Ladder chart & key nodes

What it answers

The ladder chart lists strikes in price order and shows net Gamma Exposure at each level. It helps answer: which two levels contain the current price? What is the nearest significant node? If price leaves the current range, where is the next structural level?

Read a ladder in four steps

1. Locate spot: find the row containing price and the adjacent strikes above and below it.
2. Identify priorities: look for rows with large absolute values, not only the largest positive or most negative value.
3. Read the sign: treat the sign as a clue about a potential hedging environment that amplifies or dampens movement.
4. Read the distance: compare the distance to the next significant node. A larger gap can mean both more room to move and greater uncertainty.

Size, sign, and location

Absolute value sets the observation priority. The sign helps explain hedging sensitivity in the model. Whether a node is above or below spot determines when it might become relevant along the current path. All three must be read together.

Reading Vanna and Charm ladders

The bars work exactly the same way. When you switch to Vanna or Charm, you still read the same ladder for absolute value, location, and freshness. What changes is what the number represents and when it matters.

• Vanna: measures how much dealers may need to adjust hedges at a level for each change in implied volatility. It does not represent "support or resistance" or "easier to break." Think of it as a marker that says, "If IV moves, this level will be affected too." Around earnings, the FOMC, or CPI, when IV can change sharply, revisiting the level often reveals that structure has quietly shifted even when price has barely moved.
• Charm: measures how much dealers may need to adjust hedges at a level as time passes. It requires no change in price or volatility; time passing alone can trigger it. Its effect concentrates near the close and near expiry, especially for 0DTE and during monthly expiry week. The closer those moments get, the more attention strikes with large Charm deserve.

How to interpret them, not just view them

Seeing a bar is only the first step. The more useful question is: if IV changes or the relevant time arrives, how much positioning could this level affect, and whose positioning is it?

• Length = the amount of risk Exposure here: a long bar means that if IV moves or expiry approaches, dealers may need to adjust a larger position at this level. Note it and return when a trigger such as an event or the close approaches to see whether it reacts. A short bar can affect only limited positioning even when the trigger appears, so it can remain a lower priority.
• Above or below spot = which direction reaches it: price has not yet reached the level, but that does not make it irrelevant. Its location determines which "trigger level" price would encounter first if it moves in that direction. Levels closer to spot are more likely to be triggered soon. Distant levels may not matter unless price develops a clear trend.
• Positive or negative net value: unlike Gamma's broadly useful "negative amplifies, positive dampens" framework, Vanna and Charm have no equally clear universal rule. The hedge direction behind the same sign can vary with the position structure, making a directional conclusion riskier than with Gamma. Use absolute net value to rank priorities; do not use the sign to guess where price will go.
• Separating the Call and Put sides is more informative: Vanna driven mainly by Calls at a strike usually means its sensitivity comes from bullish speculation or upside hedging. Put-driven Vanna is more likely to come from protective buying or bearish positioning. Call-side Vanna that is unusually large before earnings or another event often reflects speculative directional bets. Those positions are most likely to be closed when the event passes and IV collapses—a vol crush—which can create the sharpest multi-day adjustment. Put-heavy positioning is more likely to be protective and may unwind gradually rather than through concentrated selling.

What changes when bars grow or shrink

The 10-, 20-, and 30-minute historical snapshot markers overlaid on the ladder also apply to Vanna and Charm, but the reasons those bars grow are not identical:

• Vanna grows: new option trades or OI changes may have appeared at the strike, or implied volatility itself may be moving. When IV changes, the calculated Vanna changes even without a new trade. Vanna at a strike also generally rises as price approaches it, similar to Gamma's increased sensitivity near spot.
• Charm grows: in addition to new trading, OI changes, and price approaching the strike, Charm has a factor that neither Vanna nor Gamma has: the passage of time itself. As expiry approaches, Charm for the same outstanding contracts can rise mechanically without anyone placing a new order. If Charm bars grow late in the session, do not immediately conclude that capital is acting; it may simply be that the time trigger has arrived.

Read it with GEX: if GEX at a strike is stable while Vanna suddenly grows, today's price structure remains intact but the level's sensitivity to a volatility event is rising, so it is worth noting. If GEX is decaying—the node is weakening—while Charm grows at the same strike, the level can still matter, but its driver has shifted from a price structure dealers actively defend to a time-driven need to adjust positions. Near the close, the latter is more likely to appear as one concentrated directional push than as repeated price interaction at the level.

Do not read it this way

• Do not draw a conclusion from color or sign alone.
• Do not treat one expiry as the entire market.
• Do not ignore whether price has already crossed a node, or whether the node is near expiry or restructuring.
• Do not turn a node directly into an entry, stop, or promised return.