What happens at the end of a game/event?

At the end of the game/event the market will close. All open orders will be cancelled and all shares that you own will be valued. For shares you own of the winning outcome you will be credited $100 in virtual currency towards your P&L. For shares of the losing team you will be credited $0. This will be added to your final P&L to be used for that game's leaderboard and potentially for the contest leaderboard if it is high enough.