Mike Castino on Market Makers, Platform Fees, and Building a Boutique ETF Firm

In this episode of the Rainmaker Podcast, Gui Costin sits down with Mike Castino, President of Sound Capital Solutions, for a deep dive into the mechanics of ETF creation, distribution, and the accelerating structural shift reshaping investment management. Mike's career began on the floor of the Chicago Mercantile Exchange, where he spent 12 years as an independent futures trader before transitioning into the investment management industry. His first sales role came at Claymore ETFs — one of ...