I did a bit for fun and felt there were areas where I did do well. However, the problems with these markets is the contracts are often such where you can win or lose on obscure technicalities. I bet on 5 things, and 4 were resolved in ways I felt were non obvious.

For example, will the Ayatollah be out by April. Lost because death apparently did not count. Bet Anthropic would advertise at the superbowl. Lost because while they did so they advertised Claude not for the company.

Once it became clear that it was an exercise in legalese, I was done.