After rejection at the Call Wall, the market entered a -gamma trend; the Put Wall and -Γ OI failed, closing weak.
At the open, ES/SPX was in the +gamma zone with the Call Wall at 7622.43. Price touched this level at 09:30 and was immediately rejected, pulling back 0.30% within 15 minutes—a classic sign of dealer reverse hedging. At 09:34, price crossed the HVL/0Γ at 7609.10, shifting dealers from +γ to -γ territory and entering a -gamma trend regime. Between 09:49-09:50, the DEX 1m showed net put preference exceeding -3σ twice (-350 and -442), indicating directional selling pressure from large orders. The Put Wall at 7577.30 and -Γ OI at 7582.68 were repeatedly tested during the session (27 and 28 times, respectively), but both were ultimately broken through without recovery, signaling that these support levels had failed. Between 10:14-10:42, price repeatedly crossed the 0Γ level at 7593.73, with dealers switching between +γ and -γ six times, forming a typical regime_shift oscillation pattern. At the close, price settled at 7566.19, below both the Put Wall and -Γ OI. Net GEX remained unchanged at 45, but net DEX flipped from +70 at the open to -3K, indicating dealers' overall positioning turned put-heavy, with the market in a -gamma trend regime.
Call Wall capped the top while Put Wall held; dealers switched from +γ to -γ, closing with a bearish bias but no breakout.
At the open, NQ was in a +gamma regime, with the Call Wall @30707.05 and Put Wall @30662.13 forming the upper and lower boundaries, requiring dealers to hedge in reverse to maintain price stability. At 09:34, the Call Wall was rejected and price fell 0.70%, while crossing the 0Γ at 30826.54 into a -gamma regime, where dealers began hedging in the same direction, accelerating the decline. At 09:44, DEX 1m net change was +184 (3.1σ), showing a surge in call preference, but price still broke below the Put Wall and -Γ OI, creating a brief squeeze. Subsequently, from 10:01 to 11:44, there was a 104-minute gamma pin, with price oscillating in the [30595.99, 30737.64] range; the Put Wall held multiple times and triggered rebounds of 0.22%. At the close, the Call Wall migrated to 30647.05, the Put Wall migrated to 30607.21, and both HVL and 0Γ moved down to 30634.65. Net GEX fell from 50 to 40, and net DEX deteriorated from -10 to -413, showing dealer positioning shifting toward -gamma. The market transitioned from the opening +gamma pin to a closing -gamma regime, but without forming a one-sided trend.
VIX closed lower amid volatility, but Call Wall shifted significantly higher, signaling clear tail-risk repricing.
At the open, VIX was at 16.21, HVL at 16.16, 0Γ at 16.00, with dealers in the +γ zone and market expectations stable. However, just 2 minutes after the open, VIX crossed 0Γ at 16.68, quickly flipping dealers to -γ and entering a negative gamma state, setting the stage for subsequent sharp volatility. After touching HVL at 09:34, DEX showed an extreme net call preference of 10.9σ at 09:53, indicating a surge in OTM call demand and the start of tail-risk repricing. During the session, VIX oscillated between 15.94 and 16.63, with HVL breached multiple times (invalidated after 10 touches), dealers frequently switching between +γ and -γ (at 09:38, 09:42, 10:10, etc.), and dense gamma squeeze events (alternating positive and negative), reflecting sharp swings in market uncertainty expectations. At the close, VIX fell back to 16.05, Call Wall migrated significantly from 17.00 to 21.02, Put Wall edged down from 15.76 to 15.00, 0Γ moved up to 16.32, and dealers ultimately returned to the +γ zone. Despite VIX closing lower, the significant upward shift in Call Wall and the invalidation of HVL indicate that option sellers successfully defended above the 17 level, but tail-risk pricing has clearly risen, with market expectations for 30-day volatility remaining cautious.
This is a historical post-close recap for information and education only — not investment advice.