thetaOwl

PRTA

Prothena Corporation plcClose $9.35EOD only
Max Pain
$10.00
Next expiry Jun 18, 2026
Expected Move
±$2.67
28.6% from close
Price Gap
+0.65
Distance to max pain
IV Rank
4
Low premium
P/C OI
0.38
Slightly call-heavy
Consensus
No reports available
Published snapshot: May 20, 2026 close
End-of-day snapshot

This page reflects PRTA options positioning from the latest published market-close snapshot. Intraday price and contract changes are not displayed.

Published Snapshot
May 20, 2026 close
Max Pain — PRTA
Data as of market close May 20, 2026

Nearest listed expiration 2026-06-18 shows max pain at $10.00 (0.65 above spot). Use this page to evaluate pin-risk zones, strike pressure, and open-interest concentration before selecting trade structure.

Max Pain Strike
$10.00
Nearest expiry
Expected Move
±$2.67
±28.6%
Days to Expiry
29
Calendar days
Total Call OI
3,553
Nearest expiry
Total Put OI
741
Nearest expiry
P/C OI Ratio
0.21
Put-heavy
Spot Price
$9.35
Published close
Consensus
-
Open report for full read

Max Pain by Expiration

Pain by Strike

Drill into expiration
Selected: 2026-06-18
ExpirationMax Pain StrikeLast Updated
2026-04-17$9.004/17/2026, 11:23:42 PM
2026-05-15$10.005/15/2026, 11:32:13 PM
2026-06-18NextUpdated$10.005/20/2026, 11:29:34 PM
2026-09-18$9.005/20/2026, 11:29:34 PM
2026-12-18$10.005/20/2026, 11:29:34 PM
2027-01-15$6.005/20/2026, 11:29:34 PM
Selected expiration: 2026-06-18 at max pain $10.00.
PRTA pain by strike for 2026-06-18 expiration
StrikeCall PainPut PainTotal Pain
60315100315100
70241000241000
8100166900167000
92009290093100
109004970050600
118430022000106300
1231250010100322600
136290006300635300
149703002500972800
15131910001319100
16167080001670800
17202500002025000
How to Read Max Pain
Compare pin-risk and strike-pressure across expirations from the latest published close.
What max pain measures

Max pain is the strike where option holders would collectively lose the most at expiration, based on open interest across the listed chain.

How traders use it

It is most useful as a possible pinning zone, especially when spot is already trading near a crowded strike into expiration.

What can break it

Strong directional flows, news, or fast spot moves can overwhelm any pinning tendency, so max pain should support a thesis rather than drive it alone.

The closer you are to expiration, the more useful this becomes as context and the less useful it is as a standalone prediction.