Tavis Johnson spent part of last Thursday afternoon trying to place a trade on DraftKings' new prediction market platform, DKeX. He found three markets worth looking at and thin order books on all of them. He moved on.
That anecdote, sourced from a user forum thread that circulated among traders this week, captures something the volume figures are starting to confirm. DraftKings has entered the prediction market space, and in the early weeks the gap between its brand recognition and its actual liquidity is wide enough to matter.
Kalshi has spent three years building the infrastructure that makes a prediction market usable at scale — not just the contracts, but the order flow, the arbitrageurs, the institutional participants who keep spreads tight enough that a retail trader doesn't give up half a percent on entry. DraftKings has the marketing machine and the existing customer base, but those advantages don't transfer automatically into a market where the product is the price itself.
I've seen this before in structured products. The second mover in a thin market doesn't just face a volume deficit — it faces a credibility problem. Traders who care about execution quality will route to where they know the fill is reliable. Until DKeX gives them a reason to believe otherwise, the rational default is Kalshi. Volume begets volume in a way that's difficult to disrupt without either a pricing edge or a liquidity subsidy, and there's no public indication DraftKings is deploying either.
The deeper question is what DraftKings is actually building toward. If DKeX is meant to serve existing sports bettors who want election and economic markets alongside their parlays, it may not need to match Kalshi on depth — it needs to be good enough. That's a different product, aimed at a different user, and it might work. The DraftKings customer converting from a same-game parlay to a Fed rate contract is not the same person as the trader running arbitrage between Kalshi and Polymarket at midnight.
But the prediction market that wins the next cycle won't be the one with the best sports betting cross-sell. It will be the one with the most accurate prices, and accurate prices require participants who are there to be right, not just to be entertained. Kalshi has more of those participants right now. The $9.4 billion weekend volume figure across the sector shows the market is large enough to support multiple platforms, but market share in a thin-liquidity product clusters more than in sports betting, where any licensed operator can take a three-leg parlay.
Prediction markets require infrastructure beyond the contracts themselves: order flow, arbitrageurs, and institutional participants who keep spreads tight enough for retail traders to trade efficiently. Kalshi spent three years building this ecosystem, creating conditions where reliable execution attracts volume. Without tight spreads and dependable fills, traders route their orders elsewhere, making the initial volume deficit self-reinforcing.
DKeX entered prediction markets with thin order books across its early offerings, while Kalshi had already cultivated three years of order flow and institutional participation. DraftKings' advantages in marketing and customer base do not automatically transfer to prediction markets, where product quality is the price itself. Without a public pricing edge or liquidity subsidy, rational traders default to Kalshi's more reliable fills.
Market share in thin-liquidity products clusters more tightly than in sports betting, where multiple licensed operators can compete for the same wager. The $9.4 billion weekend volume shows the sector is large enough for multiple platforms, but volume begets volume in ways difficult to disrupt. Traders converge on the platform with the most accurate prices, which requires participants focused on being right rather than entertainment.
Traders run arbitrage between Kalshi and Polymarket, particularly at off-peak hours like midnight, according to Sebastian Montague of Gambity. These arbitrageurs are essential to prediction market accuracy because they profit by correcting price discrepancies across platforms. Their presence indicates Kalshi and Polymarket have sufficient liquidity to support institutional trading activity that DKeX has not yet matched.