Dealers frequently switched regimes near HVL, ultimately pinning price in +gamma, with Call Wall shifting up to support the close.
ES opened at 7310.01 with net GEX at 85, with dealers in a +gamma regime. Price oscillated around HVL 7288.58 and 0Γ 7305.85, with dealers pinning prices through reverse hedging. At 09:38, it first crossed 0Γ 7302.52 into -gamma, but quickly switched back to +gamma at 09:45, showing intense dealer positioning near HVL. At 10:23, DEX 1m showed a +430 3.4σ net call preference as whale capital entered, pushing price above HVL. Subsequently, gamma pins occurred twice between 10:10-10:54 and 11:03-11:39, with ranges [7289.97, 7322.86] and [7274.94, 7309.04] respectively, as dealers frequently switched between -gamma and +gamma, totaling 17 regime shifts. At 11:00, Put Wall 7265.85 held, rebounding 0.38% within 15 minutes, confirming downside support. Before close, Call Wall migrated from 7358.35 to 7403.27, up +44.92 points, with net GEX rising to 145. Dealers ended in a +gamma regime, with price closing at 7401.41, near the Call Wall.
After frequent regime shifts, NQ ultimately entered a -gamma trend mode, closing strongly above key resistance.
At the open, NQ was at 28748.10, below the 0Γ level of 28709.91, placing dealers in a +gamma zone, favoring pinning or reversal. Price quickly rallied after the open, crossing 0Γ for the first time at 09:34 to 28799.91, shifting dealers to -gamma and triggering a positive gamma squeeze, with a 0.69% gain within 5 minutes. At 09:53, price touched the Put Wall at 29002.41, where DEX 1m net changed by -170 (-4.6σ), indicating a surge in put preference, and price briefly pulled back into the +gamma zone. For most of the session, price repeatedly crossed around 0Γ, with dealers frequently switching between +gamma and -gamma, recording 37 regime shifts in total. From 11:32 to 12:09, a 38-minute gamma pin occurred, with price oscillating narrowly between 28756.25 and 28893.12. In the afternoon, price broke above the +Γ OI level of 29269.91 and continued higher, closing at 29457.35, well above the 0Γ level of 29340.08. Dealers ended in the -gamma zone, with net GEX rising from 50 at the open to 127, and net DEX dropping from 114 to -2K, indicating dealer positioning migrating toward negative gamma, supporting trend continuation.
VIX opened high and closed low, with multiple gamma squeezes during the session, tail-risk repricing dominating, and vol-of-vol rising.
VIX opened high at 21.40, with Call Wall at 29.02, Put Wall at 19.00, HVL at 20.50, and 0Γ at 20.50, indicating a bullish but highly volatile market. Immediately after the open, a reverse gamma squeeze occurred, with a 0.97% drop within five minutes at 09:31, followed by a positive gamma squeeze at 09:36 surging 1.50%, showing extremely unstable dealer positioning and repeated battles around the HVL. At 09:52, DEX 1m net change was -1 (-2.5σ), with increased net put preference, indicating the start of tail-risk repricing. During the session, after VIX hit a high of 22.59 at 10:08, a reverse gamma squeeze at 10:18 drove a 2.50% decline, and at 10:19 DEX 1m net change was -3 (-8.5σ), with a sharp rise in net put preference, intensifying market panic. Subsequently, gamma squeezes occurred frequently, and at 11:46, cvr_spike showed a single-minute cvrMax of 0 (3.5σ), with instantaneous large orders, indicating rising vol-of-vol. At the close, VIX fell back to 19.54, Call Wall migrated significantly to 20.03, Put Wall slightly declined to 18.74, HVL was breached and invalidated, 0Γ dropped to 19.83, +Γ OI rose to 23.50, and -Γ OI held at 18.00. Dealer positioning shifted from a bullish structure at the open to neutral-bearish, but no clear regime switch formed into the close, and the market remained in a high-volatility state.
This is a historical post-close recap for information and education only — not investment advice.