The Betfair exchange, Inefficient efficiency

One of the questions that people often ask me is whether the markets are easier to trade than they were 10 or 20 years ago? Are the markets following efficient market theory on the Betfair exchange, so are they more efficient now? Eugene Fama was ‘famous’ for the efficient market hypothesis, though his work was mainly aimed at…

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Most and least volatile racecourses to trade

I did a tweet recently that stated a little trading fact, that Chelmsford City was the most volatile course. I had a fairly immediate retort, that stated it wasn’t a fact but was ‘just’ an opinion. It was actually a carefully researched fact.

Volatility

I’ve collected data on volatility right from day one of my trading journey and have built up a massive database of data. One of the things I study is how volatile the market is.

I measure …