The Resolution Clock: Why Time Decay in Prediction Markets Doesn't Work Like You Think

Time Isn't Money Here. Time Is Information.

If you came to prediction markets from options, you probably think of time decay as a smooth downhill slope. Every day that passes, an out-of-the-money contract loses a little value. Theta grinds.

Prediction markets don't work that way. Contracts here don't decay because time is passing — they decay (or explode) because information is arriving. And information doesn't arrive at a constant rate.

This distinction matters more than almost anything else you'll learn about how these markets breathe.

The Two Clocks Running at Once

Every prediction market has two clocks: the calendar clock (time until resolution) and the information clock (rate at which new data hits the market).

A market on "Will the Fed cut rates in December?" sits mostly frozen for weeks, then lurches on every CPI print, every Powell speech, every jobs report. Ninety percent of the price movement happens on maybe six specific days.

A market on "Will it rain in Chicago tomorrow?" barely moves at 10am and moves constantly at 6pm as models update.

An NFL game market at 65¢ with three minutes left is priced very differently from the same 65¢ with a full quarter to play, even if the win probability is identical. Why? Because in three minutes, the information clock is almost done ticking.

Where This Creates Edge

Here's the practical part. Markets systematically misprice contracts during information droughts — the dead zones between catalysts.

Example: a political market resolves in six weeks, but the next real catalyst (a debate, a filing deadline, a court ruling) is three weeks out. During those three quiet weeks, the price will drift, react to noise, and get pushed around by low-conviction flow. That drift is usually not information — it's boredom money.

Good traders learn to map the catalyst calendar for any market they're serious about. Write down every scheduled event between now and resolution. Everything else is noise you can fade or ignore.

Where This Creates Danger

The flip side: contracts that look cheap and "safe" often have a huge chunk of their information clock still ahead.

A 7¢ no contract with two months to run isn't the same trade as a 7¢ no with two days to run. The first one has to survive dozens of potential information events. The second just has to survive the weekend.

Traders new to prediction markets constantly underestimate how much can happen in six weeks. They anchor on the current price like it's a static probability instead of a snapshot of a system that's about to get shaken repeatedly.

The Rule of Thumb

When you're pricing a contract, don't ask *how much time is left*. Ask *how many meaningful information events are left*.

A six-month market with one scheduled catalyst is functionally a one-catalyst market. A one-week market with a Fed decision, a jobs report, and a CPI print is a three-catalyst market. The one-week market has more "time" in the sense that matters.

Practical Applications

Sell rich, buy quiet. Contracts tend to be overpriced immediately before major catalysts (people load up in anticipation) and underpriced during information droughts (people lose interest). If you can stomach the boredom, the drought is where you accumulate.

Respect the cliff. The last 10% of the calendar clock often contains 40% of the information. Don't hold a marginal position into a resolution window just because "there's still time." Time isn't your friend when the information clock accelerates.

Distrust smooth price paths. Real prediction markets move in steps, not slopes. If a contract is drifting evenly toward resolution with no catalysts driving it, that's either a very confident market or a very lazy one. Usually the second.