What Is Kalshi?

Where Kalshi came from

Kalshi was founded in 2018 by Tarek Mansour and Luana Lopes Lara, who met as students at MIT. Mansour had interned at Goldman Sachs and traded at Citadel; Lopes Lara, a former competitive ballerina from Brazil, studied computer science and math. The origin story they tell is mundane in the best way: they wanted a clean, legal way to take a position on a real-world event — to hedge a view the way a trader hedges a portfolio — and found that no regulated venue in the U.S. would let them.

So the bet they made was not on any single market. It was on the regulatory path itself. Rather than launch fast and ask forgiveness, they spent their first two years in the slow, expensive process of getting the CFTC to bless an entirely new kind of exchange — an unusual choice for a venture-backed startup, and one that turned out to be the company's deepest moat. Mansour serves as CEO and Lopes Lara as COO.

The bet wasn't on any single market — it was on the regulatory path itself. Spending two years getting the CFTC to bless a new kind of exchange turned out to be the company's deepest moat.

The payoff came in November 2020, when the CFTC issued an Order of Designation making KalshiEX LLC a Designated Contract Market (DCM) — the same category of federally regulated exchange as the futures venues that trade oil and interest rates. Public trading opened in July 2021, starting with macroeconomic and policy questions: inflation prints, Fed decisions, legislative outcomes. A DCM designation is not a rubber stamp — it obligates Kalshi to the core principles that govern derivatives markets: financial safeguarding of customer funds, market surveillance, trade reporting, a published rulebook, and controls against manipulation.

The legal fights: elections, then sports

Kalshi's defining early legal battle was over politics. It wanted to list contracts on which party would control Congress; in 2023 the CFTC moved to block them, arguing the contracts amounted to unlawful gaming. Kalshi sued. On September 6, 2024, a federal district court ruled for Kalshi, finding the CFTC had exceeded its authority under the Commodity Exchange Act. The CFTC sought a stay pending appeal; the D.C. Circuit declined it in October 2024, and Kalshi's election markets went live ahead of that year's election. In May 2025 the CFTC voluntarily dropped its appeal, leaving the pro-Kalshi ruling standing — the legal footing for Kalshi's next, much larger expansion.

In early 2025, Kalshi launched sports event contracts, and the effect on the business was immediate — sports is a vastly larger pool of activity than economic forecasting, and trading flooded in. It also opened a second legal front, this time against the states. A number of state gaming regulators have argued that sports event contracts are sports betting subject to their laws, not federal swaps, and sent cease-and-desist letters; the courts have not spoken with one voice. The Third Circuit sided with Kalshi in a New Jersey case in April 2026 — the first federal appeals court to hold the CFTC's jurisdiction over sports-related event contracts is likely exclusive — but a New York federal court ruled the other way in July 2026, and a consolidated Tennessee/Ohio case was argued before the Sixth Circuit that same month. State attorneys general expect the question could reach the Supreme Court as early as 2027. For the current picture, see the live litigation tracker and our prediction-market legality overview.

What Kalshi lists

Kalshi lists one of the widest ranges of "serious" American event contracts of any platform. Beyond sports, its catalog spans economics (CPI, jobs reports, Fed moves), politics and elections, climate and weather, crypto price levels, company and tech milestones, and a long tail of cultural and entertainment markets. That breadth — particularly the economic and policy markets — is much of why Kalshi appeals to institutional desks looking to hedge or express macro views, not just to retail forecasters.

Mechanically, every market is built from the same binary contract. Multi-answer questions — a tournament field, an election, the next central-bank decision — are assembled from groups of mutually exclusive contracts whose prices read together as a probability distribution. The two numbers worth watching on any Kalshi market are its trading volume (how much changed hands) and its open interest (how many contracts are live and unsettled) — the same volume-and-activity lens an analyst would bring to any exchange.

Scale and market position

Kalshi is the clear volume leader in U.S. prediction markets. A Congressional Research Service report put trailing-year volume at roughly $39.7 billion as of February 2026, about 87% of it sports. By Kalshi's own account in its May 2026 funding announcement, annualized volume had since climbed to roughly $178 billion, with the company claiming the large majority of U.S. prediction-market activity. Treat the headline figures as directional and time-stamped — the precise numbers move week to week, and the platform's own claims run ahead of the independently reported ones.

The composition matters as much as the total. A platform that is overwhelmingly sports-driven behaves differently — in liquidity, in seasonality, in what its prices mean — than the diversified, politically weighted profile of a rival like Polymarket. For how the two compare across regulation, structure, and data, see Kalshi vs. Polymarket.

