世界杯热潮消退，Kalshi和Polymarket未平仓合约下降20%
Kalshi, Polymarket open interest falls 20% as World Cup frenzy winds down
Sports accounted for 80% of both Kalshi and Polymarket's total volumes throughout the weekslong World Cup tournament.
更进一步：量化金融体系
看懂新闻只是起点——沿量化金融路径，把它变成能交付的工程能力