Prediction markets price 74% odds Fed holds rates steady in September
Prediction markets across Polymarket, Kalshi, and Myriad are pricing a 74% probability that the Federal Reserve will hold interest rates steady at its September meeting. The cross-platform consensus reflects broad trader alignment that no policy shift is imminent. The figure marks a notable convergence from a 70% print on Kalshi five days ago and a two-point spread between venues one week prior, which had drawn arbitrage-seeking macro traders.
The 74% consensus erases the pricing edge that drew macro arbitrageurs when Kalshi and Polymarket diverged by two points last week. Traders running prediction markets against CME futures now face a uniform signal rather than a venue mismatch to exploit, forcing them to hunt mispricing elsewhere or commit directional risk.
The speed of convergence matters for platform credibility: whichever venue moved first can claim superior liquidity absorption to institutional hedgers, while the laggard loses a key competitive pitch. Polymarket nor Kalshi publishes timestamped trade data or order depth, so traders cannot verify who led the repricing. That opacity means the convergence is a narrative battle as much as a pricing event, with the winner shaping how Wall Street tests prediction markets on the next macro contract.
The Paramount-Skydance contract and Fed rate markets both test whether prediction platforms can move beyond speculation into hedging tools that traditional finance actually uses.