Rat-powered Hedge Funds? A Frightening Concept

///Rat-powered Hedge Funds? A Frightening Concept

Rat-powered Hedge Funds? A Frightening Concept

By | 2017-08-18T16:58:07+00:00 September 24th, 2014|Uncategorized|3 Comments

A professor buddy sent a link to an outstanding article that mentions a study where researchers study the performance of a rat’s ability to learn how to “beat the market:”

Marcovici says the rats “outperformed some of the world’s leading human fund managers.” The rats were trained to press a red or green button to give buy or sell signals, after listening to ticker tape movements represented as sounds. If they called the market right they were fed, if they called it wrong they got a small electric shock. Male and female rats performed equally well. The second generation of rattraders, cross-bred from the best performers in the first generation, appeared to have even better performance, although this is a preliminary result, according to the text. Marcovici’s plan, he writes, is to breed enough of them to set up a hedge fund.

Here is a picture depicting the study:


A few key takeaways from the research:

  1. Some rats outperform the greatest hedge fund managers in the world.
  2. Male and female rats perform equally well.
  3. Rats, sired by rats with great performance, tend to perform better than “normal” rats in the population.

The researchers end-state is to breed a crew of genius rats and start a hedge fund so he can charge 2/20.

I can’t help but think this study is 100% in jest, but as far as I can tell, the research is fairly serious…even though the outcome and methodology are hilarious/frightening

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About the Author:

After serving as a Captain in the United States Marine Corps, Dr. Gray earned a PhD, and worked as a finance professor at Drexel University. Dr. Gray’s interest in bridging the research gap between academia and industry led him to found Alpha Architect, an asset management that delivers affordable active exposures for tax-sensitive investors. Dr. Gray has published four books and a number of academic articles. Wes is a regular contributor to multiple industry outlets, to include the following: Wall Street Journal, Forbes, ETF.com, and the CFA Institute. Dr. Gray earned an MBA and a PhD in finance from the University of Chicago and graduated magna cum laude with a BS from The Wharton School of the University of Pennsylvania.


  1. Chris Scott
    Chris Scott September 24, 2014 at 9:38 am

    You missed a key takeaway – Hedge fund traders should receive an electric shock when they make a bad trade to motivate better performance…

  2. hari September 26, 2014 at 5:25 am

    This is a hilarious idea, brilliant, but a bit silly if there is any truth to it. First, it’s not very nice for the poor rats. More to the point, the scientist needs to select an “algorithm” for breeding the rats and for training them. This is very inefficient, if you compare it with a straight forward genetic algorithm. The GA can learn much more quickly, rigorously and cheaply than a population of rats!

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