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PRTA
Prothena Corporation plc
stock NASDAQ

At Close

Aug 4, 2026 3:59:57 PM EDT

8.48USD+2.106%(+0.17)329,912

7.12Bid 9.71Ask 2.59Spread

Pre-market

Jul 31, 2026 8:51:30 AM EDT

8.81USD+8.498%(+0.69)0

After-hours

Aug 4, 2026 4:00:30 PM EDT

8.49USD+0.059%(+0.01)88,521

OverviewMax PainHistoricalExchangesShortsMore

PRTA Max Pain Summary

The max pain for PRTA on August 21st, 2026 is $8.00.

PRTA Option Chain Summary

	Calls		Puts		Max	P/C	Price vs.
Exp.	ITM	OTM	ITM	OTM	Pain¹	Ratio²	Max Pain
Aug 21, 2026	20	3,582	2	2	8.00	0.00	+6.00%
Sep 18, 2026	17	2,697	2,289	1,254	9.00	1.31	-5.78%
Dec 18, 2026	4	2,239	1	2,330	7.00	1.04	+21.14%
Jan 15, 2027	50	1,606	17	12	6.00	0.02	+41.33%
Mar 19, 2027	0	1	0	0	1.00	0.00	+748.00%
Jan 21, 2028	9	222	22	6	12.00	0.12	-29.33%
Totals	100 10,447 H	10,347	2,331 5,935 H	3,604		0.57

¹ Maximum pain is the strike price with the most open puts and calls and the price at which the stock would cause financial losses for the largest number of option holders at expiration. Investopedia

² In general, greater than 0.7 suggests bearish sentiment is building in the market; below 0.7 is considered a bullish indicator. Investopedia