The Only Thing That Matters: Episode 12: David Kalt of OptionsXpress + Reverb.com

There's the killer idea. The dynamic team. The seed round. Great founders today -- the ones who create high-growth, scalable businesses -- understand that these and other elements are indispensable in transforming a startup into today’s unicorn company.

But before any of that has an impact, there is one thing that every successful business must find: perfect product-market fit.

In "The Only Thing That Matters: Getting Your Startup to Product-Market Fit," we sit down with hall of fame-level entrepreneurs who discussing the insights that allowed them to achieve product-market fit.

In Episode 12, host Pat Ryan talks with serial finance and music entrepreneur David Kalt, who founded OptionsXpress (sold to Charles Schwab for $1B) and online instrument marketplace Reverb.com.