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May 18 2026

NVIDIA Drops 6 Points Post-OPEX After Losing Key Gamma Support

SpotGamma traders know how important support and resistance levels can be, making it highly impactful when they disappear. Following May Options Expiration, NVIDIA (NVDA) lost a large zone of positive Gamma support that had helped stabilize price for weeks.

SpotGamma’s Compass, Equity Hub History, and Dealer-Side Gamma Heatmap all pointed toward a weakening setup before the market opened. When HIRO confirmed traders were buying puts and selling calls immediately after the open, the pieces aligned for a high-conviction short setup that captured a six-point move lower with a 6:1 reward-to-risk ratio.

Author:  Doug Pless
Professional Trader & SpotGamma Content Contributor

The Setup The Tools The Execution The Payoff
Stock: NVIDIA (NVDA)

Trade Type: Intraday short using stock shares

Bias: Bearish following May OPEX

Volatility: Expensive implied volatility with positive gamma support expiring

Thesis: Compass, Equity Hub History, and the Calendarized Gamma Heatmap all pointed to weakening support after options expiration. A rejection at the $230 Call Wall with bearish options flow created a high-probability short setup.
Compass
• Upper-right quadrant (high IV Rank + high Risk Reversal Rank)
• Indicated expensive volatility and downside potential

Equity Hub History
• Key Gamma Strike shifted lower
• Hedge Wall shifted lower
• Call Wall shifted lower
• “Bearish hat trick” signaled traders rolling positions to lower strikes

Calendarized Gamma Heatmap
• Showed large positive gamma support disappearing after OPEX
• Suggested reduced price support and greater downside potential

HIRO
• Traders immediately bought puts and sold calls
• Market makers sold stock to hedge delta exposure
Entry: Short stock at $226.10 after first pullback below the $230 Call Wall

Trigger: Bearish options flow confirmed by HIRO following rejection at resistance

Stop Loss: $1 above entry

Target: Just above the $220 Key Gamma Strike

Exit: Covered at $220.15 around 12:30 PM as bearish flow subsided
Move Captured: Nearly 6 points

Reward/Risk Ratio: 6:1

Result: High-probability intraday short driven by post-OPEX positioning changes and real-time options flow

Exit Signal: Traders stopped buying puts and selling calls, signaling downside momentum had exhausted
  • Compass identified NVDA as a high-conviction bearish candidate, with expensive calls and elevated downside potential.
  • The Calendarized Gamma Heatmap revealed that positive gamma support disappeared after OPEX, removing a key source of buying pressure should price drop.
  • HIRO confirmed bearish positioning at the open, as traders bought puts and sold calls while market makers sold stock to hedge.
  • The trade captured nearly six points into the $220 Key Gamma Strike, delivering a clean 6:1 reward-to-risk intraday setup.

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Written by SpotGamma · Categorized: Case Study · Tagged: Case Study, Doug Pless, NVDA

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