The financial strategist and author discusses key principles for assembling a successful portfolio, concentration risk in the US market today, and why he’s an evangelist for ‘defined-duration’ investing. Today on the podcast we welcome back Cullen Roche. He has a new book out called Your Perfect Portfolio: The Ultimate Guide to Using the World’s Most Powerful Investment Strategies. Cullen is also the founder and chief investment officer of Discipline Funds, and he heads up Orcam Group, a registered investment advisory firm he established in 2012. Cullen started his career as an advisor at Merrill Lynch and worked at an event-driven hedge fund before starting his RIA firm. He received his bachelor’s degree in finance from Georgetown University’s McDonough School of Business. Cullen, welcome back to The Long View.