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CareDx CDNA 54.76 0.93 1.73%

CDNA Options Support & Resistance

CDNA (CareDx): Explore options-derived support and resistance levels, call walls and put walls. Free delayed preview.

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ATM IV
0.338
Put Call Ratio (OI)
3.86
Put Call Ratio (Vol)
0.239
IV Rank
2.96
IV Percentile
0.4
Max Pain
50

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)

$20 Key Put Strike 3 $22 Key Call Strike 3 $45 Put Wall $50 Max Pain $55 Call Wall