Kalshi saw a sharp acceleration in its trading activity last week, propelling its weekly volume to a new record. According to available data, the predictive market processed more than $2 billion in transactions over the period, putting it significantly ahead of Polymarket. This dynamic was driven by sustained demand for sports contracts, as well as expanded access to blockchain infrastructure.
In brief
- Kalshi recorded weekly volume of $2.3 billion, almost double that of Polymarket, crossing the $2 billion threshold for the first time.
- The TRON network's support for TRX and USDT deposits has expanded access to the platform and boosted short-term trading activity.
- Sports markets dominated activity, with contracts related to the Professional Football Championship exceeding $65.8 million in volume traded.
- September data indicates that Kalshi now captures 62% of global prediction markets volume, following its expansion into Solana, Base and Robinhood.
TRON Integration Drives Increase in Trading Activity
The platform recorded $2.3 billion in trading volume for the week ending December 21, according to Artemis. This figure is almost double the $1.2 billion processed by Polymarket over the same period and marks Kalshi's first weekly close above $2 billion. At the same time, activity progressed several market categories.
One of the main drivers of this increase is the recent integration of Kalshi into the TRON network. Support for TRX and USDT deposits and withdrawals via TRON has expanded access to traders looking for faster and cheaper transactions. As is often the case, the addition of new payment options encouraged increased trading flows in the short term.
Over the last quarter, Kalshi's performance reflects several major developments in the platform:
- Weekly trading volume surpassed a new record above $2 billion.
- The TRON integration added support for transactions in TRX and USDT.
- Sports contracts concentrated the majority of activity.
- The cumulative volume of the platform has crossed 23.7 billion dollars.
- Kalshi's market share has continued to increase against Polymarket since September.
Sports trading strengthens Kalshi's dominance against Polymarket
Sports markets remain, by far, the platform's main category of activity. Contracts related to the next Pro Football Champion alone exceeded $65.8 million in traded volume at press time. Previous data also shows that Kalshi processed more than $1.1 billion in sports-related transactions in a single week, between October 20 and 27, while political markets showed much more limited activity.
Over this same period, Polymarket recorded $357 million in sports trading, confirming Kalshi's advantage in this segment. If predictive markets had attracted massive interest during the US presidential election cycle last year, a period during which Polymarket dominated volumes, the balance began to shift in September with the rise of Kalshi.
Blockchain expansions have also played a key role in this growth. Earlier this month, Kalshi launched tokenized event contracts on Solana, providing traders with direct access to crypto liquidity as well as enhanced privacy options. John Wang, head of crypto at Kalshi, said the integration with Solana opens up access to several billion dollars of liquidity through development tools called Kalshi Builder Codes.
September data finally indicates that Kalshi now accounts for 62% of global predictive market activity, compared to 37% for Polymarket. Expansion to platforms like Robinhood, Solana, and Base has supported the growth of sports and esports-related markets. Recent figures demonstrate sustained user participation, as predictive markets continue to expand to an ever-wider audience.
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