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Kalshi Turns Two

This was a big week for Kalshi, with Monday’s CFTC hearing and the exchange’s second anniversary. Like other prediction markets, Kalshi traders buy and sell binary option contracts: an event either happens or does not happen (Yes or No).  A correct prediction receives $1/share, and a wrong prediction receives $0/share.  The share prices can indicate […]

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Manifold by the Numbers

Manifold Markets describes itself as “a play-money prediction market platform where you can bet on anything.”  There probably isn’t a better way to describe it.  A unique combination of PredictIt (simple user interface), Hypermind (play-money), and Metaculus (create your own markets), Manifold gamifies forecasting for a wide variety of interests and subcultures. The play-money is

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Markets on Insight Prediction

With four weeks left until PredictIt’s scheduled execution by the CFTC on February 15th, we’re taking a look at the markets offered by one of its competitors, Insight Prediction. Excluding sports, as of January 19th there are 36 markets in five categories: Category Markets Current Events 10 Economics 4 Russia/Ukraine 6 US Politics 14 World

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Did Yahoo Fantasy Football projections outperform the naïve forecast in 2021?

Anyone who plays in a Yahoo Fantasy Football league understands the frustration of relying on Yahoo’s fantasy forecasts.  The projected stats always seem to be wrong.  To quantify exactly how bad Yahoo is at projecting future performance, we’re going to compare Yahoo’s projected 2021 quarterback statistics to the naïve forecast of 2020 statistics.  Our hypothesis

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