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Implied Movement: Monthly Straddle Tracking History
Get Straddle History:

 
Prothena Corporation plc (PRTA) - NASDAQ Next Earnings Date: OS Estimate: Aug. 5, 2026 AC
OS Projected Window: Aug. 3, 2026 to Aug. 8, 2026
EVR: 3.6
Avg Daily Volume: 460,203    Market Cap: 578.7M
Sector: Healthcare    Short Interest: 13.15
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Days to Next Earnings: 85 Days

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Long Straddle/Strangle Performance
 
Tracking Statistics Available: 50
Earnings Date Pre-ER EVR IMPLIED MOVE APPROACHING EARNINGS Inside or Outside IMPL. Move
POST EARNINGS: At Market Close
Pre-ER Close Position Straddle @Trade Price Implied Move Max Move I/O Closing Move I/O Close Price Straddle @Trade Price Return
May 7, 2026 AC 3.5 $10.52 @$11.00 $0.62
($10.52)
5.64% 12.16% O 1.99% I $10.73 $0.60
( $10.73 )
-3.23%
Feb. 19, 2026 AC 3.5 $9.03 @$9.00 $1.60
($9.03)
17.78% -9.19% I -0.11% I $9.02 $0.55
( $9.02 )
-65.62%
Nov. 6, 2025 AC 3.7 $10.08 @$10.00 Get the OptionSlam Edge ..... become an Insider Member to view the detailed report.
Aug. 4, 2025 AC 3.8 $6.94 @$7.50
May 8, 2025 AC 3.5 $7.10 @$7.50
Feb. 20, 2025 AC 3.6 $15.25 @$15.00
Nov. 12, 2024 AC 3.8 $17.36 @$17.50
Aug. 8, 2024 AC 3.3 $19.68 @$20.00
May 8, 2024 AC 3.3 $23.03 @$22.50
Feb. 15, 2024 AC 3.3 $28.52 @$30.00

 
 
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