MRK gamma levels.

Where MRK tends to stick and where it slips: the call wall, put wall, gamma flip and Volt, 15-minute delayed and free.

• MRK $145.45 · down 0.10% on the day · positive gamma overall (moves grind and levels hold)
• Levels: ★ Volt, the biggest level 150 (above price · 4.55 / 3.13% away); ↯ Surge, live flow 145 (below price · 0.45 / 0.31% away); ‖ call wall — ceiling, sticky 150 (above price · 4.55 / 3.13% away); ‖ put wall — floor, slippery 135 (below price · 10.45 / 7.18% away); ↘ Reversal 135 (below price · 10.45 / 7.18% away)
• Expected move today ±5.17
• Strikes nearest the money (high to low): 148 positive, 147 positive, 146 positive, 145 positive, 144 negative, 143 negative
• Weekly magnet confluence: the next 4 weekly expirations put their biggest positive-gamma level above price (agreement of positioning, not a prediction).
• Since yesterday's close, positioning grew at 145 and faded at 165.
• Event pricing: the options market prices an unusually large move into 2026-10-30 (±$12.97 by that date, about 1.9x this board's normal daily move). On single names this is usually an earnings report. Descriptive of the market's own pricing, never a forecast.
• ATM implied volatility 31.4%