Management Team

David Brown
Sabrient Founder, Chairman, and Chief Market Strategist

David Brown, former NASA scientist and retired CEO of Telescan, Inc., is the founder of Sabrient. He provides the vision behind Sabrient’s quantitative research and the overall strategic direction of the firm. He designed the ranking algorithm for Sabrient’s portfolio stocks and makes the final qualitative selections for the portfolios.

David has more than 40 years of experience in the investment industry.  He began his career at NASA as a project engineer for the lunar lander and went on to become CEO of two public companies. At Telescan, he designed and developed the stock search program, ProSearch.  (Telescan later acquired Investools, Inc. and Think or Swim, which was subsequently acquired by TD Ameritrade.)  David has taught university-level finance and security analysis courses and has documented his investing expertise in several books, including All About Stock Market Strategies (McGraw-Hill, June 2002). 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 Sabrient in 2014, serving first as its president and now serves as CEO.  He has more than 30 years of experience as a chief executive officer with 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 experience in community service in the areas of public education, economic development, and environmental improvement. Current and past positions include the Dean’s Council, Gevirtz Graduate School of Education at UC Santa Barbara; President of the Paso del Norte Foreign Trade Association (El Paso, Texas); Commissioner for Colleges and Universities for the 21st Century for the State of Texas; Co-Chair of the Educational Summit for El Paso, Texas; Director of the Science & Technology Council for the State of Texas; 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 was named president of Sabrient in May 2016. Before assuming this role, he served as senior vice president and head of Sabrient’s marketing and global sales since 2003. He is heavily involved in the development of Sabrient’s products, strategies, and actionable content, and he works closely with Sabrient’s institutional partners, including traveling extensively around the country supporting their sales efforts for co-branded investment portfolios.

Scott also writes the Sector Detector market letter (available via email delivery and on Sabrient’s blog and other syndication websites). Before joining Sabrient full time in 2003, Scott’s experiences included various engineering, analytical, and managerial positions with Chevron Corp.

He 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

Brent Miller has served Gradient in various senior-level capacities since 2003 and has extensive experience in both fundamental equity research and forensic accounting. As an equity analyst, Brent focused on uncovering earnings quality risks factors that indicated a greater likelihood of share price underperformance for both domestic and international companies. Brent’s work experience also includes building qualitative, quantitative, and software-based equity research products for Gradient’s institutional clients. In his current role, Brent is responsible for overseeing all aspects of Gradient’s research process and managing the analyst, business development, and client relations functions at Gradient.

Brent earned an MBA from Arizona State University’s WP Carey School of Business and holds undergraduate degrees in Economics and Political Science from Arizona State. He is a CFA charterholder.

Nicholas Wesley Yee, CPA
Director of Research - Gradient

Nicholas Yee 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. Nicholas 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..

Nicholas is licensed as a Certified Public Accountant in the state of Arizona. He received a BS and a Master 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 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.