Prediction market operator Kalshi has raised about $1.12 billion through an equity offering that began in April, a new securities filing shows, adding another piece to a rapid fundraising cycle that has pushed the company into the upper ranks of privately valued financial technology firms.
A Form D filed with the Securities and Exchange Commission on Aug. 25 shows Kalshi has sold roughly $1.12 billion of securities from an offering totaling nearly $1.5 billion. About $380 million remains available under the offering, which recorded its first sale on April 3.
The filing does not identify the investors or tie the proceeds to a specific funding announcement. However, the period overlaps with Kalshi’s $1 billion Series F financing disclosed on May 7, suggesting that round accounts for most of the securities reported as sold.
Kalshi said the Series F valued the company at $22 billion and was led by Coatue, with participation from Sequoia Capital, Andreessen Horowitz, IVP, Paradigm, Morgan Stanley and ARK Invest. The company said at the time that institutional trading volume had risen 800% over the previous six months, while annualized trading volume had more than tripled from $52 billion to $178 billion.
The financing came only five months after Kalshi raised another $1 billion at an $11 billion valuation in December 2025. That Series E was led by Paradigm and included Sequoia, Andreessen Horowitz, Meritech Capital, IVP, ARK Invest, Anthos Capital, CapitalG and Y Combinator.
Investor appetite may not have stopped at $22 billion.
Kalshi has since been reported to be pursuing financing at a $40 billion valuation, which would represent an increase of about 82% from the May round. Reports in June said the company was discussing a new raise that could close as early as the third quarter.
Those discussions appeared to advance this month. Kalshi was reported on Aug. 12 to be in talks to raise at least $750 million, with Sequoia Capital and Wellington Management discussing co-leading the round. The size remained subject to change.
The new SEC filing does not establish that the reported $750 million financing has closed. In fact, the distinction is important: only about $380 million remains under the nearly $1.5 billion offering disclosed in Tuesday’s filing. A full additional $750 million transaction would therefore require the existing offering to be expanded, a separate securities offering, or another structure if it proceeds as reported.
Trading Activity Gives Investors a Growth Story
The fundraising comes as trading on prediction markets has moved well beyond the activity seen around the 2024 US presidential election.
Kalshi processed roughly $40 billion of contracts in July, compared with about $13 billion across rival Polymarket‘s operations, according to recent market data. That gives Kalshi a substantial lead in a sector where trading volumes have been rising quickly. Recent reporting has also put Kalshi’s July revenue run rate above $4 billion on an annualized basis, helped by trading around the World Cup and other sports markets.
The company is also trying to broaden what it can sell. In May, Kalshi launched perpetual futures, moving beyond the event contracts on which it built its business and presenting itself increasingly as a wider derivatives exchange rather than solely a prediction market.
Its expansion is occurring alongside an unsettled regulatory debate.
Kalshi operates a Commodity Futures Trading Commission-regulated designated contract market, but several states have argued that sports event contracts amount to sports betting and should require state gambling licenses. A Massachusetts court granted a preliminary injunction in January preventing Kalshi from offering sports-related event contracts there without the required state license.
At the federal level, the CFTC has been working on a broader framework for prediction markets. The regulator said in a June proposal that event-contract trading had reached $25 billion in March alone and acknowledged that the market had expanded rapidly across sports, politics, weather, entertainment and other categories.
That leaves Kalshi raising money against two competing realities: its volumes and private-market valuation are climbing extraordinarily quickly, while the legal boundaries around one of its biggest areas of activity are still being tested.
The $40 Billion Question Is Now About Durability
A $40 billion valuation would tell us something bigger than simply that investors like prediction markets. It would mean investors are pricing Kalshi as if the category can become a large, lasting financial market rather than a temporary burst of speculative activity.
The speed of the repricing is striking. Kalshi was worth $11 billion in December. Five months later, investors accepted $22 billion. A reported $40 billion round would put the company at more than 3.6 times its December valuation in less than a year.
There is a business case for some of that enthusiasm. Liquidity tends to reinforce itself in exchange businesses. Traders prefer the venue where they can get better prices and execute larger orders; more traders then attract market makers, which can create still deeper liquidity. Kalshi’s widening lead in trading volume could therefore become more valuable than the headline volume numbers alone suggest.
But $40 billion also raises the standard Kalshi has to meet.
July benefited from an unusually strong sports calendar, including the World Cup. A revenue number annualized from one exceptionally active month is very different from revenue that repeats consistently across an entire year. If the reported annualized revenue pace of more than $4 billion is used as a rough benchmark, a $40 billion valuation works out to around 10 times that revenue rate. That does not look absurd for a rapidly growing financial platform, but the calculation becomes far less comfortable if trading falls substantially after major sporting or political events.
There is also concentration risk. Sports have become a major driver of prediction-market activity, precisely the part of the business attracting some of the strongest challenges from state regulators. Kalshi is effectively arguing that federally regulated event contracts are financial derivatives, while states increasingly argue that a contract paying out according to the winner of a football game is sports betting regardless of what regulatory wrapper surrounds it.
That dispute matters much more at $40 billion than it did when Kalshi was a small startup.
The company can reduce that dependence by building deeper institutional markets around economics, weather, financial risks and other events, and its expansion into perpetual futures suggests management wants Kalshi to become a broader trading venue. If that happens, today’s valuation could eventually look less like a bet on prediction markets and more like a bet on a new derivatives exchange.
For the moment, however, the SEC filing confirms the capital already sold, not the next valuation. The most revealing document may be the one that comes next. If Kalshi closes the reported $750 million round near $40 billion, investors will have almost doubled the price of the company only months after putting $1 billion into it at $22 billion.
That would be a powerful vote of confidence. It would also leave very little room for growth to slow.