DraftKings Predictions Hits $1.3bn Annualised Consumer Volume in May; Railbird DCM and Combos Reshape the Competitive Field
DraftKings reported in an 8-K filing on 9 June 2026 that DraftKings Predictions ran $1.3bn in annualised consumer volume in May, +24% month-on-month, with $3.1bn in annualised total volume. The company is investing $200-300m in prediction markets in 2026 and will launch its own DCM (Railbird), in-house exchange technology, and a Super App before year-end.
DraftKings disclosed in an 8-K filing on 9 June 2026 that DraftKings Predictions ran $1.3bn in annualised consumer volume in May 2026, a 24% month-on-month increase. Total annualised volume (consumer plus market-making flow) reached $3.1bn, up 34% over April. The product launched in December 2025; six months later it is operating at a run rate that puts it within an order of magnitude of Kalshi's current weekly volume. April was itself a record: $1bn+ consumer volume and $2.3bn+ total volume, both up 38-43% over March.
The 8-K matters less for the May numbers themselves than for what it signals about DraftKings' strategic posture. CEO Jason Robins told the Q1 earnings call the company will invest $200-300m in its predictions offering in 2026 and explicitly framed it as the wedge for entering new states. Three product launches anchor the roadmap: Railbird, DraftKings' own Designated Contract Market licence application; an in-house exchange technology stack including a futures commission merchant and a derivatives clearing organisation; and a Super App merging sportsbook, iGaming, lottery, and predictions into a single nationwide front-end with state-specific feature gating. Railbird specifically is the move that takes DraftKings out of the customer-of-Kalshi role and into a direct CFTC-regulated competitor.
The Combos product launched in May is the under-rated wedge. Combos let users link two event contracts into a single trade with a multiplied payout — mechanically this is the prediction-market translation of the same-game parlay, the single most important sportsbook product of the past five years. Kalshi has not launched a comparable feature; Polymarket cannot under its current AMM-pool architecture. DraftKings is also alone in offering the integrated retail experience — a customer can shift between state-regulated sportsbook, state-regulated iGaming, and CFTC-regulated event contracts without changing apps. That bundling is something neither Kalshi nor Polymarket can replicate without state gaming licences they have explicitly avoided seeking.
For UK readers the parallel is that DraftKings has had limited UK footprint historically, but its Super App and own-DCM architecture is the kind of integrated retail-derivatives stack the FCA has been signalling it may eventually permit under a tightly-bounded framework. The Kalshi-vs-Polymarket framing is incomplete: by Q4 2026 the field looks like Kalshi, Polymarket, Robinhood (26 million users, MIAXdx DCM), and DraftKings (bundled retail, Railbird DCM, Super App). The CFTC's pending OMB rule and the six federal state-preemption cases will determine the regulatory frame; the volume numbers determine who has leverage when those rulings come down.
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Recent updates
Utah Files Felony Charges Against Kalshi and Its Founders — Second State to Criminally Charge a Platform
Utah filed criminal charges against Kalshi and its two co-founders, Tarek Mansour and Luana Lopes Lara, on October 28 — 13 felonies and a misdemeanour, including a second-degree 'pattern of unlawful criminal activity' count and 12 counts of online gambling promotion. The charges stem from a September sting in which an undercover agent placed 12 sports wagers verified to be in Utah. The CFTC sued Utah the day before to block state enforcement, its tenth such suit. Utah is the second state after Arizona to criminally charge Kalshi, and the first to charge the founders personally. Kalshi called it a 'crazy overreach.'
NBA Names Kalshi and Polymarket Preferred Exchanges — Leaving the NFL Alone in Opposition
The NBA announced on October 26 that it has named Kalshi and Polymarket its 'preferred prediction market exchanges,' signed a non-binding memorandum of understanding with the CFTC on basketball integrity, and expanded its DraftKings deal to include prediction markets — the first league to extend a sportsbook partnership into the category. The exchange deals bar league and team personnel from trading NBA contracts, limit permissible markets, and require sharing suspicious-trading data, in exchange for NBA intellectual property and official data. The NBA joins MLB, the NHL, and MLS as partnered leagues, leaving the NFL as the lone major holdout — and the only league fighting the platforms in court.
CFTC Chair Says Agency Is Watching Prediction Markets for Manipulation Ahead of Midterms
CFTC Chairman Michael Selig said on October 23 that the agency is closely monitoring prediction markets for manipulation ahead of the November 3 midterms, and that it is separately scrutinising oil market trading tied to President Trump's announcements about the war in Iran. Combined midterm open interest on Kalshi and Polymarket stood at $250 million as of October 18, with Kalshi holding 84%. Selig acknowledged the agency often catches political figures trading 'oftentimes after the fact.' The remarks highlight the CFTC's dual role as both the platforms' federal protector and their manipulation watchdog.