How Positioning Moves Price

You now have all the pieces. You know what an option is, how its value shifts, what volatility measures, why dealers must hedge, and how all that hedging sums into one sign-aware number — GEX. This final lesson ties them together into the one thing the terminal is really for: understanding how the positioning of all those options quietly shapes where price can go.

Nothing here is a forecast. The aim is to read the terrain — which levels are likely to hold price still, and which are likely to let it run — so the moves you see make sense instead of feeling random.

Two behaviours, one cause

From the gamma lesson, remember the bowl and the dome. Those two shapes produce the only two behaviours we ever need to name.

• Pinning is the bowl. Dealer hedging leans against every move, so price keeps getting nudged back toward a heavy strike. Things go quiet and sticky.
• Acceleration is the dome. Dealer hedging leans with the move, so once price starts rolling it tends to roll faster. Things get fast and loose.

Same dealers, same hedging mechanics — the only thing that flips one into the other is the sign of gamma at the price where we're standing. Pinning and acceleration are not two different forces. They are the same force pointed in opposite directions.

Magnets and accelerants

Once you hold those two behaviours, individual strikes start to take on personalities. It helps to picture them as one of two things.

A magnet is a strike where dealers are heavily long gamma. The hedging around it pulls price back like — well, a magnet. Price drifts up to it and gets sold back down; drifts below and gets bought back up. The strike acts like the bottom of a small bowl carved into the price line. Big magnets are often where price seems to "want" to sit, especially as expiry approaches and there's less and less time for it to wander off.

An accelerant is the opposite: a zone where dealers are short gamma, so their hedging shoves price further in whatever direction it's already going. Think of a patch of ice on a slope. Nothing happens while you stand still on it, but the moment you start sliding, it offers no resistance — it speeds you up. A move that reaches an accelerant zone tends to stretch rather than stall.

The magnet is a bowl — hedging pulls price back into it. The accelerant is a dome — hedging pushes price off it. The flip is the line between.

Read the terrain

Lay positioning over the price axis and it stops being a wall of numbers — it becomes terrain, with shapes price has to travel across.

A magnet is a bowl

At a heavy long-gamma strike, hedging pulls price back like a marble rolling to the bottom of a bowl. Price drifts up and gets sold back, drifts down and gets bought back.

An accelerant is a dome

At a short-gammazone, hedging shoves price further the way it's already going — like ice on a slope, it offers no resistance and speeds the move up.

The flip between

The flipis the line dividing bowl from dome. A level holds while price is on the magnet's side; it breaks once it crosses into the accelerant's.

Why a level holds — or breaks

This is the question every chart-watcher asks: will this level hold? Positioning gives a mechanical way to think about it, with no prediction required.

A level tends to hold when the hedging around it pushes back. Approach a big magnet and the dealers are selling into the rise or buying into the dip — the move runs into a headwind and stalls. The level looks like support or resistance, but underneath it's just long-gamma hedging doing its bowl-shaped job.

A level tends to break when the hedging around it gives way or pushes the same direction. If price grinds through a magnet — often because enough of those options have expired or been traded away that the magnet weakens — and reaches a short-gamma zone beyond it, the headwind turns into a tailwind. What was holding price suddenly speeds it along.

1. 1Price moves up

   Spot rallies into the dealer book.

   ↓→
2. 2Dealer delta shifts

   Short gamma → dealers grow shorter as price rises.

   ↓→
3. 3Dealer must hedge

   To stay neutral they BUY into the rally.

   ↓→
4. 4Flow hits price

   Buying adds fuel — the move accelerates.

↺

Amplifying loop: Each turn pushes price further from where it started. The flow in step 4 feeds back into step 1.

The loop above is the short-gamma, accelerant case: a move prompts a hedge, the hedge pushes price the same way, which prompts more hedging. That self-feeding circle is why breaks through short-gamma zones can feel sudden — the mechanism that was damping moves is now compounding them.

The expiry flavour: OPEX and 0DTE

One more thing changes the picture: when the options expire. Positioning isn't static — it drains and refills on a schedule, and two moments stand out.

OPEX is the regular expiration date when a large batch of options expires together — the monthly one, on the third Friday, is the heavyweight. In the run-up, all that gamma stacked at the big strikes can pin price firmly; the magnets are at their strongest. Then, the moment those options expire, the gamma they carried simply vanishes. The bowl can flatten out overnight, and a market that felt glued in place can suddenly be free to move.

0DTE options — the ones expiring the same day — are the other flavour. Because they're so close to expiry, their gamma is intense but concentrated right around the current price, and it shifts fast through the session. They can create sharp intraday magnets and accelerants that build and dissolve within hours, which is a big part of why modern intraday moves can feel so abrupt.

Putting the whole picture together

Step back and the terminal's purpose comes into focus. Every panel is a different way of looking at one map: where the heavy gamma sits, which side of the flip price is on, and therefore which levels are likely to act as magnets and which as accelerants — right now, and as that shifts through the day.

This is exactly what the Sigils view distils — our name for the structural-level map. Instead of a wall of numbers it marks the key levels directly on the price ladder — the floors, ceilings and the anchor (APEX) strikes where dealer hedging concentrates — so the terrain we've spent six lessons describing is drawn out as something you can read at a glance.

Example snapshot

Everything in this track converges here. A magnet is a strike where hedging pulls price back; an accelerant is a zone where it pushes price on; the flip is the line between the two; and expiry is the clock that reshapes the whole map. The terminal just shows you that map as it moves.

What to carry forward

• Pinning (bowl) and acceleration (dome) are the same hedging force pointed opposite ways.
• A magnet is a long-gamma strike that pulls price back; an accelerant is a short-gamma zone that pushes it on.
• A level holds when hedging leans against the move and breaks when it leans with it.
• OPEX and 0DTE put a clock on positioning — gamma drains and refills, so the terrain changes.
• All of it is context: the shape of the terrain, never a call on direction.

You've gone from "what is an option" to reading the hidden structure underneath the price. That's the whole foundation. Now go watch it move — open the terminal and find the magnets, the accelerants, and the flip on a live market.

You're ready

Now watch it happen in real time.

Every dealer level, every print, and where price reacts — the terminal begins exactly where the lessons end.

Open the terminal →