Faced with the task of upgrading the portfolio accounting system at CLS Investment, his family's growing investment advisory firm, Eric Clarke couldn't find a suitable off-the-shelf product. So, like every great entrepreneur, he decided to build it himself. That was 1999. Today, Orion Advisor Services is a fast-growing $25 million technology company that serves as the operational hub for many of the country's leading Registered Investment Advisory firms. Eric shares how he built the firm, how they keep innovating, and the big mistake he made that kept the company mired in slow growth for its first 5 years.