Fireplace shuts down: users have until September 30 to withdraw funds and migrate positions

Two Prediction Markets Shut Down Hours Apart as Kalshi and Polymarket Take 93% of Volume | The Defiant

Trepa and Fireplace prediction markets shuttered Monday; Kalshi and Polymarket command 93% of $14.87B volume. Winner-take-most consolidation: genuine active users (hundreds of thousands) cannot sustain alternative mechanisms—liquidity pools require the scale only dominant venues provide.