[Polymarket Experiences Temporary Decline in Trading Activity After v2 Upgrade, Significant Drop in Transaction Count and Volume] BlockBeats News, May 27: On April 28, Polymarket announced the official launch of its upgraded CLOB v2 trading platform. However, according to Dune data, on the day of the platform upgrade, Polymarket saw a noticeable decline in both transaction count (Txn) and trading volume (Volume). Specifically, the daily number of executed orders quickly fell from previous highs, and monthly trading volume also significantly decreased after peaking in early 2026. That said, data on active wallets indicates that the platform's overall user activity remains at a relatively high level. The market believes this decline is more related to the system upgrade, API transition, and short-term adjustments in market-making liquidity. Meanwhile, its competitor Kalshi has continued to expand during the same period, with trading volume stabilizing and showing an upward trend, while transaction count has steadily increased. Driven by U.S. political, macroeconomic, and sports betting-related events, Kalshi has recently experienced sustained growth in trading volume and user base. Leveraging its compliance advantages, it continues to attract U.S.-based retail users and institutional capital.