Kalshi Crosses $4 Billion in Weekly Trading Volume for First Time

Kalshi crossed $4 billion in weekly notional volume during the week ending May 18, 2026, up from $54.5 million in the same period one year prior. The prediction market platform's weekly volume grew approximately 7,424% year-over-year, marking the first time the company surpassed the $4 billion weekly threshold.

Kalshi trading volume milestone

• ▪Kalshi's weekly notional volume grew approximately 7,424% year-over-year as of May 18, 2026
• ▪Kalshi's weekly notional volume stood at $54.5 million one year before May 18, 2026
• ▪Kalshi crossed $4 billion in weekly notional volume during the week ending May 18, 2026