Guru Grades Project Milestones

December 31, 2013 • Posted in Individual Gurus, Investing Expertise

As of the end of 2012, we stopped adding forecasts to the Guru Grades database and published a preliminary report on findings. As of the end of 2013, we have completed the grading of all forecasts added during 2012 and now publish a final Guru Grades report.

The final report encompasses 6,582 graded forecasts from 68 gurus, adding 123 forecasts to the preliminary study (an increment of about 2%). The final report also incorporates a few minor corrections. The relatively small number of additional grades and corrections do not materially affect preliminary findings. Specifically:

  • Terminal forecast accuracy is still 46.9%.
  • Averaged by guru rather than across all forecasts, terminal accuracy is still 47.4%.

Accuracy rates change for individual gurus involved in the 123 incremental forecasts. We have updated the detailed forecast grading for these individuals. The histogram of guru accuracies in the final report is somewhat more symmetric than that in the preliminary report.

The final Guru Grades report will remain available indefinitely as a caution to investors on: (1) the (un)predictability of complex systems such as financial markets; and, (2) the risk or relying on grades self-assigned by students of financial markets.

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