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Secondary level badges

Beyond the five primary levels (C1, cT, HVL, pT, P1), the classification engine marks the strongest secondary gamma walls, combined-gamma peaks, open-interest clusters, session-volume peaks, and delta-exposure extremes. Each badge answers a distinct question about the option chain.

Secondary gamma walls & Abs GEX

Badge	Metric family	Exact strike it marks
`C2–C6`	Net GEX (Call walls)	The 2nd through 6th largest positive Net GEX strikes above `HVL`, ranked strictly by gamma magnitude (not distance from spot).
`P2–P6`	Net GEX (Put walls)	The 2nd through 6th largest negative Net GEX strikes below `HVL`, ranked strictly by gamma magnitude.
`Ab1–Ab3`	Abs GEX	The 1st, 2nd, and 3rd largest strikes by combined call-gamma plus put-gamma magnitude. Unlike Net GEX, this stays large when heavy call and put gamma sit on the same strike and cancel each other in the net.

Open interest badges (COI, POI, nCOI, nPOI, AbOI)

Open interest (OI) measures contracts already open before today’s session (updated on the daily clearing cycle). Five badges separate raw side-specific peaks, net one-sided dominance, and total two-sided crowding:

Badge	Full name	How it is calculated and when it differs
`COI`	Call Open Interest peak	The strike with the largest raw call open interest (`Call OI`), regardless of how many puts sit at that strike.
`POI`	Put Open Interest peak	The strike with the largest raw put open interest (`Put OI`), regardless of how many calls sit at that strike.
`nCOI`	Net Call Open Interest peak	The strike with the most positive `Net OI` (`Call OI − Put OI > 0`)—where call contracts exceed put contracts by the largest margin.
`nPOI`	Net Put Open Interest peak	The strike with the most negative `Net OI` (`Put OI − Call OI > 0`)—where put contracts exceed call contracts by the largest margin.
`AbOI`	Absolute Open Interest peak	The strike with the largest combined open interest (`Call OI + Put OI`), highlighting the most crowded strike overall.

Why COI, nCOI, and AbOI can land on different strikes

Suppose strike 6,700 holds 40,000 calls and 38,000 puts, while strike 6,800 holds 30,000 calls and 2,000 puts:

6,700 gets COI (40,000 is the highest call OI) and AbOI (78,000 total contracts), even though its net OI is only +2,000.
6,800 gets nCOI because its net call dominance (+28,000) is far larger than at 6,700.

Conversely, when one side completely dominates a strike, COI, nCOI, and AbOI often share that same strike—counting as three badges from the same positioning family rather than three independent signals.

Session volume badges (CV, PV, nCV, nPV)

Volume badges apply the exact same raw-versus-net logic to traded contracts during the active session (prior session before 9:30 AM ET):

Badge	Full name	Exact strike it marks
`CV`	Call Volume peak	The strike with the highest raw call volume traded in the session (`Call Vol`).
`PV`	Put Volume peak	The strike with the highest raw put volume traded in the session (`Put Vol`).
`nCV`	Net Call Volume peak	The strike where session call volume exceeds put volume by the largest margin (`Call Vol − Put Vol > 0`).
`nPV`	Net Put Volume peak	The strike where session put volume exceeds call volume by the largest margin (`Put Vol − Call Vol > 0`).

High volume at CV or PV shows where contracts are actively changing hands today, not whether traders are buying to open, selling to open, or closing existing positions.

Delta exposure badges (D+ & D−)

Badge	Full name	Exact strike it marks
`D+`	Positive Net DEX peak	The strike with the largest positive Net DEX (call-delta-weighted OI minus put-delta-weighted OI).
`D−`	Negative Net DEX peak	The strike with the largest negative Net DEX (put-delta-weighted OI dominance).

Filtering and confluence

In the WebApp, Relative Size Filtering (in Ctrl+M) hides smaller secondary levels within each group while keeping C1, P1, and HVL visible. Always check the Level Status pill next to the settings gear to see whether a missing badge is Filtered, Off-screen, or Disabled, and see Confluence for how to read multiple badges sharing one strike.

Where you see it

GEX Live Table and GEX Live Chart secondary level badges and Level Analysis
Column metrics for the full strike-by-strike distributions behind these peaks
GEX Profile PRO secondary strikes

TanukiTrade documentation. Levels are context, not a recommendation. tanukitrade.com