In my new job I deal a lot with the stock market. Here is one fun fact I learned at work:
Sazae-san is a better indicator of Japanese stock performance than the US
Sazae-san (episodic story of a quirky but happy Japanese family, sort of like the Simpsons but more like Leave it to Beaver in the execution) has been the top-rated animated TV show in Japan for almost 40 years. A Daiwa Institute of Research study showed that there is a 0.86 correlation coefficient between Sazae-san viewership and TOPIX movements. This is even higher than the correlation between TOPIX and the NYSE composite index, even though the US markets are supposed to be one of the main drivers of Tokyo trading.
The explanation for this phenomenon is that people tend to go out on Sundays when the stock market is booming and people have money to spend and stay home to watch Sazae-san when it’s slumping and everyone is broke.
Now, just because there is a correlation, that doesn’t mean that you should break into Video Research (the Japanese ratings house) on Sunday night to plan your Monday morning trades. At any rate, if you want to read this theory in detail it is available in paperback.