Journal
Mapping put walls without turning them into prophecy
Strike clusters with heavy put open interest matter for context — they are not automatic magnets for the cash price.
Traders talk about put walls as if the cash price were obliged to bounce there. Sometimes dealers’ hedging flows can slow a move near a heavily owned strike. Sometimes the wall is simply where insurance was bought last month and nobody refreshed it.
Context that belongs on the page
When we mark a put wall in a briefing, we pair it with:
- how old the open interest is
- whether recent prints added to or reduced that strike
- what the equity did the last two times price traded nearby
Without those notes, a wall becomes folklore. With them, it becomes one constraint among several — useful when sizing a long into weakness, dangerous when treated as a guarantee.
Where this shows up in sessions
Expiry Week Watch notes flag walls that are still growing. Single-name Options Flow Briefings spend more time on whether a wall coincides with a cash support the trader already respects. Either way, the write-up should leave room for the wall to fail.