Referencing this group, which houses markets relating to the secondary private equity market. It is a niche area in finance and I don't expect traders without specific knowledge regarding secondaries to be able to earn reliable profit.

I've tried encouraging colleagues of mine to make predictions on Manifold with limited success thus far, but I view it as a long game. Private market predictions seem incredibly useful given the opacity inherent in non-public companies. A well-traded and liquid group like this would be a powerful tool for the industry.