Management Team

David Brown
Sabrient Founder, Chairman, and Chief Market Strategist

David Brown leads Sabrient’s quantitative research and portfolio selection process, and he led the design of Sabrient’s key ranking algorithms. He began his career as a NASA engineer on the lunar landing project, and later moved into the investment world where he has more than 40 years of experience employing his scientific approach to multifactor modeling. He is the former CEO of two public companies, including Telescan, Inc, a firm he founded and took public, and which is now part of TD Ameritrade. He has written several books on investing, and he serves on the Director's Council at the Kavli Institute for Theoretical Physics at the University of California, Santa Barbara. David holds a BS degree in engineering from the University of Pittsburgh and an MBA in finance from the University of Houston.

Danny Vickers
Chief Executive Officer

Danny Vickers joined the company in 2014 with more than 30 years of experience as a chief executive officer and a background in finance, accounting, economics, and management. The companies he has headed provided information, software, and back-office services to Morgan Stanley, GE Capital, JP Morgan, Capital One, and many regional financial services companies. Danny also has extensive community service experience in public education, economic development, and environmental improvement. Among current and past positions are the Dean’s Council, Gevirtz Graduate School of Education at UC Santa Barbara; director of the Texas-Mexico Border Task Force for the State of Texas; and co-chair of the Paso Del Norte Infrastructure Collaborative that consists of 40 organizations from West Texas, Southern New Mexico, and Juarez, Mexico. Danny holds a BBA degree in accounting and an MS degree in economics from the University of Texas, El Paso.

Scott Martindale

Scott Martindale has been on the firm’s leadership team since 2003, and focuses on company strategy, product development, institutional sales, business development, and client relations for both Sabrient and wholly-owned subsidiary Gradient Analytics. He also writes market commentaries, including the Sector Detector newsletter. He began his career as a structural design engineer with Chevron Corp, where he held various engineering, analyst, and management positions. Scott holds BS and MS degrees in civil engineering from the University of Arizona, and an MBA from California State University-Hayward.

Raymond Chiarello, CPA
Chief Financial Officer and Chief Compliance Officer

Ray Chiarello has more than 25 years in the financial services industry.  He spent 12 years with KPMG, a Big Four accounting firm, performing financial statement audits for a variety of clients, including numerous public companies. After KPMG, Ray served eleven years as CFO for an outsourcing business acquired by GE Capital and later served as both CFO and CEO for an economic development holding company for the Ysleta del Sur Pueblo in El Paso, Texas.  In addition, he has worked for a number of years as a self-employed stock option trader. Ray is a Certified Public Accountant and holds a BS degree in accounting from Virginia Tech.

Brent Miller, CFA
President and Chief Operating Officer, Gradient Analytics (a wholly owned subsidiary of Sabrient)

Brent Miller oversees Gradient’s research process and manages the analyst team, as well as business development and client relations functions. He has served Gradient in various roles since 2003, including building qualitative, quantitative, and software-based equity research products for Gradient’s institutional clients. Brent is a Chartered Financial Analyst charterholder and earned undergraduate degrees in economics and political science and an MBA from Arizona State University’s WP Carey School of Business.

Nicholas Wesley Yee, CPA
Director of Research - Gradient

Nick has over 10 years of experience working within the mutual and hedge fund industries. At Gradient, he focuses primarily on the technology, financial and industrials sectors with an emphasis on earnings quality issues. Nick has done significant work and is an expert with respect to tax profit shifting and international tax law. He has published numerous highly regarded Gradient Issue Commentaries about publicly traded companies and their strategies to shift profits overseas. Nick is licensed as a Certified Public Accountant in the state of Arizona. He received a BS degree and a master's of accounting with a tax designation from the WP Carey School of Business.

Jeffrey Brown
Director of Quantitative Research

Jeff Brown manages quantitative research for Sabrient and Gradient Analytics. He has extensive experience as an IT manager in several industries and multiple countries. Over the past 20 years he has served as project manager either on staff or as an independent contractor for, among others, Dell, Deloitte Consulting, IDEAglobal, AMD, Administaff, National Western Life Insurance, the US Department of State, and the US Department of Defense. Jeff holds a BS degree in computer science from Texas A&M University and an MBA from the University of Houston.

Rick Hoselton
Director of Information Technology

Rick Hoselton is in charge of Sabrient's IT operations. He has 40 years of experience in information technology, both as a software developer and software development manager. He began working with computers in 1968 as a student at Creighton University, in Omaha Nebraska. He was with Telescan, Inc. for 14 years, nine of which were spent managing Telescan’s Host Development Group. Most recently, Rick spent five years as a consultant and software developer for the Citadel Investment Group in Chicago.

Kassandra Bentley
Director of Corporate Communications

Sandra Bentley is in charge of corporate communications. She is also one of Sabrient's founders. Her background spans more than thirty years in advertising, investor relations, and corporate communications. She is a coauthor, with David Brown, of four books on investing, including All About Stock Market Strategies (McGraw-Hill, June 2002). In 1997 she founded, which was named as one of the Web's top financial portals by Forbes and Fortune magazines. Sandra graduated summa cum laude with a BA degree in English from the University of Houston.