FanDuel moves toward event contracts as sportsbook margins shrink

Dancing with the Stars ran its second elimination, and Kalshi and Polymarket traders landed on different names for the frontrunner. That disagreement is a footnote. The structural story underneath it is not.

FanDuel has watched DraftKings build a prediction unit that is now tripling volume on NFL weekends. The question FanDuel's product team has been sitting with is not whether event contracts work — that answer arrived some time ago — but whether a sportsbook that built its identity on parlay culture can make the transition without cannibalising the margins it already has.

The answer, based on how DraftKings has moved, is that the cannibalisation happens regardless. The volume migrates toward shorter-duration, binary-resolution contracts because the user experience is cleaner and the tax treatment, in most jurisdictions, is more favourable. A sportsbook that waits for regulatory clarity before building the product will be building it after the audience has already formed habits elsewhere.

This is where I part from the consensus framing, which treats the sportsbook-to-prediction-market transition as primarily a licensing problem. It is not. Licensing is a cost and a delay, but it is a solved cost for any operator already holding a full-book licence in regulated states. The harder problem is product architecture: how you price a binary event contract against a three-leg parlay that covers the same underlying game, without the parlay desk noticing and flagging internal arbitrage.

I have seen this before in structured products — two desks in the same building pricing the same underlying asset through different wrappers, each convinced the other was leaving money on the table. They were both right. The resolution was a unified book, which took two years and cost one of the desks its independence. FanDuel's prediction unit, if it gets built properly, will eventually sit inside the same risk engine as the sportsbook. The interim period, when the two products run separately, is where the pricing errors will accumulate.

The DWTS market is a useful small example of what that interim looks like. Kalshi and Polymarket disagree on the frontrunner because they have different liquidity profiles and different user bases, not because one of them has better information about ballroom dancing. The divergence is a structural artefact. In a thicker, more unified market, it closes. In the current fragmented landscape, it persists long enough for patient traders to collect it.

FanDuel entering this space does not immediately solve the fragmentation — it adds a third pool with its own liquidity characteristics. But over a two- to three-year horizon, the operator with the largest existing user base and the deepest sportsbook infrastructure has the most to gain from consolidation, and the most to lose from arriving late. The market that exists on whether FanDuel launches a formal prediction product before the end of 2027 is, in my view, underpriced on the yes side.