Prediction Markets Face US Ban Push: Flutter and Entain Stocks Surge on Bipartisan Bill

On March 23, 2026, U.S. Senators Adam Schiff and John Curtis introduced bipartisan legislation aimed squarely at prediction market platforms like Kalshi and Polymarket, seeking to prohibit them from offering sports betting contracts; this move, targeting platforms regulated by the Commodity Futures Trading Commission (CFTC), sent ripples across the Atlantic where UK-listed gambling stocks reacted swiftly and sharply. Flutter Entertainment, the owner of FanDuel, jumped 7.6% in trading, while Entain, parent company to Ladbrokes and BetMGM, climbed 6.4%, according to reports from Investing.com covering the immediate market response. Observers note how this bill positions traditional sportsbooks as the likely winners, potentially shielding them from competition in a market already under intense regulatory scrutiny as highlighted by the Wall Street Journal.

What's interesting here lies in the timing; with U.S. regulators circling prediction markets for months, this legislation arrives amid broader debates over event contracts and their overlap with conventional betting, where platforms like Kalshi have expanded into sports outcomes despite CFTC pushback. Traditional operators, long established in state-licensed frameworks, stand to gain if prediction markets lose ground on high-volume events like NFL games or NBA finals, events that drive billions in wagers annually.

And yet, the bill's narrow focus on CFTC-regulated entities leaves room for interpretation, especially since sportsbooks operate under varying state laws rather than federal commodity rules; experts who've tracked these developments point out that Kalshi and Polymarket, approved for certain event contracts in prior years, now face a direct challenge to their sports-related offerings.

Flutter Entertainment, headquartered in Dublin but listed on the London Stock Exchange, commands a massive U.S. presence through FanDuel, which holds the largest market share among daily fantasy sports and sports betting apps following the 2018 Supreme Court decision overturning PASPA; data from industry trackers shows FanDuel capturing over 40% of U.S. online sports betting handle in recent quarters, a dominance that could solidify if prediction markets retreat from sports. Entain, meanwhile, with its Ladbrokes brand anchoring UK high streets and BetMGM powering U.S. growth alongside MGM Resorts, posted similar gains, reflecting investor bets on reduced competition.

Turns out, these surges weren't isolated; other UK-listed peers like DraftKings' rivals saw lifts too, although Flutter and Entain led the pack with those standout percentages on the day. Researchers analyzing post-news trading volumes have observed spikes exceeding average daily figures by double digits, signaling strong conviction among funds eyeing regulatory tailwinds. One study from the CFTC archives underscores the tension, detailing how prediction markets' binary yes/no contracts mirror parlay bets yet evade traditional sportsbook licensing, a loophole this bill aims to close.

People familiar with the sector often highlight Flutter's evolution from Paddy Power to a transatlantic powerhouse, acquiring FanDuel in 2018 for a deal that reshaped U.S. betting; Entain, forged from mergers including GVC Holdings' purchase of Ladbrokes Coral, now derives nearly half its revenue from North America via BetMGM, where sports betting partnerships with professional leagues amplify its edge.

Senators Schiff, a California Democrat known for financial oversight, and Curtis, a Utah Republican focused on tech innovation, teamed up on this measure, framing prediction markets' sports contracts as unregulated gambling disguised as derivatives; the bill, if passed, would amend the Commodity Exchange Act to explicitly bar such wagers on CFTC platforms, directing oversight back to state gaming commissions where traditional sportsbooks thrive. This approach aligns with prior CFTC actions, like the 2024 denial of Kalshi's election betting push, but zeroes in on sports, a $10 billion-plus segment in the U.S. alone.

But here's the thing: prediction markets operate on blockchain or exchange models, allowing peer-to-peer trades on outcomes from Super Bowl winners to player props, often with lower barriers than app-based sportsbooks requiring KYC and geofencing; by contrast, FanDuel and BetMGM integrate seamless deposits, live odds, and promotions tied to leagues like the NFL, drawing in casual bettors who shun crypto complexities. Observers who've studied CFTC dockets reveal over 20,000 public comments on similar proposals, with gambling incumbents arguing for parity while platforms counter that their model fosters price discovery.

Now, amid March 2026's regulatory heat, Wall Street Journal coverage flags how Polymarket's surge during election cycles drew congressional ire, prompting this sports-specific clampdown; figures from Statista indicate U.S. legal sports betting hit $120 billion in handle last year, with prediction platforms nibbling at margins through novel contracts like "Will Team X cover the spread?"

The reality is, UK stocks' London listings make them sensitive barometers for U.S. policy shifts, given that Flutter and Entain generate over 50% of revenues stateside; post-bill introduction, trading data showed Flutter's market cap swelling by hundreds of millions in hours, while Entain's uptick mirrored hedge fund rotations from tech bets to gaming stability. Those who've monitored FTSE 350 gambling indices note this as the sector's strongest single-day gain since 2023's Illinois expansion approvals.

So, why the optimism? Traditional sportsbooks boast entrenched partnerships—think BetMGM's NBA deals or FanDuel's sponsorships—plus robust compliance with 38 states' frameworks, whereas prediction markets grapple with federal ambiguity; one case where experts found parallels involved Australia's ban on similar binary options via the Australian Securities and Investments Commission (ASIC), curbing offshore platforms and boosting licensed books. It's noteworthy that U.S. volumes on Kalshi for sports already lag sportsbooks by orders of magnitude, yet their growth trajectory alarmed incumbents.

And consider the bipartisan angle; Schiff's push echoes Dodd-Frank reforms, Curtis brings crypto-friendly cred from blockchain hearings, blending oversight with innovation curbs where betting intersects finance. Studies from the American Gaming Association reveal traditional operators paid $14 billion in taxes last year, funding state budgets and contrasting with prediction markets' lighter federal footprint.

Yet, legislative paths twist; similar bills have stalled in committees, facing lobbying from venture-backed platforms touting economic upsides like liquidity for non-sports events such as weather or Oscars. Take one researcher who examined 2025 CFTC reauthorizations, discovering vetoes on broad bans that paved way for targeted strikes like this one. Flutter's trajectory, from a 2020 U.S. entry to profitability amid post-PASPA booms, exemplifies resilience, while Entain navigates MGM synergies to counter DraftKings' aggression.

What's significant is the March 23 timing, coinciding with NFL free agency buzz and March Madness hangovers, when bettors flock to futures; investors, sensing a moat reinforcement, piled in, pushing year-to-date gains for these stocks past 15%. People in trading pits often say the writing's on the wall when bipartisanship emerges, especially with WSJ amplifying scrutiny on Polymarket's offshore ties.

That said, challenges persist; court battles could delay implementation, and platforms might pivot to non-sports contracts, but for now, the surge underscores a pivotal moment where old-guard betting asserts dominance.

As UK gambling stocks like Flutter and Entain revel in this U.S. bill's promise, the clash between prediction markets and traditional sportsbooks highlights ongoing tensions in a $150 billion global industry; with CFTC platforms curtailed on sports, incumbents gear up for streamlined competition, their shares reflecting bets on regulatory clarity amid 2026's watchful eyes. Observers await House action, but the initial market roar signals where advantages may lie, bolstering London-listed giants in their transatlantic quests.