David Keller
David Keller is the President and Chief Strategist of Sierra Alpha Research, a boutique investment research firm focused on risk management, market awareness, and disciplined decision-making. He is also the Creator and Host of Market Misbehavior, a widely followed blog and multimedia platform that examines the intersection of behavioral psychology and financial markets. Through written analysis, video commentary, and expert interviews, he explores how cognitive biases influence investor behavior and how technical analysis can provide objective frameworks for better market decisions. Previously, Keller served as Chief Market Strategist at StockCharts, the leading online technical analysis and financial charting platform for retail investors. In that role, he helped educate investors on using technical analysis to counter emotional decision-making and improve timing, risk control, and portfolio discipline. He was also a CNBC contributor, providing market commentary and technical insights to a broad audience. Earlier in his career, Keller was a Managing Director of Research at Fidelity Investments in Boston and a Technical Analysis Specialist at Bloomberg in New York, giving him deep experience across institutional research, market data, and investor education. He is a past President of the Chartered Market Technician (CMT) Association and has served as a subject matter expert in Behavioral Finance.
David Keller Professional Experience / Academic History
Professional Experience
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President and Chief Strategist
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Chief Market Strategist and Senior Technical Analyst
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Managing Director of Research
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Adjunct Professor
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Technical Analysis Application Specialist
Academic History
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B.A., B.S., Music and Psychology
FIDELITY INVESTMENTS
David Keller built a distinguished early career at Fidelity Investments, where he served as Managing Director of Research and led the largest buy-side technical analysis team in the industry.
In this role, he advised portfolio managers overseeing approximately $1.8 trillion in assets, helping integrate technical analysis into large-scale portfolio decision-making and risk management.
He also managed Fidelity’s Technical Research Department and the renowned Fidelity Chart Room, a core resource for institutional market analysis.
In addition, Keller co-managed Fidelity’s Business Associate Program, a competitive rotational program designed to develop emerging investment professionals.
EARLY CAREER
Beyond institutional research, Keller has played a significant role in financial education and academia.
He has lectured extensively on technical analysis and behavioral finance as an Adjunct Professor at Brandeis University’s International Business School, where he helped bridge academic theory with real-world market application.
Keller is a Past President of the Chartered Market Technician (CMT) Association and has served as a Subject Matter Expert in Behavioral Finance.
Prior to Fidelity, Keller worked at Bloomberg LP in New York as a Technical Analysis Application Specialist, where he trained institutional clients on advanced market analytics and data-driven investment tools.
He was also a regular Contributor to Bloomberg Markets magazine, sharing insights on market trends and technical indicators with a global professional audience.
MEDIA PRESENCE & SPEAKING ENGAGEMENTS
Keller is a frequent host on StockCharts TV, where he delivers market commentary and technical analysis insights for active investors.
Through his blog, The Mindful Investor, he connects mindfulness practices with disciplined investment decision-making, offering a unique perspective on emotional control and behavioral awareness in markets.
In addition, Keller is a regular guest on financial podcasts, conferences, and live events, where he speaks on market psychology, technical analysis, risk management, and investor behavior, helping audiences develop clearer frameworks for navigating volatile markets.