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Cardiff Oncology CRDF 1.31 -0.06 -4.18%

CRDF Options Support & Resistance

CRDF (Cardiff Oncology): Explore options-derived support and resistance levels, call walls and put walls. Free delayed preview.

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ATM IV
0.862
Put Call Ratio (OI)
0.00659
Put Call Ratio (Vol)
0.0734
IV Rank
6.94
IV Percentile
6.2
Max Pain
1

Option Walls

A gamma wall is a strike where dealer gamma is concentrated.

Price often pauses or reverses there because dealers must hedge aggressively when the underlying crosses it. Walls above spot tend to act as resistance; walls below spot tend to act as support.

See also: Gamma exposure (GEX)

$1 Max Pain $1 Call Wall $2 Key Put Strike 2 $5 Key Call Strike 3