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Citigroup — Where open interest creates price support and resistance
Citigroup (C) is a Financials stock with actively traded listed options. Open interest concentrates at the $110 put wall (25.6K contracts) and $130 call wall (33.1K contracts) — 4.2% below and 13.2% above spot. Dealer hedging flows at these levels tend to dampen directional moves, reinforcing the wall corridor. This setup is more supportive of premium selling inside the wall range. See Strategy Builder for trade setups.
Where options dealers' hedging flows create support and resistance — max pain at $110.
These levels show where price may find support or resistance based on open interest positioning. Large put walls can act as magnets; call walls can cap upside.
Use wall levels to pick strikes — sell puts near put walls, sell calls near call walls.
Wall = Strike with highest open interest concentration across expirationsOpen interest by strike, gamma exposure (GEX) profile, max pain calculation
ORATS open interest and gamma data, updated daily
Walls are based on current OI positioning and can shift as traders open/close positions. GEX assumes most OI is dealer-held — retail-heavy OI produces less hedging flow. Treat as context, not prediction.
Walls from nearest liquid expiry — these reflect short-term hedging activity and may not represent longer-term positioning.
OI change tracker (1-day), wall strength score, and GEX trend chart — in active development.
This data is free for all users. No paywall — just not built yet.
Quantitative screening, not investment advice. Verify with your broker. Disclaimer
Citigroup's options open interest is evenly distributed between put support at $110 (25.6K contracts) and call resistance at $130 (33.1K). This balanced positioning typically signals that the options market is not expecting a strong directional move — dealers are hedging symmetrically. For premium sellers, balanced walls are a neutral-to-positive signal: iron condors and strangles can use both walls as natural boundaries, while credit spreads work equally well on either side.
Citigroup's current options landscape shows put support concentrated at $110 (25.6K contracts) with call resistance at $130 (33.1K). This creates a $110–$130 trading corridor that dealer hedging activity naturally reinforces. Compare this wall-to-wall range with the Expected Move to see how volatility-based ranges align with open interest boundaries.
Citigroup's net gamma exposure is +4.4B (positive gamma regime), with the GEX flip point at $111.00. In a positive gamma environment, dealers are positioned so that they buy shares when price dips and sell when it rallies — effectively dampening volatility. This mean-reverting behavior is the best backdrop for premium selling: short strangles, iron condors, and credit spreads all benefit from the natural volatility compression that positive GEX creates. As long as price stays above the GEX flip point, this supportive environment tends to persist.
Citigroup's strongest put wall (support) is at $110 with 25.6K open interest contracts, and the primary call wall (resistance) is at $130 with 33.1K contracts. This creates a trading range of $110–$130. Open interest is relatively balanced between puts and calls, creating symmetric dealer hedging pressure.
Open interest walls represent concentrations of options positions at specific strikes. When dealers hold these positions, they must hedge by buying or selling shares as price approaches wall levels, creating natural support (put walls) and resistance (call walls). Citigroup currently has positive gamma exposure, which means dealer hedging reinforces these wall levels — buying dips near put walls, selling rallies near call walls. This creates a mean-reverting, range-bound environment that benefits premium sellers.
Citigroup's $110–$130 range spans 17.4%, wider than average. This spread suggests open interest is distributed across distant strikes, which can mean the market is pricing in a larger potential move — possibly around an upcoming catalyst like earnings or an industry event. For premium sellers, wider ranges mean wall support and resistance are farther from current price, providing more breathing room but also less concentrated dealer hedging at any single level.
With earnings approximately 13 days away, Citigroup's current wall structure should be interpreted with caution. Earnings gap moves routinely exceed the wall-to-wall range — the $110–$130 corridor is based on current open interest, which will shift dramatically around the announcement as traders close pre-earnings hedges and new post-earnings positions are established. Premium sellers carrying positions into the earnings event should assume the walls may not hold and size accordingly.
With positive gamma and mid-range positioning, iron condors with short strikes near the walls ($110/$130) benefit from dealer hedging support on both sides. Wall data is most useful for strike selection — placing short strikes at or outside major open interest levels means your trade has dealer hedging flows working in your favor. Monitor daily for wall migration as open interest shifts.