On the day of the U.S. presidential election, prediction platforms Kalshi and Polymarket reached unprecedented rankings on Apple Inc.’s (NASDAQ:AAPL) App Store. What Happened: Kalshi, a federally-regulated betting platform, clinched the number one position in the free app and ‘Finance’ category on Nov. 5, while Polymarket, a cryptocurrency-based platform, rose to the top of the ‘Magazine & Newspapers’ and ‘News’ category on the day, according to app analytics platform Sensor Tower. The growth has been staggering, to say the least, as just 10 days ago, Kalshi was ranked 55 in the free app categ…