Greg Fisher

Greg FisherGreg FisherGreg Fisher
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Greg Fisher

Greg FisherGreg FisherGreg Fisher
  • Home
  • About
  • Complexity in Finance
  • Reflections and Ideas
  • Contact

Greg Fisher PhD, CFA

Greg Fisher PhD, CFAGreg Fisher PhD, CFAGreg Fisher PhD, CFA

Applying Complexity Science

to Asset Management and Beyond

Explore My Approach

Connecting finance with complexity science, I work where theory meets market reality. My experience spans the Bank of England; a macro hedge fund; and traditional asset management, all underpinned by a PhD in Complexity Economics. I help investors see patterns in uncertainty, challenge conventional approaches, and focus on what drives lasting value. Author of Complexity Arbitrage and seven foundational papers.

Rethinking Markets Through Complexity

Markets are not machines — they are evolving, adaptive systems shaped by uncertainty, feedback, and shifting narratives. Here, I explore how complexity science can reveal these patterns, offering fresh perspectives on interpreting change, managing risk, and creating lasting value.

Complexity in Finance

Complexity in Finance

Complexity in Finance

How complexity science can reshape investment thinking. Explore research, case studies, and concepts such as non-ergodicity, systemic risk, price emergence, and adaptive strategy.

Explore the Work

Reflections and Ideas

Complexity in Finance

Complexity in Finance

Exploratory posts, draft essays, and reflections on complexity, uncertainty, and systemic resilience. See how these themes connect across markets, organisations, and wider systems.

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About Greg

Complexity in Finance

About Greg

My background, influences, and career journey. Learn how I combine experience in economics, markets, and asset management with a PhD in complexity science.

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“Greg brings deep experience in finance and a sophisticated grasp of complexity thinking. His work applies complexity not as metaphor but as method — offering insight into how uncertainty and emergence shape markets and investment practice. He is a rare bridge between theory and the real world."


Jean Boulton, Author of "The Dao of Complexity"

Book cover of The Dao of Complexity by Jean Boulton, with child walking along a shoreline
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