Prothena Corporation (PRTA)
NASDAQ: PRTA
· Real-Time Price · USD
8.39
0.12 (1.45%)
At close: Sep 03, 2025, 3:59 PM
PRTA Gamma Exposure By Expiry
The total Gamma Exposure (GEX) for PRTA across all expirations is -9,353.62 shares per 1% move, with 17,832.37 from calls and 27,185.99 from puts. The put-call GEX ratio of 1.52 indicates heavy put positioning, suggesting market makers may need to buy shares on declines (supportive) and sell on rallies (resistance). The highest gamma concentration is at the Sep 19, 25 expiration with -3,885.53 net GEX, which may act as a pivot point for price action. Near-term exposure for Sep 19, 25 suggests possible volatility from negative gamma effects.
PRTA GEX Table
| Expiry Date | Call GEX | Put GEX | Net GEX | P/C GEX |
|---|---|---|---|---|
| Sep 19, 25 | 11,259.5 | -15,145.03 | -3,885.53 | 1.35 |
| Oct 17, 25 | 221.47 | -1,555.67 | -1,334.2 | 7.02 |
| Dec 19, 25 | 711.75 | -3,626.16 | -2,914.41 | 5.09 |
| Jan 16, 26 | 5,042.2 | -6,847.44 | -1,805.24 | 1.36 |
| Mar 20, 26 | 597.45 | -11.69 | 585.76 | 0.02 |