Traders predict U.S. government shutdown could last nearly two weeks, with odds rising for deal by mid-October. Forecast on prediction markets like Kalshi and Polymarket show varying probabilities, highest likelihood for reopening after Oct. 15. Shutdown began after failed deal, could impact economy and stock market if prolonged.

Length of government closure crucial, could strain economy and stock market near record highs. Shutdowns typically last 14 days, but current situation could have more impact. S&P 500 historically sees 1% increase during shutdowns, but prolonged closure may unsettle markets.

Read more at CNBC: Prediction markets see government shutdown lasting nearly two weeks