Three ways of collapsing the full per-strike gamma exposure curve down to one or two price levels, each drawn directly on the price chart:

Large dealer gamma concentrations are commonly read as dynamic support/resistance: near a heavy positive-gamma (call-side) wall, dealers are theorized to sell into rallies and buy into dips to stay hedged — a dampening, pinning effect. Near a heavy negative-gamma (put-side) wall, the hedging flow runs the other way — buying into a rally, selling into a decline — which can accelerate a move once that level breaks rather than cushion it.

The magnitude centroid gives one "center of gravity" reading regardless of side; the signed centroid gives one directional lean. Running dual-wall alongside either single-line mode lets you see whether the single number is actually sitting between two real, separated walls, or whether one side has effectively vanished for the session.

Each of six raw components is independently rolling z-score normalized (over a configurable lookback) and squashed into [−1, +1], then combined into one weighted-average composite score, bounded to exactly [−1, +1] by construction. The composite is drawn as two lines — HP+ (the clamped positive part) and HP− (the clamped negative part) — so they visibly meet at zero on every crossing instead of leaving a gap. A third line, HP Momentum, tracks the composite's own slope (in composite-units/minute) over an adjustable window, on its own auto-ranged axis.

The six inputs: GEX and DEX (net gamma and delta exposure), Vanna and Charm (State tier), a computed Gamma Flip level (spot's signed distance from the flip), and Risk Reversal (Classic tier's delta_risk_reversal, used as the closest available proxy for implied volatility — GEXbot's API has no direct IV field).

Six lines total. Three on the price chart itself (PRIMARY): the computed Gamma Flip level, the nearest GEX+ Wall, and the nearest GEX- Wall. Three in the bottom pane, identical in construction to the standalone Oscillator: HP+ / HP− / HP Momentum. No zone-painting or heatmap modes — this project deliberately dropped those in favor of making the three price-chart lines the focal point.

Eleven lines, each frozen to one snapshot per calendar day (that day's closing record, not continuously recalculated) so they read as clean static reference levels rather than a jittery stream:

The same style of structural framework other GEX tools show: Call Resistance / Put Support / HVL are meant to describe the next session's likely range based on options positioning as of the prior close, and GEX 1–5 flag additional secondary strikes worth watching as minor support/resistance beyond the two main walls.

One step-line, one of exactly three values, from GEXbot Classic's net_gex_vol (volume-weighted net gamma) and net_gex_oi (open-interest-weighted net gamma):

Four tagged major strikes — Long Gamma (OI), Short Gamma (OI), Long Gamma (Volume), Short Gamma (Volume) — each the single largest call-/put-side gamma strike by that metric. Alongside them, a background heatmap board split into two columns (OI on the left half, Volume on the right half of one strip) shows the next five largest-magnitude strikes per metric as fainter, intensity-scaled bands — the top two (already covered by the tagged majors) are skipped.

The four tagged majors are the persistent "big" walls, one per side per lens. The heatmap board's fainter bands show secondary concentration nearby — useful for spotting a second layer of support/resistance beyond the single biggest strike. If the OI-based and Volume-based views cluster at different strikes, that's a flow-vs-positioning divergence in visual/spatial form — the same underlying idea as the Divergence Oscillator's single number, just spread across the chart instead of collapsed to one line.

A strict superset of Classic Strike Heatmap: the same gamma majors and OI/Volume background board, plus a second, independent DEX layer — Long DEX / Short DEX tagged majors and its own background board, sourced from GEXbot's State-tier delta data. A separate Combine 0DTE + 1DTE (DEX) toggle blends the DEX layer's expiries independently of whatever the gamma side's Majors Category is set to.

Both the OI and Volume boards (gamma side) show the top 5 strikes by magnitude, ranked independently per metric, with the two already-tagged majors excluded and the remaining three shown as unlabeled, intensity-only highlights — the same redesign as Classic Strike Heatmap's board.

Layering GEX (gamma — hedging flow tied to price level and volatility) and DEX (delta — hedging flow that exists independent of a vol move) on one chart lets you see whether gamma-implied pinning levels and delta-implied directional levels agree or diverge. A strike that shows up heavy in both lenses is a stronger structural level than one that only appears in gamma or only in delta.

Every one of the seven Backtest-Mode indicators on this site has a second, parallel copy that lives in its own GEXBOT-Teaching/ folder, repackaged under com.example.teaching.* and suffixed (Backtest Demo) in Bookmap's add-on list so it's never confused with the live version. The live-polling code isn't just hidden behind a checkbox here — the API key field, the live pollers, the GEXbot HTTP clients, the ticker resolver, and the SPX/QQQ ratio auto-fetch machinery are all removed from the source entirely. There is no way to run a TEACH build against live GEXbot data, by design — it only ever reads a downloaded historical file.

That makes this the version to hand to someone learning the tools, demoing them, or just trying them out without paying for a GEXbot plan first. The underlying math — centroids, the hedging composite, divergence, the heatmaps, the level ladder — is identical to the live siblings; only the data source and a handful of live-only settings differ.

Loading the Classic and State Strike Heatmap (Backtest Demo) indicators together used to visually overlap — both painted their bands at the same screen position. Fixed with a Heatmap Horizontal Offset (px) setting on each (Classic defaults to 0px, State to 400px), so the two separate cleanly out of the box at typical chart widths; nudge the slider if a very narrow or very wide chart still overlaps them.

Sample GEXbot day-bundles (.zip) and Bookmap replay data files (.bmf) so you can try the TEACH demo without downloading your own GEXbot export first.