DraftKings Predictions Hits $1.3B Annualized Consumer Volume in May; Railbird DCM and Combos Reshape the Competitive Field
DraftKings reported in an 8-K filing on June 9, 2026 that DraftKings Predictions ran $1.3 billion in annualized consumer volume in May, +24% month-over-month, with $3.1 billion in annualized total volume. The company is investing $200-300 million 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 June 9, 2026 that DraftKings Predictions ran $1.3 billion in annualized consumer volume in May 2026, a 24% month-over-month increase. Total annualized volume (consumer plus market-making flow) reached $3.1 billion, 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 month: $1B+ consumer volume and $2.3B+ total volume, both up 38-43% over March. The growth curve is not yet flattening.
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 $200-300 million 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 license application; an in-house exchange technology stack including a futures commission merchant and a derivatives clearing organization; 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 (a Phillies run line and a Knicks/Spurs total, in the company's own example) into a single trade with a multiplied payout. Mechanically this is the prediction-market translation of the same-game parlay, which is 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. If Combos drives volume the way SGPs drive sportsbook revenue, the competitive map changes. DraftKings is also alone in offering the integrated retail experience — a customer using DraftKings can shift between licensed sportsbook (state-regulated), iGaming (state-regulated), and event contracts (CFTC-regulated) without changing apps. That bundling is something neither Kalshi nor Polymarket can replicate without state gaming licenses they have explicitly avoided seeking.
Our read on what this does to the field. The Kalshi-vs-Polymarket framing that dominated 2024-2025 coverage is now incomplete. By Q4 2026 the field looks like Kalshi (CFTC-native, highest sustained weekly volume), Polymarket (on-chain advantage, expanding institutional pipeline via FalconX), Robinhood (26M-user distribution, MIAXdx DCM), and DraftKings (bundled retail experience, own DCM via Railbird, Super App distribution). Two-platform comparisons made sense when DraftKings Predictions was a re-skinned Kalshi white-label and Robinhood was a small slice of total volume. Both assumptions are out of date. The CFTC's pending OMB rule and the six federal state-preemption cases will determine the regulatory frame this all plays out in; the volume numbers will determine who has the most leverage when those rulings come down. DraftKings posting a six-month launch-to-$1.3B trajectory while announcing a $300M annual investment puts it among the operators that get to influence the regulatory outcome, not just live inside it.
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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 misdemeanor, 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 of 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 scrutinizing 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 attempting to trade 'oftentimes after the fact.' The remarks highlight the CFTC's dual and somewhat conflicting role as both the platforms' federal protector and their manipulation watchdog, at a time when the agency has shed enforcement staff.