn’t jeopardize billions of dollars in existing capital. If it succeeded, Jump would own a new frontier.

Crypto as a Toy for Traders to Learn On

By 2015, Jump had established an R&D office at the University of Illinois—the alma mater of both Paul Gurinas and Bill DiSomma. The firm recruited promising students, often through word-of-mouth referrals rather than formal recruitment channels. This was how Kanav Kariya, a computer science student from Mumbai who had dreamed of studying in America since visiting Disneyland at age 13, found his way to Jump.

When Kariya joined Jump as an intern in January 2017, the firm assigned him to build the early infrastructure for cryptocurrency trading with minimal oversight. In a 2023 podcast interview, Kariya described the experience as working “in a completely closed bubble” with freedom to experiment. He meant it as a compliment, but it was inadvertently revealing. Jump viewed cryptocurrency the way a chess master views practice games with a novice—useful for developing technique, but not the main event.

That perspective began to shift in 2017, when Bitcoin experienced its first major bull run, surging from below $1,000 to nearly $20,000 by December. Jump’s crypto team gradually became one of the firm’s best-performing units. When the Bitcoin bubble burst in 2018, the team didn’t disband. Instead, Kariya graduated and joined Jump full-time. His ascent had begun.

Market Making Without the Rules: The Crypto Version of Conflict of Interest

To understand why Jump’s actions with Terra were so controversial, you have to understand what market making means in cryptocurrency—and how radically different it is from market making in traditional finance.

In regulated markets, market makers act as neutral intermediaries. They profit from tiny spreads on each transaction, executing millions of trades with razor-thin margins. Critically, they work with exchanges under regulatory oversight, not directly with the companies issuing securities. Venture capital divisions are kept physically separate from trading operations to prevent insider trading and market manipulation.

The cryptocurrency market follows almost none of these rules. According to Michael Selig, an attorney at Willkie Farr & Gallagher who specializes in digital assets, crypto market makers operate in a completely different universe. They don’t just work with exchanges—they sign direct agreements with cryptocurrency projects, often negotiating to help list tokens on exchanges and then creating liquidity to attract traders and capital.

Here’s where it gets troubling: the project party typically lends the market maker vast quantities of tokens to trade. More dangerously, market makers like Jump often negotiate for options—the right to purchase large token supplies at massive discounts if the project succeeds. While this structure makes some sense (projects need liquidity), it creates a conflict of interest that would be completely illegal in traditional finance.

As one anonymous founder of a cryptocurrency exchange told Fortune: “If you work at Jump, you can decide which token will succeed.” Another exchange founder who attempted to negotiate with Jump reported that Jump often demanded five percentage points or more of total token supply—far more aggressive than other market makers. “It gives them a lot of ammunition to sabotage,” the founder said.

The Elevation of Kanav Kariya: Making a Trading Firm a Public Company

By 2021, Jump Crypto had grown into something far more sophisticated than an intern experiment. Paul Gurinas and Bill DiSomma made the decision to establish it as an independent division with Kanav Kariya as its president. In September of that year, just two months before Bitcoin reached $69,000, Jump Crypto officially launched.

The timing was significant because Jump’s leaders—particularly Paul Gurinas and DiSomma, who were well-established Chicago fixtures—recognized something important: in the crypto world, the young and eccentric held outsized cultural influence. The industry rewarded personalities and thought leadership in ways traditional finance didn’t. So Jump hired Nathan Roth, a marketing veteran from the dating app Hinge, to elevate Kariya’s public profile. The strategy was explicit: make Kariya into a “blockchain philosopher” figure like Andreessen Horowitz’s Chris Dixon.

Kariya fit the part well. He appeared tired but thoughtful in interviews, spoke with a slight Mumbai accent, and projected humble intelligence rather than arrogance. When asked about market direction, he’d modestly deflect: “Don’t ask me what the price of anything is going to be in the next 10 seconds.” It was perfect positioning for a market maker who profited regardless of whether tokens went up or down—as long as there was liquidity.

Behind closed doors, according to whistleblower James Hunsaker, the power structure looked different. Bill DiSomma still held most of the decision-making authority. Kariya was “largely the public face of Jump Crypto,” Hunsaker explained to the SEC. Paul Gurinas’s influence remained more subtle, but equally real, as the co-founder who had architected the whole strategy.

The Relationship That Became a Legal Problem

Kariya’s relationship with Do Kwon, Terraform Labs’ charismatic founder, was particularly illuminating. The two, nearly the same age, communicated regularly on Signal, the privacy-focused messaging app. Their conversations ranged from business discussions to personal banter. In February 2021, Kariya joked about getting a dog named Terra. Kwon replied, “Call him Luna. That way he matches my dog.” Later, Kwon texted: “Hope you get some benefit from it… it’s funnier than just making Bill DiSomma rich haha.”

This casual tone masked a far more consequential arrangement. According to SEC documents, Jump wasn’t a neutral market maker for Terra—it was directly tied to Terraform’s success through its options holdings. Jump could even participate in Terraform’s internal operations, which was exactly the kind of conflict of interest that decades of financial regulation was designed to prevent.