Investors, leadership, and distribution

Kalshi's fundraising has tracked its volume curve closely. In May 2026 it announced a $1 billion Series F at a $22 billion valuation, led by Coatue Management with participation from Sequoia Capital, Andreessen Horowitz, IVP, Paradigm, Morgan Stanley, and ARK Invest — roughly doubling its valuation in about five months from the prior Series E near $11 billion. (Full round-by-round detail is in the funding history above.) The investor list is itself a signal: a mix of top-tier venture firms and Wall Street institutions treating the category as financial infrastructure rather than a novelty.

Leadership has remained the two founders throughout — Mansour as CEO, Lopes Lara as COO — a continuity that's rare for a company scaling this fast under this much legal and regulatory pressure. Kalshi's reach also extends well beyond its own app through distribution deals, most consequentially with Robinhood, which surfaces Kalshi contracts inside its brokerage app — a reminder that much of the activity on the exchange arrives through partners, not the front door.

What sets Kalshi apart

Strip away the headlines and three things set Kalshi apart. It is regulated-first: it chose to become a CFTC-overseen exchange before it built a mass-market product, and that choice remains its durable advantage. It is dollar-settled: you deposit and are paid in USD, with no crypto wallet or stablecoin in the loop. And it is exchange-grade: an order book, surveillance, a published rulebook, and a clean public data feed, rather than a casino-style book. Those qualities are why its prices are taken seriously as forecasts — and why so much of the institutional money entering this space is entering through Kalshi.

• Kalshi is the volume leader among centralized, CFTC-regulated exchanges, driven heavily by sports, and faces retail traders directly.
• Polymarket is a large on-chain market settled in the USDC stablecoin, known for deep political and breaking-news books, with a separately regulated U.S. arm in Polymarket US.
• Rothera shares Kalshi's regulatory shape — a CFTC exchange settling in dollars — but inverts the business model: it doesn't face the public at all, instead serving as wholesale infrastructure that brokers like Robinhood route into.

For the two best-known venues head to head, see Kalshi vs. Polymarket; for the regulatory backdrop across the industry, see prediction-market legality by state.

Company & funding

Privately held and founder-controlled by Tarek Mansour and Luana Lopes Lara; backed by venture investors including Sequoia Capital, Andreessen Horowitz, and Paradigm.

• Employees: ~200 employees
• First CFTC-designated Designated Contract Market (DCM) for event contracts (November 2020).
• ~$178B in annualized trading volume and more than $1.5B in annualized revenue, as of May 2026 (Bloomberg; company-disclosed).

Funding

Total raised ~$2.8BNeeds verificationCrunchbase aggregates 12 rounds across 36 investors; the seven itemized rounds above sum to roughly $2.615B. Baillie Gifford joined a Series F extension on May 21, 2026.

Timeline

Regulatory status

Kalshi operates as a CFTC-regulated Designated Contract Market (DCM) — a federally overseen derivatives exchange, not a state-licensed sportsbook. Its event contracts are treated as "swaps" under the Commodity Exchange Act (CEA), which puts them under the jurisdiction of the Commodity Futures Trading Commission, a federal financial regulator, rather than state gaming boards. That federal-vs-state distinction is the heart of nearly every legal question about the platform: Kalshi's position is that CEA oversight preempts state gambling law, and it is specifically the sports event contracts that states are contesting.

• Federally regulated venue. Kalshi is a CFTC-designated contract market; its contracts clear as CEA "swaps." It is overseen as a financial exchange, not licensed as a gambling operator.
• The contested piece is sports. A federal-vs-state preemption fight is playing out over whether the CEA gives the CFTC exclusive jurisdiction over sports event contracts. Courts have split — the Third Circuit sided with Kalshi (New Jersey, April 2026), a federal court in New York ruled the other way (July 2026), and a consolidated Tennessee/Ohio case was argued at the Sixth Circuit in late July 2026. State attorneys general expect the question to reach the Supreme Court as early as 2027.
• Non-sports contracts are largely uncontested. The preemption battle centers on sports; the bulk of Kalshi's other event contracts have not drawn the same state-by-state challenges.

For the full picture, see our prediction-market legality overview and the live litigation tracker.

This is informational, not legal advice. The regulatory landscape changes week to week and much of it is preliminary and under appeal — verify current, location-specific status before relying on it.

Frequently asked questions