Kalshi’s Owners: Inside the $22 Billion Company
Expertise: Online casino, iGaming
Kalshi is valued at $22 billion, and the two people who started it as MIT students still appear to own nearly a quarter of it between them. Forbes estimates that co-founders Tarek Mansour and Luana Lopes Lara each hold roughly 12%, which prices either stake at about $2.6 billion on paper. For a company that has raised billions from Sequoia Capital, Paradigm, Andreessen Horowitz, Coatue, Morgan Stanley and other major investors, the answer to who owns Kalshi is surprisingly founder-heavy.
Those percentages are estimates, because Kalshi is privately held and publishes no cap table. The public record still says plenty. The founders sit as executives and directors, their biggest investors hold board seats next to them, and an August SEC filing shows more than a billion dollars in equity sold this year alone. All of this happened while Kalshi was busy turning prediction markets into gambling’s most contested space, with markets stretching across sports, politics and economics and a valuation that grew elevenfold in under a year.
Who Owns Kalshi Today?
Kalshi Inc. is a private company with no complete public shareholder register. Forbes’ May 2026 estimate puts Mansour and Lopes Lara at approximately 12% each, so if those figures hold, the founders own around 24% between them after six years and several billion-dollar financing rounds. The rest sits with venture firms, institutions, earlier backers and employees whose individual percentages have never been disclosed.
Mansour and Lopes Lara are the only shareholders with even an estimated number attached to their names, which makes them the anchor of any Kalshi owner question, though neither can accurately be called the sole owner. Keeping roughly a quarter of the company through this much late-stage fundraising is itself worth pausing on.
An SEC filing from August 25, 2026 fills in a newer corner of the picture. Kalshi’s August Form D reports an equity offering of nearly $1.5 billion, of which about $1.12 billion had been sold to 71 investors by the filing date, with the first sale recorded on April 3. The company has said the filing relates to its Series F round. It names none of the 71 investors and assigns no ownership percentages.
The 71 figure is not a shareholder count either. A Form D covers participation in one specific private offering, not a company’s complete register, so earlier investors, employees holding equity and buyers from prior rounds sit outside it entirely.
Two Founders, Similar Stakes and Very Different Roles
Mansour and Lopes Lara met at MIT and founded Kalshi in 2018, both arriving through quantitative finance with stints at firms including Goldman Sachs and Citadel. Lopes Lara took the stranger route there. Before MIT, she trained at an elite ballet school in Brazil and danced professionally in Austria, a background about as far from running a derivatives exchange as resumes get.
How they divide the company is the more revealing part. Mansour handles strategy, fundraising, policy, regulation and select product calls. Lopes Lara runs the daily operation. On a Sequoia podcast this year, Mansour said the two “disagree by design”, deliberately taking opposite sides whenever Kalshi has to weigh growth against regulatory risk.
The clearest test of what founder control actually means came when the CFTC rejected Kalshi’s election contracts. Lopes Lara pushed to sue the regulator, and Forbes reported that nearly all of the company’s investors and advisors opposed the idea. The founders sued anyway, won in federal district court in 2024, and had election contracts live in time for that year’s presidential race.
For an ownership story, the lawsuit episode carries real information. Investors had serious capital at risk and strong opinions about protecting it, and the Kalshi founder pair still had enough authority to bet the company on a case their own backers hated. Equity and control are not the same thing, and at Kalshi both still lean toward the two people who started it.
Kalshi’s Investors Bought Stakes and Board Seats
Some of the money arrived with homework attached. Forbes recounts Charles Schwab turning up at Kalshi’s Soho office in 2023 carrying thick binders of research on the startup, to the visible surprise of two founders still in their twenties. Schwab and Henry Kravis had already backed the company as angels around Sequoia’s $30 million Series A in 2021, well before prediction markets became a fashionable bet.
The base widened fast from there. Paradigm led a $185 million Series C at a $2 billion valuation in June 2025, and Sequoia and Andreessen Horowitz co-led a $300 million round at $5 billion only a few months later. December 2025 brought a $1 billion Series E at $11 billion, led by Paradigm with Sequoia, Andreessen Horowitz, IVP, ARK Invest and CapitalG among the participants. By May 2026, Coatue was leading the $1 billion Series F at double that valuation, joined by Sequoia, Andreessen Horowitz, IVP, Paradigm, Morgan Stanley and ARK Invest.
