NBA Playoffs: Eastern Conference Champion

Platform comparison

Active sub-markets

Market context

The real-world event here is simple: the market resolves to YES if the New York Knicks win the 2025–26 Eastern Conference Finals, and to NO if any other team does. A YES share pays out $1 if that happens before the 16 June 2026 settlement deadline; a NO share pays out if it does not. With the market currently implying 13% for YES, traders are assigning the Knicks only a modest chance of emerging from the East despite their position in the play-offs.

That price sits well below some sports books and other venues, which shows how much weight prediction markets place on current information rather than reputation alone. ESPN reported the Knicks had taken control of the East after their Game 1 comeback against Cleveland, with New York shortening to -425 on that board and Cleveland moving to +320. Polymarket’s own market has also been heavily one-sided, with New York around 87% and Cleveland about 13%, underlining that the conference race is being read through the lens of the latest play-off results rather than preseason expectations.

For traders, the key catalysts are injury updates, home-court swings, and the schedule of the series itself. A single absence or a change in minutes for a lead scorer can move the implied probability quickly in a best-of-seven series, especially with each game carrying outsized importance. Recent reporting from ESPN is relevant because it ties the current odds move directly to the Knicks’ Game 1 win and the Cavaliers’ response, so further results or team news are likely to reshape the market again as the series develops.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We track NBA Playoffs: Eastern Conference Champion on the five venues with material liquidity for prediction markets. Live odds come from the Polymarket Polygon order book — the only source that ships real-time data under an open licence. For Kalshi, Betfair and Manifold we list platform attributes (fee, KYC, settlement, payment) instead of fabricated odds, because their APIs use non-comparable contract definitions.

Resolution & payout

At resolution the UMA oracle takes over: a proposer posts the outcome with a bond, any token holder can dispute within two hours. Without dispute the result is accepted and the smart contract distributes USDC instantly.

On Kalshi (CFTC-regulated) resolution runs through their in-house clearing engine in USD. Betfair Exchange settles after match end in the account's local currency. Manifold pays no cash — only its in-platform "mana" currency.

FAQ

Where can I trade this market with the lowest fees?

On PolyGram, which mirrors the Polymarket order book at 0% fees. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

Is this market available outside the US?

PolyGram is available in most jurisdictions where Polymarket isn't directly accessible. Polymarket itself is geo-blocked in the US/UK/EU. Always check local regulations.

How does resolution work?

Through the UMA Optimistic Oracle on Polygon: a proposer submits the outcome, a two-hour challenge window opens, and USDC payouts settle automatically once the result is final.

What's the difference between YES and NO shares?

A YES share pays $1.00 if the event happens, $0 otherwise. A NO share pays $1.00 if the event doesn't happen. The market price between 0¢ and 100¢ is the implied probability.

What does it cost to trade on PolyGram?

Zero. PolyGram routes every order to the live Polymarket order book; the only cost is the Polygon network fee, typically under $0.01 per transaction.