The IG Group Underdog acquisition, announced on 30 July 2026, commits the London-listed broker to paying up to approximately $1.3 billion for the US prediction markets and daily fantasy sports operator, placing an entirely new category at the centre of its growth strategy.
Deal Structure: What IG Is Actually Paying
The headline figure breaks into two parts. The upfront consideration is based on an enterprise value of approximately $1.1 billion, with an earnout (a conditional bonus paid if performance targets are met) of up to approximately $200 million on top.
IG expects an upfront equity value of about $963 million, settled through approximately 24.1 million new shares and a cash payment of about $380 million. That share component means existing IG shareholders face some dilution (the reduction in their proportional ownership as new shares are issued).
To fund the cash payment, the earnout, and the refinancing of approximately $160 million of Underdog’s existing debt, IG is arranging a bridge facility of up to $950 million. A bridge facility is short-term borrowing used to cover a transaction until longer-term financing is arranged.
Separately, eligible Underdog employees could receive up to $850 million under a management incentive plan. IG is clear this sits outside the consideration paid to selling shareholders and is expected to be funded from Underdog’s own earnings. The maximum payout requires Underdog to hit EBITDA (earnings before interest, tax, depreciation and amortisation) of at least $400 million in 2028 and $700 million in 2029.
What the IG Group Underdog Acquisition Actually Buys
Underdog brings something most prediction market operators lack: its own exchange and clearing infrastructure. The company acquired the Commodity Futures Trading Commission (CFTC)-registered exchange through two entities, Aristotle Exchange DCM Inc and Aristotle Exchange DCO Inc, in a transaction announced on 9 March 2026. Underdog had initially launched its predictions offering in collaboration with Crypto.com, operating as an intermediary on other exchanges, before launching its own proprietary exchange in July 2026.
The result is a vertically integrated US licence stack covering a futures commission merchant, designated contract market and derivatives clearing organisation. Put plainly: IG would own the brokerage, the exchange and the clearing house. Underdog CEO Jeremy Levine had framed the ambition at launch: ‘Prediction markets are one of the most exciting developments we’ve seen in a long time. While still new and evolving, one thing is clear – the future of prediction markets is going to be about sports – and no one does sports better than Underdog.’
IG believes the infrastructure could also support contracts referencing crypto, financial and macroeconomic events, as well as cultural and political outcomes. Completion is expected in late 2026 or early 2027, subject to regulatory approvals.
H1 Numbers and the Market’s Initial Reaction
IG published its H1 results alongside the deal announcement. Total revenue rose 18% to £642.8 million, with active customers up 66% to 843,600 and first trades up 107% to 121,400, both including acquisition effects. On an organic continuing-operations basis, active customers grew 13% and first trades rose 74%.
Net trading revenue grew 21% to £588.8 million, according to the H1 2026 earnings call. The EBITDA margin came in at 43.9%, down from 49.6% in H1 2025, with management pointing to consolidation costs, strategic review expenses and a deliberate choice to keep investing behind growth.
Despite hitting consensus forecasts exactly, with adjusted earnings per share of 68.9 pence, IG’s stock fell 9.7% on the day of the announcement. RBC Capital Markets subsequently argued the selloff was an overreaction. The broker holds an outperform rating with a 1,850p price target, implying approximately 39% upside from the 1,371p level when its note was published on 5 August 2026, according to Proactive Investors.
US Scale and the Regulatory Uncertainty
IG projects the deal would more than double its US revenue and grow US monthly active customers more than tenfold. Based on 2025 results, the US would have represented approximately 40% of pro forma group revenue, against 22% for IG alone.
The company expects the transaction to be broadly neutral to adjusted earnings per share in year one and double-digit percentage accretive by year three. Management has also reaffirmed guidance of at least 10% organic total revenue growth annually beyond 2026.
Prediction markets regulation remains unsettled. RBC notes that IG management expects the legal question to reach the US Supreme Court, with resolution expected within 24 months. Underdog’s licence stack means it can pivot to daily fantasy sports, a sportsbook model, or financial products if the regulatory environment turns restrictive. CFTC chair Michael Selig has said the regulator will issue formal rulemaking guidance on prediction markets in the very near future, which could clarify the landscape before the deal closes.
For IG shareholders, the NFL season starting in the second half of 2026 is the first real test: management views it as a one-off customer acquisition window and plans heavier marketing spend around it before shifting focus to profitability from 2027 onwards. The earnout targets, requiring Underdog to generate $400 million of EBITDA in 2028, will tell investors quickly whether the strategic bet has landed.
