ParlayX Wants to Be the Neutral Plumbing Institutions Need for Prediction Markets

ParlayX launched Monday with a specific pitch: institutions trading prediction markets at scale need a single execution layer that sits above both Kalshi and Polymarket, not another point solution tied to one venue. A day later, the more interesting question isn't whether the product works — it's whether the venues themselves will let that layer matter.

The New York-based startup says it has built the first institutional order routing, custody, and capital management system built specifically for prediction markets. Through one API, trading desks can now split capital into "pods" — segregated books with their own balances, permissions, and analytics — while keeping non-custodial control of their own keys. Every trader or bot on a desk gets its own revocable credential, scoped to a single pod, so compliance and risk teams can see everything without being able to trade anything themselves. The system also handles smart order routing, automatically sending orders to whichever connected venue is offering the best price at that moment.

"Institutional participants have been forced to trade from basic retail web interfaces," said Andrew Gonzalez, ParlayX's CEO and co-founder, in the company's launch statement, describing the gap the product is meant to close.

Gonzalez framed the current setup — one login, one wallet, no way to separate a fund's strategies or traders — as workable for a retail user but unworkable for any firm running more than one desk. ParlayX launches integrated with Kalshi and Polymarket, with Limitless and Predict.fun in progress and more venues expected before the next NFL season. Pricing starts at $99 a month for individual traders and scales to negotiated enterprise plans for larger desks.

Gonzalez's own path into the space adds useful context missing from the launch materials: he left market-making firm Flowdesk in January to build ParlayX full-time, then won the SBC Summit Americas "First Pitch" competition in Fort Lauderdale in June, a contest that came with a prize package worth more than $100,000.

The timing is what makes this launch worth a second look rather than a first read. ParlayX's core claim — that no single venue can offer neutral, cross-platform institutional access — is being tested in real time by the venues themselves.

Kalshi has spent the past several months building exactly that access on its own terms: a March partnership with FIS gave institutional clients real-time clearing through systems banks already use, and in May, Clear Street became the first outside firm admitted as an institutional Futures Commission Merchant inside Kalshi's own exchange and clearinghouse. Neither deal routes to Polymarket. ParlayX bets that institutions will still pay for a layer that does — the same logic that has pushed new infrastructure entrants to launch around prediction markets all year as the category has scaled past what any single venue's retail-era plumbing was built to handle.

There's a competing signal from the same week, though. On Thursday, IG Group agreed to buy Underdog, the sports prediction market operator, for up to $1.3 billion — a deal IG framed explicitly around inheriting Underdog's own vertically integrated license stack rather than renting access to someone else's. If the biggest recent move in the sector is a strategic buyer paying a premium to own infrastructure outright, that cuts against the thesis that institutions will default to a shared, neutral routing layer instead. Polymarket's own backing of ParlayX — alongside its recent push into new markets like Türkiye — suggests it sees more value in outside plumbing than Kalshi appears to.

ParlayX says more venue integrations and institutional partners are coming this summer. Whether the answer to "build or route" tilts toward ParlayX's model or Kalshi's proprietary one will likely say more about where institutional prediction-market capital settles than the launch announcement itself did.