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Prothena Corporation plc Ordinary Shares PRTA 8.75 0.17 1.98%

PRTA Gamma Exposure (GEX)

PRTA (Prothena Corporation plc Ordinary Shares): See how call and put gamma exposure is distributed across option strikes. Free delayed preview.

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ATM IV
0.73
Put Call Ratio (OI)
0.55
Put Call Ratio (Vol)
0.657
IV Rank
16.6
IV Percentile
61.2
Max Pain
7

Gamma exposure (2026-09-21)

GEX estimates dealer hedging flow at each strike.

Positive GEX = dealers are long gamma; they buy the dip and sell the rip, dampening volatility. Negative GEX = dealers are short gamma; they sell the dip and buy the rip, amplifying volatility.

DTE \text{DTE}
25.0
487.0
| Δ | |\Delta|
0.00
1.00
Moneyness Moneyness
-11.5
11.5
View values by strike
PRTA · Gamma exposure · 2026-09-21. USD of exposure per 1% underlying move.
StrikeCallsPuts
3.00 1.95 0
5.00 58 0
6.00 33.7 -9.27 K
7.00 66.2 -2.59 K
8.00 204 -47
9.00 1.12 K -929
10.00 1.48 K -40
11.00 18.5 K -9.86
12.00 1.02 K -199
13.00 522 0
14.00 435 0
15.00 6.91 K -5.47
16.00 64.3 0
17.00 7.61 0
18.00 36.9 0
20.00 520 0