S&P Dow Jones Indices is pitching itself as infrastructure for prediction markets, not as a trading venue. In a September 23 post, chief executive Catherine Clay said index providers can supply the governed data, methodology and settlement discipline that event-contract markets need as products move closer to mainstream financial benchmarks.
The pitch matters because prediction markets are splitting into two tracks. Kalshi and other CFTC-regulated venues are fighting state gambling regulators over sports contracts, while securities-market operators such as Cboe and Nasdaq are building fixed-payout products around equity indexes under SEC-regulated options rules. S&P DJI is positioning its benchmarks as the neutral measurement layer for the second track.
What is S&P Dow Jones Indices proposing for prediction markets?
S&P DJI is not proposing to launch a prediction exchange. Clay’s September 23 LinkedIn/Pulse post, titled “What Prediction Markets Need Next,” described the index provider as a potential “referee, scorekeeper, and rulebook” for contracts that settle on inflation, home prices, volatility, economic growth, credit conditions or sector performance.
That is a data-licensing and governance argument. S&P DJI already licenses the S&P 500 and other benchmarks to ETF issuers, mutual funds, institutional investors and derivatives exchanges. Clay wrote that an estimated $23 trillion was indexed or benchmarked to the S&P 500 at the end of 2025, including $7.7 trillion in indexed assets across mutual funds, institutional funds, separately managed accounts and insurance products, citing S&P DJI’s Annual Survey of Assets.
The same model could extend to event-contract settlement. If a contract pays out based on an index level, an economic benchmark or another rules-based measure, the market needs a way to decide the result that participants view as independent of the trading venue. Clay framed that as a role for benchmark administrators with documented methodologies, controls and governance.
Because the post came from S&P DJI’s chief executive, it should be read as a stakeholder argument, not an outside assessment of the industry’s needs. Still, the timing is notable: traditional exchange groups are already designing prediction-style contracts that lean on familiar market infrastructure rather than on the looser question-writing practices associated with consumer prediction platforms.
Why does settlement infrastructure matter for event contracts?
Event contracts need clear resolution rules because a small wording dispute can become an economic dispute. A “yes” or “no” contract tied to an official inflation print, an equity-index close or a central-bank decision is only as credible as the source used to settle it and the process for handling corrections, market interruptions or ambiguous outcomes.
That issue becomes more important when the customer base expands beyond hobbyists and politically engaged retail traders. Institutions already use indexes as reference points for passive funds, structured products, futures and options. S&P DJI’s argument is that prediction markets tied to financial or economic outcomes will need the same kind of independently governed reference data if they want to attract more conservative capital.
The claim also speaks to a weakness in many event-contract markets: the exchange that lists a question often controls or heavily influences the resolution process. For politics, sports and culture questions, that can mean relying on media reports, league announcements or bespoke rulebooks. For index-linked contracts, an established benchmark administrator can reduce that discretion, although it does not eliminate commercial incentives around licensing and product design.
How does Cboe Predicts fit into the shift?
Cboe Global Markets formally moved into prediction-style products on June 23, when it announced Cboe Predicts, a suite that began with binary option contracts based on the Mini-S&P 500 Index. Cboe said the contracts trade under the symbols XSPBW and XSPBX, are centrally cleared through the Options Clearing Corporation and were available at launch through Interactive Brokers, with Charles Schwab expected to add access in the following months.
Cboe described the products as binary options listed within the U.S. listed-options framework, not as CFTC event contracts. That distinction is central to the strategy. The contracts reference the Mini-S&P 500 Index, trade through brokerage infrastructure familiar to options customers and clear through OCC, rather than settling through a standalone event-contract venue.
The launch materials quoted JJ Kinahan, Cboe’s head of retail expansion and alternative investment products, saying demand for shorter-dated, outcome-based trading made XSP binary options a natural extension of Cboe’s S&P 500 options suite. That framing puts Cboe Predicts closer to retail options trading than to sports or political prediction markets.
