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Prothena Corp (PRTA)

Prothena Corp (PRTA)
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Fundamentals

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  • Market Capitalization, $K 530,793
  • Shares Outstanding, K 53,833
  • Annual Sales, $ 9,680 K
  • Annual Income, $ -244,090 K
  • EBIT $ -215 M
  • EBITDA $ -211 M
  • 60-Month Beta -0.33
  • Price/Sales 55.76
  • Price/Cash Flow N/A
  • Price/Book 1.92

Options Overview Details

View History
  • Implied Volatility 78.24% (-26.70%)
  • Historical Volatility 46.94%
  • IV Percentile 14%
  • IV Rank 10.66%
  • IV High 339.95% on 11/19/25
  • IV Low 47.00% on 12/17/25
  • Expected Move (DTE 13) 0.64 (6.47%)
  • Put/Call Vol Ratio 0.00
  • Today's Volume 1
  • Volume Avg (30-Day) 231
  • Put/Call OI Ratio 0.63
  • Today's Open Interest 7,250
  • Open Int (30-Day) 6,374
  • Expected Range 9.22 to 10.50

Analyst Rating / Earnings Estimates

Current Rating
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Moderate Buy
Based on 8 analysts offering recommendations.
Earnings Estimates - Current Qtr 03/31/26
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  • Average Estimate $-0.37
  • Number of Estimates 4
  • High Estimate $-0.23
  • Low Estimate $-0.54
  • Prior Year $-1.12
  • Growth Rate Est. (year over year) +66.96%

Price Performance

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Period Period Low Period High Performance
1-Month
8.38 +17.70%
on 03/19/26
10.27 -3.99%
on 03/10/26
+0.46 (+4.89%)
since 03/02/26
3-Month
8.19 +20.32%
on 02/20/26
10.53 -6.36%
on 01/23/26
+0.66 (+7.17%)
since 01/02/26
52-Week
4.32 +128.24%
on 05/28/25
11.84 -16.72%
on 04/03/25
-2.28 (-18.78%)
since 04/02/25

Most Recent Stories

More News
Prothena Partners Present Data Supporting Next Generation Treatments for Parkinson’s and Alzheimer’s Disease at AD/PD™ 2026

Prothena Corporation plc (NASDAQ:PRTA), a late-stage clinical biotechnology company with a robust pipeline of investigational therapeutics built on protein dysregulation expertise, today announced partner...

PRTA : 9.86 (-1.69%)
Prothena Announces Achievement of $50 Million Clinical Milestone Payment from Novo Nordisk Related to Ongoing Phase 3 Clinical Trial for Coramitug (Formerly PRX004) in ATTR Amyloidosis with Cardiomyopathy

Coramitug is a potential first-in-class amyloid depleter antibody for the treatment of ATTR amyloidosis with cardiomyopathy 1-3 Prothena has now earned $150 million...

PRTA : 9.86 (-1.69%)
Prothena Announces up to $100 Million Share Repurchase Plan

Prothena Corporation plc (NASDAQ:PRTA), a late-stage clinical biotechnology company with a robust pipeline of investigational therapeutics built on protein dysregulation expertise, today announced that...

PRTA : 9.86 (-1.69%)
Prothena: Q4 Earnings Snapshot

Prothena: Q4 Earnings Snapshot

PRTA : 9.86 (-1.69%)
Prothena Reports Fourth Quarter and Full Year 2025 Financial Results, and Provides Financial Guidance and Business Highlights

Net cash used in operating and investing activities was $23.3 million and $163.7 million for the fourth quarter and full year of 2025, respectively; quarter-end cash and restricted cash position was $308.4...

PRTA : 9.86 (-1.69%)
Prothena to Report Fourth Quarter and Full Year 2025 Financial Results on February 19, 2026

Prothena Corporation plc (NASDAQ:PRTA), a late-stage clinical biotechnology company with a robust pipeline of investigational therapeutics built on protein dysregulation expertise, today announced that...

PRTA : 9.86 (-1.69%)
Prothena Announces Board of Directors Update

Prothena Corporation plc (NASDAQ:PRTA), a late-stage clinical biotechnology company with a robust pipeline of investigational therapeutics built on protein dysregulation expertise, today announced that...

PRTA : 9.86 (-1.69%)
Prothena Announces Poster Presentation on its TDP-43 CYTOPE® Program at Neuroscience 2025

TDP-43 CYTOPE ® preclinical data demonstrates the potential of Prothena’s CYTOPE technology as a novel modality for delivering large molecules into cells, enabling precise targeting...

PRTA : 9.86 (-1.69%)
Prothena Highlights Phase 2 Data for Coramitug (Formerly PRX004) Published in Circulation, Official Journal of AHA

Novo Nordisk’s Phase 2 data for coramitug supports ongoing Phase 3 CLEOPATTRA clinical trial in patients with ATTR amyloidosis with cardiomyopathy Coramitug is being developed by Novo...

PRTA : 9.86 (-1.69%)
Prothena: Q3 Earnings Snapshot

Prothena: Q3 Earnings Snapshot

PRTA : 9.86 (-1.69%)

Business Summary

Prothena Corp. plc, being a clinical-stage neuroscience company, focused on the development of novel therapeutic therapies for life-threatening diseases. Its wholly owned programs include birtamimab for the potential treatment of AL amyloidosis, PRX004 for the potential treatment of ATTR amyloidosis...

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Key Turning Points

3rd Resistance Point 10.69
2nd Resistance Point 10.39
1st Resistance Point 10.12
Last Price 9.86
1st Support Level 9.55
2nd Support Level 9.25
3rd Support Level 8.98

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52-Week High 11.84
Last Price 9.86
Fibonacci 61.8% 8.97
Fibonacci 50% 8.08
Fibonacci 38.2% 7.19
52-Week Low 4.32

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