Pinnacle Entertainment plans to acquire Ameristar Casinos for $869 million. “The acquisition of Ameristar is a transformative transaction for Pinnacle that will provide us the scale and diversification to more effectively compete. The acquisition will more than double the reach of the Las Vegas-based regional casino operator, adding Ameristar’s casino resorts in Colorado, Missouri, Indiana, Iowa, Mississippi and Nevada to its portfolio in Louisiana, Missouri, Indiana and Ohio. Read the Las Vegas Review-Journal story here.