ES shifted from a +gamma pin to a -gamma squeeze, then closed back in a +gamma pin, with HVL and -Γ OI levels invalidated.
ES opened at 7348.18, HVL at 7348.18, 0Γ at 0.00, net GEX at 0, dealers in a neutral-to-positive gamma state. Price formed a 32-minute gamma pin in the 7355-7391 range, requiring dealers to hedge in reverse, limiting volatility. At 09:41, price crossed 0Γ at 7358.49, dealers shifted to a -gamma regime, began pro-cyclical hedging, driving price higher. At 10:24, DEX 1m net change +318 (2.7σ), showing call preference, but at 10:32, DEX 1m net change -414 (-3.6σ), a put preference surprise, price pulled back from the 7405.56 high. Intraday HVL (7321.05) was touched 15 times before breaking at 12:52, -Γ OI (7322.10) was touched 3 times before breaking at 11:49, indicating support levels lost. At close, ES reported 7276.65, net GEX rose to 15, cumulative net DEX at 838, Call Wall migrated to 7294.08, Put Wall migrated to 7279.00, 0Γ migrated to 7293.92, dealers returned to a +gamma regime, price formed a new pin zone in the 7275-7294 range.
After NQ flipped from +γ to -γ, dealers' same-direction hedging amplified the downside, closing bearish.
At the open, NQ was in the +gamma zone, with dealers needing to hedge inversely to maintain delta neutrality, and price oscillating narrowly around 28869.84. At 09:34, price first touched +Γ OI 28795.82, triggering a 5-minute 0.61% positive gamma squeeze, but then crossed 0Γ twice consecutively at 09:40 and 09:45 (to 28971.07 and 29201.07 respectively), flipping dealer positioning from +γ to -γ and entering trend-following mode. At 10:48 and 11:03, price crossed 0Γ again, confirming -γ regime dominance. After breaking below -Γ OI 28761.07 at 11:22, a 5-minute 0.64% negative gamma squeeze occurred at 11:45, accelerating the downside. After breaking below HVL 28747.96 at 11:49, HVL became invalid, and dealers' same-direction hedging in the -γ zone exacerbated the downtrend. From 12:02-12:45, a 44-minute gamma pin occurred within the range [28732.41, 28868.92], but price ultimately broke out of the pin range. Net GEX rose to 40 and net DEX fell to -108 before the close, indicating dealers accumulated significant put positions into the close, with bearish market sentiment.
VIX oscillated sharply intraday, repricing to 22.08 into the close, with Call Wall rising to 23 and significant tail-risk premium.
At the open, VIX gapped up from 21.07 but quickly dropped 2.85% (09:33), triggering a reverse gamma squeeze. At that time, 0Γ was at 23.50 (09:37), and dealers switched from +γ to -γ, meaning the market entered negative gamma territory, raising the risk of amplified volatility. Subsequently, VIX oscillated sharply in the 20.07-22.66 range, frequently switching back and forth near 0Γ (e.g., at 10:06 it switched from -γ to +γ, and at 10:13 back to -γ), accompanied by high-frequency flips in DEX net positioning between call and put preferences (e.g., at 09:58 net put preference -6.4σ, at 10:02 net call preference +3.2σ), indicating extremely unstable hedging demand into the close. Before the close, VIX settled at 22.08, Call Wall migrated from 0 to 23.00, Put Wall from 0 to 18.00, and HVL dropped from 21.07 to 18.50, suggesting option sellers successfully defended near 23, but vol-of-vol remains elevated.
This is a historical post-close recap for information and education only — not investment advice.