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Topic cluster / Hyperliquid HIP-4 marketsNear expiry, time disappears, one new piece of information has less room to wash out, and urgency rises on both sides of the book. That makes the same headline or order flow reprice a HIP-4 market much more violently than it would earlier in the contract lifecycle.
What to remember
A dated outcome market gets more sensitive as resolution approaches because there is less time for uncertainty to mean-revert. The market is no longer pricing a distant possibility. It is pricing a soon-to-be-resolved question.
That means price can move quickly even when the underlying information does not look dramatic on the surface. Near expiry, small changes in interpretation can matter a lot.
Earlier in the contract, traders can still imagine many paths from here to settlement. Near expiry, many of those paths disappear. The same move in the underlying or the same headline can suddenly feel decisive because there is less time left for the market to be wrong and then recover.
Near expiry, depth can get patchier and makers become more selective about where they want to quote. That means a modest market order or one-sided urgency can move the displayed odds more than people expect.
If you want to study these moves honestly, store time-to-expiry, spread, depth, and the exact contract terms next to the price path. Otherwise you will confuse a generic volatility story with a resolution-timing story.