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$60 Million in Bullish Calls Just Hit Memory Chips

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ticker lesson

Breakdown

0:04Micron· ticker

Micron — repeated call flow, 9.1M premium

  • 9.1M call premium across four trades
  • 72–93% volume on ask side
  • Repeat flow signals sustained buying
  • Stock rebounds from $804 to $1,000
  • Calls cluster near $1,100 strike
1:55SanDisk· ticker

SanDisk — 46.7M call premium, 81% ask volume

  • August 21st $1,600 call with 46.7M premium
  • 81% volume on ask side
  • Stock rallies from $1,325 to $1,678
  • Open interest fell 13%
  • Potential roll or fresh positioning
3:35SK Hynix· ticker

SK Hynix — 4.4M call premium, 92% open interest rise

  • July 31st $170 call with 4.4M premium
  • Open interest up 92%
  • Stock climbs from $145.60 to $174
  • Calls near $194.80 peak
  • Cleanest open interest build
5:28lesson

DRAM/HBM fundamentals drive sector re-rating

  • Micron Q3 revenue: $41.5B, 84.9% gross margin
  • Q4 guidance: $50B revenue, 86% margin
  • SK Hynix Q1 revenue: 52.6T won, 37.6T operating profit
  • HBM margins dominate AI supply chain
  • Repricing of memory space fundamentals
7:25lesson

NAND supply/demand dynamics and risk horizons

  • SanDisk NAND supply growth may outpace demand in 2027
  • Q3 NAND gross margin: 78.4% (up 27.5pp)
  • Q4 revenue guidance: $7.8–8.3B, $32–33 EPS
  • Long-term risks challenge valuations
  • Rallies may face cap from supply-demand shifts
9:03lesson

Options volatility and trade durability

  • Implied volatility 86–147% on short-dated calls
  • Expensive calls with limited patience
  • SanDisk open interest decline weakens signal
  • Momentum vs. conviction in trade duration
  • Breadth confirms sector-wide rebound

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