Behavioural Finance
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Kelly Criterion – behavioral edge vs analytical and information edge in investing
I’ve always been fascinated by how professional gamblers approach decision making under uncertainty and how these methods can be applied in business. I’m reading a great book at the moment called Fortune’s Formula: The Untold Story of the Scientific Betting System That Beat the Casinos and Wall Street by William Poundstone. I had already been Continue reading
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An Algorithm for Business Success?

It seems that testing is the flavour of the month in business these days. All the presentations I go to talk about A/B split testing and multivariate Taguchi methods. Of course the guiding principle of testing is a good one; but I think it gives some the misguided notion that business is a purely deterministic Continue reading
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Intuitive Bayesian methods for portfolio selection – Part II Bayes and Jeffrey
Bayes’ theorem in its common form describes the way in which one’s beliefs about observing ‘A’ are updated by having observed ‘B’. Bayes’ theorem relates the conditional and marginal probabilities of events A and B, where B has a non-vanishing probability. Each term in Bayes’ theorem has a conventional name: P(A) is the prior probability Continue reading
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Intuitive Bayesian methods for portfolio selection – Part I Background
Introduction Disruptive platform technologies usually have a broad base of application. During early stage development, before there is a developed market, the selection of a particular product is usually a ‘high risk, low data’ decision. There are a large number of unknowns, both the known unknowns and the unknown unknowns; we seek the resolve these Continue reading
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Who said I was rational
Studies in behavioural finance often highlight the ‘irrationality’ of an economic agent in making decisions. This may just boil down to the definition we use for rationality, which may not necessarily in itself be rationally justified. We can start by looking at other uses of the word ‘rational’ in the philosophy of science. The Scottish Continue reading
About Me
An entrepreneurial engineer driven by patient impact. C0-founder and CEO of Owlstone Medical with a company mission to save 100k lives. I also try to support engineers and scientists and their start-up ideas.
Recent Posts
- Kelly Criterion – behavioral edge vs analytical and information edge in investing
- The Wheel of Fortune: Boethius runs a Start-up
- Talk at the Royal Academy of Engineering Awardee Excellence Community Launch
- The difference between today problems and tomorrow problems and why Indiana Jones had the right idea
- Marketing Automation and Selling to Scientists