Management Team

David Brown
Chairman, Sabrient Founder, and Chief Market Strategist

Sabrient's research team is headed by David Brown, former NASA scientist and retired CEO of Telescan, Inc. David provides the vision behind our quantitative research and the overall strategic direction of the firm. 

A lifelong investor, David designed and developed the critically acclaimed stock search program, ProSearch, and the market timing indicator, Brown Breakout Ratio. He has documented his investing expertise in four books on investing, including All About Stock Market Strategies (McGraw-Hill, June 2002) and Cyber-Investing: Cracking Wall Street with your Personal Computer (John Wiley & Sons, 1994, 1997).

David has taught university-level finance and security analysis courses and was named Stock Traders Almanac's Man of the Year for 1988 for "[showing] the average investor how to spot the stocks that the hottest money managers are buying." He serves on the Director's Council at the Kavli Institute for Theoretical Physics at the University of California (Santa Barbara).

David holds an MBA in finance from the University of Houston and a BS degree in engineering from the University of Pittsburgh. He is a member of the Author's Guild.

Danny Vickers
Chief Executive Officer and President

Danny Vickers  brings to Sabrient more than 30 years of experience as a chief executive officer with a background in finance, accounting (including a CPA), economics, and management. The companies he 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 has been 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 an MS degree in economics and a BBA in accounting from the University of Texas (El Paso).

Vinh Tran, PhD
Vice Chairman and Deputy Chief Market Strategist

Vinh Tran has been an institutional money manager and adviser to High Net Worth investors for thirty years with global financial institutions, including Morgan Stanley and Bank of America. A published author, he has taught as adjunct professor at NYU’s Stern School of Business, Center for Global Affairs, and Schack Institute of Real Estate; and lectured at Harvard, Wharton and other institutions. Prior to joining Sabrient, he was managing partner of Pinehill Capital LLC, an investment and advisory firm in Greenwich, CT. Previously, he was Senior Vice President of Global Wealth Management and Director of Alternative Investments at Bank of America; Head of Global Fixed Group at Morgan Stanley; and Director of International Investments at Aetna Life & Casualty. His areas of expertise include managing global investments, L/S equity hedge funds and alternative investments. His performances earned high acclaim from Fortune, New York Times, and other publications, He has extensive experience in developing and applying quantitative algorithms for security selection, asset allocations, portfolio construction, downside risk assessment and control, and hedge fund evaluation and ranking.

Vinh is the author of several investment books, including Market Upside Down: How to Invest Profitably in a Shrinking Economy (NY: FT Press/Wharton School Publishing, 2010) and Evaluating Hedge Fund Performance (John Wiley & Sons, 2006). He has PhD and MBA degrees in finance from The George Washington University, and graduated magna cum laude with BA degrees in business administration and political science from the University of Dalat, Vietnam.

Raymond Chiarello, CPA
Chief Financial Officer and Chief Compliance Officer

Ray Chiarello is a Texas CPA who began his career with the Big Four accounting firm KPMG, where he spent 12 years performing financial statement audits for a variety of clients, including numerous public companies. Following his stay with KPMG, Ray served eleven years as CFO for an outsourcing business acquired by GE Capital and he then 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 to these financial management roles, Ray has worked for a number of years as a self-employed stock option trader.

Ray has a BS degree in accounting from Virginia Tech.

Scott Martindale
Senior Vice President

Scott Martindale focuses on institutional sales, marketing, business development, client relations, and product development, including models for ETFs, UITs, and structured products, quantitative portfolio strategies for hedge funds, and actionable content for discount brokers. He also handles direct sales for a large global region on behalf of subsidiary Gradient Analytics’ forensic accounting research.

Scott writes the weekly Sector Detector market letter for Sabrient’s blog and other syndication sites, and he is an experienced trader of stocks, options, and ETFs. His prior experience includes operations management, strategic planning, engineering design, and consulting, including various technical, analytical, and managerial positions with Chevron Corp.

Scott holds an MBA from California State University-Hayward and MS and BS degrees in civil engineering from the University of Arizona.

Nick Gibbons, CFE

Director of Research - Gradient

Nick Gibbons, a Certified Fraud Examiner, has been with Gradient since 2004. He has focused on developing Gradient’s methodologies for detecting and assessing earnings quality related risks exhibited by domestic and international companies, and he was the primary architect of the Earnings Quality Rank (EQR) model.

Nick received his undergraduate degree in Finance from the W.P. Carey School of Business and is a graduate of Barrett, The Honors College at Arizona State University. Nick is an Adjunct Professor of Finance and Accounting at Thunderbird School of Global Management where he teaches financial statement analysis.

Jeffrey Brown
Senior Technical Product Manager

Jeff Brown manages the technical product development for Sabrient and Gradient Analytics. He has extensive experience as an IT project 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 an MBA from the University of Houston and a BS degree in computer science from Texas A&M University.>

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, while 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 twenty 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.