One guy actually leverage on this knowledge from the toilets of equity trader and made some good money for himself:
It so happened that at the height of the financial crisis, the restroom nearby the private equity guys at a top firm was shockingly clean. The private equity guys just weren’t working. They weren’t taking clients out to dinner at night. Sometimes they did not come into the office at all. The toilet was “pristine,” according to our source
But in February of last year, the situation changed. The restroom got gross again. The facilities became stained from overuse.
So what did our source do? He decided to to accelerate his investments in the market.
The condition of the restroom “made me think the private equity guys were starting to work again,” he said. Of course, this was shortly before the rally of 2009 got started.