The full scope of this relationship didn’t become public until 2023, when whistleblower James Hunsaker—a Jump employee who had been in that fateful May 2021 Zoom meeting and had lost about $200,000 in the Terra collapse—came forward. Hunsaker first tried anonymously leaking information through Reddit, but when that failed to gain traction, he contacted the SEC. His testimony proved devastating to Jump’s reputation and to Kariya’s standing.

The Unraveling: When Regulatory Interest Arrives

The turning point came when the SEC filed a lawsuit against Terraform Labs in early 2023, months after Terra’s final collapse. In court documents, the SEC detailed Jump’s role in the 2021 bailout attempt—not as a savior, but as a key participant in what looked like market manipulation. The agency revealed that Jump had generated over $1 billion from an arrangement that should never have existed under traditional finance rules.

Meanwhile, other problems mounted for Jump. The Wormhole cross-chain bridge, which Jump had incubated, suffered a $325 million hack in February 2022 (the funds were eventually recovered in 2023). Jump had also lost substantial capital in Terra’s final collapse—estimates suggested over $1 billion, though the company never confirmed the figure. After FTX’s implosion, reports indicated Jump had nearly $300 million trapped on the exchange.

By early 2024, the CFTC had launched its own investigation into Jump’s cryptocurrency activities. The Justice Department mentioned Jump’s Terra dealings in its lawsuit against Do Kwon. Neither investigation had led to criminal charges against Jump as a firm, but the regulatory spotlight was intense.

When Kariya was subpoenaed to appear before the SEC in May 2023 regarding the 2021 incident, colleagues noticed a dramatic change in his appearance. The once-energetic crypto executive looked aged and exhausted. Both Kariya and Bill DiSomma exercised their Fifth Amendment rights when questioned—a legal move that prevents self-incrimination but often carries reputational damage.

The Moment to Exit: What Happened to Jump’s Crypto Ambitions

By mid-2024, Jump had quietly begun retreating from the aggressive cryptocurrency trading that had made it billions. When Bitcoin’s spot ETF officially launched in January 2024, competitors like Jane Street rushed in as market makers. Jump, despite having pioneered market making in crypto, sat the deal out. When Wormhole launched as an independent protocol in April 2024 with over $1 billion in trading volume, it didn’t hire Jump—its former parent company and original incubator—to serve as its market maker.

The signal was clear: Jump’s reputation in crypto had been tarnished. The once-dominant player in an unregulated frontier found itself on the outside looking in. Paul Gurinas, Bill DiSomma, and the firm they built had discovered that dominance in traditional finance didn’t automatically translate to dominance in an industry where reputation and relationships were currency.

On June 24, 2023, just days after the CFTC investigation into Jump became public, Kariya announced his departure. In a post on X (formerly Twitter), the 28-year-old who had risen from intern to president wrote: “Today marks the end of a personal journey. It’s my last day at Jump.” While Kariya claimed he would continue to “participate” in Jump’s portfolio companies, sources close to him suggested the departure had been planned for months. His future in crypto looked uncertain.

The Lessons That Few Want to Learn

Many observers drew parallels between Kariya and other crypto figures caught in scandals—Do Kwon and SBF among them. But the comparison missed something important. While Kwon had founded Terra and SBF had founded FTX, Kariya had simply risen through the ranks of an existing firm. Founders, competitors, and investors who knew him described Kariya as intelligent, humble, and genuinely confused by the chaos surrounding him. “I don’t think anyone thinks he is a cunning person,” one observer said. “I think he is a scapegoat.”

The real lesson of Jump’s rise and fall wasn’t about Kariya—it was about the dangers of allowing sophisticated traditional finance firms to operate in unregulated crypto markets. Paul Gurinas and Bill DiSomma had built a firm that excelled at exploiting information asymmetries and market inefficiencies in regulated environments. When they applied those same techniques to cryptocurrency, where regulatory guardrails didn’t exist, the results were predictable: conflicts of interest, market manipulation, and ultimately, regulatory reckoning.

Jump had tried to be everything: a high-frequency trading firm, a development studio, a venture capital firm, a market maker, and a project partner. But as one of Jump’s competitors observed, “They were still too much like a trading firm. Their teeth were too sharp.” The firm had made assumptions about crypto that turned out to be wrong—that reputation didn’t matter, that conflicts of interest were acceptable, that an unregulated market was a field for conquest rather than collaboration.

Despite all these losses, Jump likely emerged from its cryptocurrency adventures with a profit overall. But it was still a profound failure. For high-frequency trading firms like Jump, success depends on constantly moving to the next opportunity, staying ahead of regulatory changes, and maintaining the trust of partners and regulators. Jump had missed most of those marks. It had become infamous rather than influential.

Interestingly, the whistleblower at the center of Jump’s reckoning went in a different direction. James Hunsaker left Jump in February 2022 and founded his own cryptocurrency project, Monad, with a former colleague. In April 2024, Monad completed a $225 million funding round at a $3 billion valuation. Jump did not participate.