Ridgeline, the AI-native investment management platform, announced it has raised $250 million in a Series E round led by Founder and Chairman Dave Duffield. The invitation-only round valued Ridgeline at $1.425 billion and drew significant participation from Ridgeline customers and affiliates, including Motley Fool Ventures, associates of Smead Capital Management, and Patrick O'Shaughnessy, CEO of Positive Sum and host of the Invest Like the Best podcast.