Points of Differentiation To perform due diligence while selecting a financial advisor, use this checklist as a reference. The ADV Part 2A, Firm BrochureWe also recommend that you review a firm's ADV Part 2A, Firm Brochure, which can be found on the SEC's website. The ADV Part 2A, Firm Brochure will help you understand an investment firm's revenue structure. Some financial advisory firm’s main revenue source is actually not from advisory services, but from the sale of proprietary products, commissions, kick-backs from product companies, 12B-1 fees and/or soft dollar arrangements. The revenue structure may impose a conflict of interest when the firm manages your portfolio. Use the following link to review Zhang Financial's ADV Part 2A, Firm Brochure.