[Kalshi's Single-Day Notional Trading Volume Surpasses $1.5 Billion for the First Time, Weekly Notional Trading Volume Nears $9 Billion, Setting a New Record] Odaily Planet Daily News: KalshiData posted on the X platform stating that on June 21, Kalshi's single-day notional trading volume surpassed $1.5 billion for the first time, reaching $1.502 billion. Additionally, Kalshi's weekly notional trading volume last week neared $9 billion, setting a new all-time high.