The Kalshi investors show up in governance, not just in funding announcements. The August Form D lists Mansour and Lopes Lara as executives and directors, then names Alfred Lin, Michael Seibel and Matt Huang as directors. Lin is a Sequoia partner and Huang co-founded Paradigm, so the two firms that led most of the big rounds hold seats where the major decisions get made.
What no public document does is assign Sequoia, Paradigm, Coatue or any other fund a percentage. Their participation is confirmed while their current holdings stay private, which leaves the founders’ estimated 12% stakes as the only individual ownership figures anyone outside the company can point to.
How Kalshi Went From $2 Billion to $22 Billion in 11 Months
Kalshi’s financing calendar compressed into a sprint: $2 billion in June 2025, $5 billion in October, $11 billion in December, $22 billion in May 2026. Four valuation marks in eleven months, each round roughly doubling the one before it, turned a specialist event-contract exchange into one of the most valuable private companies in American finance.
The Kalshi valuation is also what put both founders on billionaire lists. Twelve percent of $22 billion works out to about $2.64 billion, matching Forbes’ $2.6 billion estimate for each of them, double the $1.3 billion they were pegged at when the company carried an $11 billion price only five months earlier. Lopes Lara became the world’s youngest self-made woman billionaire along the way, at 29.
These are paper fortunes, not liquid ones. A financing valuation prices one transaction and one share class, founder shares can carry different rights from the preferred stock institutions hold, and none of it can simply be sold at the last round’s price. Anyone searching for Kalshi stock runs into the same wall: there is no NYSE or Nasdaq ticker, and a standard brokerage account cannot buy in. Ownership has only ever moved through private rounds open to funds, institutions and other eligible investors.
The business behind the numbers is at least concrete. Kalshi said in May that annualized trading volume had tripled in six months, from $52 billion to $178 billion, with institutional volume up 800%, and that the new capital would fund products for hedge funds, asset managers, proprietary trading firms and insurers. The climb may not be over either. The Financial Times has reported talks about a further raise at a valuation near $40 billion, though nothing at that level had been confirmed as closed at the time of writing.
The Court Fights That Could Reprice Kalshi
Kalshi’s whole model rests on a piece of federal paper. KalshiEX LLC has held designated contract market status from the Commodity Futures Trading Commission since November 2020, and CFTC records for Kalshi still list the exchange as designated, with an amended order in 2025 permitting intermediated futures trading. Ask what is Kalshi in corporate terms, and this is the answer: a federally regulated derivatives exchange, not a licensed sportsbook.
In late August, the Ninth Circuit sided with Nevada, ruling that Kalshi’s sports event contracts function as sports bets rather than federally protected swaps and leaving state regulators free to enforce gambling law against them. The decision conflicts with an earlier Third Circuit ruling that leaned Kalshi’s way, and a circuit split of that kind tends to end at the Supreme Court.
New York produced a separate challenge. After the state’s attorney general sued to shut the exchange down as an unlicensed gambling business, the CFTC invoked emergency powers and ordered Kalshi to keep operating, declaring the state action a market emergency. The order kept the exchange open without settling the underlying lawsuit.
Owners feel these fights directly. Sports contracts have become commercially central to Kalshi, so every ruling that shrinks the map for them touches revenue, expansion plans and the valuation the next round of investors will be willing to accept.
Kalshi vs Polymarket – Similar Market and Different Ownership
The Kalshi vs Polymarket comparison usually runs through products, trading volumes and regulators. Ownership separates the two just as cleanly. Kalshi has a founding pair holding an estimated 12% each, a board where Sequoia and Paradigm sit beside them, and a long roster of funds behind that, none of which has disclosed a stake anywhere near a controlling one.
Polymarket’s ownership took a different shape. Shayne Coplan founded it and still runs it, while Intercontinental Exchange has disclosed preferred holdings equal to roughly 14% on a fully diluted basis, together with board rights, the rare strategic outside stake that can be measured through public filings. Kalshi offers no such number. The closest its filings come is a list of directors.
What survives all the caveats is a company still substantially owned and actively run by the two people who founded it, backed by some of the biggest names in venture and institutional capital. The August Form D shows that substantial private financing continued into 2026, while the reported $40 billion talks could change the ownership picture again.
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