Nasdaq has moved in a similar direction. In Release No. 34-105342, published in the Federal Register on May 5, the SEC granted accelerated approval to Nasdaq MRX’s proposal to list and trade binary broad-based index options, called Outcome-Related Options, on the Nasdaq-100 Index and the Nasdaq-100 Micro Index. The order set a proposed position limit of 25,000 contracts on the same side of the market for binary NDX and XND options.
What did the Sixth Circuit change for Kalshi?
The legal backdrop sharpened on September 25, when the U.S. Court of Appeals for the Sixth Circuit ruled against Kalshi in consolidated Ohio and Tennessee cases, KalshiEX LLC v. Schuler and KalshiEX LLC v. Orgel. Judge Julia Smith Gibbons wrote for a unanimous panel that Kalshi had not shown its sports-event contracts fit the statutory definition of “swap” under the Commodity Exchange Act.
The Sixth Circuit affirmed the Southern District of Ohio’s denial of Kalshi’s motion for a preliminary injunction, vacated the Middle District of Tennessee’s preliminary injunction in Kalshi’s favor and remanded the Tennessee case for further proceedings. The panel also held that, even assuming the contracts were swaps, the Commodity Exchange Act did not expressly or impliedly preempt Ohio’s or Tennessee’s gambling laws.
The opinion drew a line between event contracts with direct financial utility and sports questions that the court viewed as economically remote. It cited interest-rate prediction as an example with hedging value, then contrasted that with contracts where, in the court’s words, there is “no conceivable reason” the market would need to know whether a broadcaster says a random word on air.
That ruling deepened the split among federal appeals courts. The Third Circuit ruled for Kalshi in KalshiEX LLC v. Flaherty on April 6, holding that Kalshi was likely to succeed in showing federal preemption against New Jersey’s enforcement of state gambling law. The Ninth Circuit ruled the other way in KalshiEX LLC v. Assad on August 28, affirming a Nevada order that dissolved Kalshi’s preliminary injunction. The Sixth Circuit opinion noted that a Fourth Circuit appeal in KalshiEX LLC v. Martin remained pending.
New Jersey has already asked the U.S. Supreme Court to take the dispute. In a petition for writ of certiorari filed September 2 in Flaherty v. KalshiEX, the state argued that Kalshi’s position would federalize sports betting at the expense of state gaming laws. The petition cited the Third Circuit decision and the emerging conflict with other appellate courts.
Why are index providers attractive to financial prediction markets?
For index companies, prediction markets offer a licensing opportunity without the full risk of operating an exchange. S&P DJI can provide benchmark data, calculation rules and governance processes while leaving customer onboarding, trade execution, clearing and regulatory registration to exchanges and brokerages.
For exchanges, index providers bring credibility and an existing commercial model. An event contract tied to the S&P 500, Nasdaq-100 or another benchmark can point to published rules, market-wide recognition and established procedures for calculation. That is a cleaner proposition than a contract whose outcome depends on interpreting a social-media post, a broadcast moment or a platform-specific resolution committee.
The tradeoff is concentration. A small group of benchmark administrators could become key toll collectors if financial prediction markets scale around index-linked products. That would give firms such as S&P DJI and Nasdaq more influence over which economic events become easily tradable and how those events are defined for settlement.
What is the next milestone?
The next concrete legal milestone is at the Supreme Court, where New Jersey’s September 2 petition in Flaherty v. KalshiEX asks the justices to resolve whether federal commodities law blocks states from applying gambling laws to Kalshi’s sports contracts. Kalshi’s response deadline was extended to November 9, according to the Supreme Court docket materials cited in related filings.
For the financial-index side of the market, the watch point is brokerage distribution. Cboe said on June 23 that XSPBW and XSPBX were available through Interactive Brokers and expected to roll out at Charles Schwab in the following months. If those products gain traction through mainstream brokerage channels, S&P DJI’s benchmark-governance pitch becomes less theoretical and more like a new licensing category for the index business.
