Kalshi has overtaken Polymarket after recording its first-ever week above the $2 billion trading volume mark. In the final days of December, the regulated prediction market platform processed $2.3 billion in contracts, nearly double Polymarket’s $1.2 billion, confirming a clear shift in market leadership.
Kalshi Record-Breaking Week Caps Strong Quarter
Kalshi closed the week ending December 21 with $2.3 billion in trading volume, setting a new weekly record. This milestone capped a strong quarter in which total platform volume surpassed $23.7 billion, driven by rising participation and broader market access.
A key catalyst behind the surge was Kalshi’s recent integration with the TRON network. By enabling TRX and USDT deposits and withdrawals on TRON, the platform offered traders faster settlement and lower transaction costs. As a result, short-term inflows increased and weekly volumes climbed sharply.
Since September, Kalshi has steadily gained market share, widening the gap with Polymarket as access and liquidity improved.
Sports Markets Drive Trading Activity
Sports contracts continue to dominate Kalshi’s activity, outperforming all other categories by a wide margin. Markets tied to the next Pro Football Champion alone have already generated $65.8 million in volume.
Earlier in the quarter, Kalshi processed more than $1.1 billion in sports trades in a single week, while political markets accounted for only a small share. During the same period, Polymarket reported just $357 million in sports trading, underlining Kalshi’s growing lead.
By September, Kalshi controlled 62% of global prediction market volume, compared to Polymarket’s 37%.
Blockchain Expansion Strengthens Liquidity
Kalshi has further accelerated growth through blockchain integrations. The platform recently introduced tokenized event contracts on Solana, unlocking new liquidity and privacy options for traders.
According to Head of Crypto John Wang, Solana access opens billions in potential liquidity through Kalshi Builder Codes. Alongside integrations with platforms such as Robinhood and Base, these developments continue to reinforce Kalshi’s dominance—particularly in sports and esports markets.
