What does cash out mean?

Selling your position back to the market before it resolves, locking in today's value instead of waiting.

Backed YES at 30% and the market's now at 70%? You don't have to sweat the finish. Cash out sells your shares back at the current odds, and the profit is yours whatever happens after. The price: you give up the extra you'd win if it does resolve your way.

On Foresee the cash-out button quotes exactly what you'll get, the current value of your shares minus the small price impact of the sale itself (selling pushes the odds back against your side, the mirror of buying). Cash out early when you think the market has overshot; hold when you think it hasn't gone far enough.