The last two position types in a typical on-chain portfolio, and the two that people forget they even hold. Which is exactly what makes them worth monitoring.

Prediction markets

On a prediction market like Polymarket, you buy shares of an event. A share trades between 0 and 1 dollar and pays exactly 1 dollar if the event happens, 0 if it does not. A share at $0.30 therefore means "the market gives this event a 30% chance".

You can sell your share before resolution, and that is where it becomes an asset worth watching: its price moves with the news. A position you bought at 30 cents can quietly become worth 70, or 5, while you are not looking. Odds moving sharply, a market resolving, an order filling: those are the events that matter, and none of them ring on their own.

NFTs

A unique token, from chapter 2. What matters for monitoring is not the price, it is the calendar: airdrop eligibility, registration deadlines, licensing windows. An NFT cannot be liquidated, but its holder can miss a date and lose a right that was attached to it.

The pattern, one more time

A missed deadline is not a market risk, it is an appointment risk. It is the same family as the Pendle claim deadline and the 3Jane capital call: 100% avoidable losses, cured by a calendar and a notification rather than by any trading skill.

Check yourself:Your Polymarket share is at $0.92 with resolution in three weeks. What is the case for selling now versus holding?(tap to reveal)

At $0.92 the market says 92% likely. Holding to resolution earns the last 8 cents if you are right, and loses 92 if the 8% tail hits. Selling now locks nearly the whole payout and removes the tail risk. The math favors holding only if you believe the true probability is meaningfully above 92%, which is a strong claim. Either way, the position deserves an alert on sharp odds moves, because 92 can become 60 on one headline.