Tag: efficient market hypothesis

Investment lessons from Ed Thorp

Here I summarise the financial market lessons imparted by Ed Thorp in his book “A man for all markets”. My first three sections cover his views on investing, risk and market inefficiencies. My last two sections describe the hedge fund strategies Dr Thorp employed as well as his views on hedge funds in general.

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Grossman-Stiglitz paradox: Arbitrageurs outperform an efficient market

Consider a securities market where price-sensitive information is available only to participants who pay a fixed cost in money or effort. So only paid-up agents know the fair prices of securities. However, not all agents would be willing to pay for information. Some would argue that because there are enough informed market participants, ensuring that securities are correctly priced, why then incur the “unnecessary” cost of gathering information?

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