Parlay takers lose 15.4% on Polymarket US, 25.8% on DKeX, analysis finds
InGame analysis published October 19 shows parlay takers lost 15.4% on Polymarket US and 25.8% on DraftKings' DKeX, matching or exceeding Kalshi's 14.4% rate. Parlay volume topped $200 million across regulated prediction market venues, with more than $6 billion in total parlay activity referenced. The data indicates multi-leg betting structures produce similarly poor outcomes for takers across platforms, while makers profit. Crypto.com is mentioned as among the venues in the briefing.
The cross-platform parlay losses validate a structural problem, not a venue-specific one. Retail traders chasing multi-leg payouts on Polymarket US, DKeX, and Kalshi are systematically paying a premium that flows to market makers. That dynamic threatens the repeat-user base these platforms need to sustain the volume records they are reporting. If traders recognize the 15-25% drag as unavoidable, they may retreat to single-leg markets or exit entirely.
Kalshi is most exposed: its 76% volume lead per Needham relies heavily on parlay flow that the related coverage shows already faces legal challenge in Ohio and Tennessee. A user exodus from complex products would hit Kalshi's headline numbers hardest, since over 70% of its Saturday flow is parlay-driven. The platforms now face a product-design tension — simplify contracts to retain users, or defend multi-leg structures that drive volume but burn takers. The operator that solves that trade-off first keeps the retail base.