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Prothena Corporation plc
PRTA
$8.29
Name : Prothena Corporation plc
Sector : Healthcare
Industry: Biotechnology
Mark. Cap: $425,583,520.00
EPSttm : -0.82
finviz dynamic chart for PRTA
Prothena Corporation plc
$8.29
0.36%
$0.03
PRTA — Price & Float Short
—— Fair value ★ EPS beat ★ EPS miss —— Target Price
Float Short %

Float Short %

19.12

Margin Of Safety %

Put/Call OI Ratio

0.54

EPS Next Q Diff

1.06

EPS Last/This Y

5.18

EPS This/Next Y

-2.17

Price

8.3

Target Price

19.6

Analyst Recom

2.17

Performance Q

-17.27

Upside

-230.2%

Beta

-0.3

Ticker: PRTA




19 items of 1

DateSymbolLatestP/C OIP/C VolTotal OI
2026-08-28PRTA9.350.540.0113136
2026-08-31PRTA9.350.540.1113149
2026-09-02PRTA9.680.530.0213170
2026-09-03PRTA9.60.530.0013211
2026-09-04PRTA9.750.530.0013221
2026-09-08PRTA9.530.53999.9913257
2026-09-09PRTA9.310.531.5013293
2026-09-10PRTA9.020.531.0013293
2026-09-11PRTA8.930.530.3313298
2026-09-14PRTA8.860.530.2513302
2026-09-15PRTA8.330.530.0013291
2026-09-16PRTA8.230.53999.9913301
2026-09-17PRTA8.380.530.0013308
2026-09-18PRTA8.550.530.0013309
2026-09-21PRTA8.510.550.016940
2026-09-22PRTA8.990.550.006954
2026-09-23PRTA8.680.530.007149
2026-09-24PRTA8.340.5313.297150
2026-09-25PRTA8.30.540.007257
DateSymbolLatestP/C OIP/C VolTotal OI
19 items Current Page1 of 1




19 items of 1

DateTickerPriceCurrent Quarter Growth EstimateEBIT EstimationAverage EPS Estimate Current Year
2026-08-28PRTA9.3543.3- 0.65
2026-08-31PRTA9.3443.3- 0.65
2026-09-01PRTA9.6143.3- 0.65
2026-09-02PRTA9.6943.3- 0.65
2026-09-03PRTA9.6043.3- 0.65
2026-09-04PRTA9.8243.3- 0.65
2026-09-08PRTA9.5443.3- 0.65
2026-09-10PRTA9.0343.3- 0.65
2026-09-11PRTA8.9343.3- 0.65
2026-09-14PRTA8.8543.3- 0.65
2026-09-15PRTA8.3543.3- 0.65
2026-09-16PRTA8.3543.3- 0.65
2026-09-17PRTA8.4543.3- 0.65
2026-09-18PRTA8.5643.3- 0.65
2026-09-21PRTA8.5243.3- 0.65
2026-09-22PRTA8.9843.3- 0.65
2026-09-23PRTA8.6843.3- 0.65
2026-09-24PRTA8.3443.3- 0.65
2026-09-25PRTA8.3043.3- 0.65
DateTickerPriceCurrent Quarter Growth EstimateEBIT EstimationAverage EPS Estimate Current Year
19 items Current Page1 of 1




19 items of 1

DateTickerInsider TransactionsInstitutional TransactionsFloat Short
2026-08-28PRTA6.870.6819.05
2026-08-31PRTA6.870.6919.05
2026-09-01PRTA6.870.6919.05
2026-09-02PRTA6.870.6919.05
2026-09-03PRTA6.870.6919.05
2026-09-04PRTA7.350.6919.05
2026-09-08PRTA7.350.7819.05
2026-09-09PRTA7.350.7819.05
2026-09-10PRTA7.160.7819.12
2026-09-11PRTA7.160.7819.01
2026-09-14PRTA7.160.7819.01
2026-09-15PRTA7.160.7819.01
2026-09-16PRTA7.160.7819.01
2026-09-17PRTA7.160.7819.01
2026-09-18PRTA7.160.7819.01
2026-09-21PRTA7.160.7819.01
2026-09-23PRTA8.920.7819.01
2026-09-24PRTA8.920.7819.01
2026-09-25PRTA8.920.7819.12
DateTickerInsider TransactionsInstitutional TransactionsFloat Short
19 items Current Page1 of 1

Last Quarter Act. EPS​

-0.32

Avg. EPS Est. Current Quarter

-0.38

Avg. EPS Est. Next Quarter

0.74

Insider Transactions

8.92

Institutional Transactions

0.78

Beta

-0.3

Average Sales Estimate Current Quarter

9

Average Sales Estimate Next Quarter

21

Fair Value

Quality Score

27

Growth Score

27

Sentiment Score

36

Actual DrawDown %

89.6

Max Drawdown 5-Year %

-94.2

Target Price

19.6

P/E

Forward P/E

PEG

P/S

7.8

P/B

1.5

P/Free Cash Flow

EPS

-0.83

Average EPS Est. Cur. Y​

0.65

EPS Next Y. (Est.)

-1.52

Target Price Estimates Raised

Target Price Estimates Lowered

Profit Margin

-80.67

Relative Volume

0.97

Return on Equity vs Sector %

-41.6

Return on Equity vs Industry %

-22

EPS 1 7Days Diff

EPS 1 30Days Diff

0.01

EBIT Estimation

◆ PRTA Healthcare
$8.29
📉
Swing / Pullback
Buy the dip on strong trends
N/A
0 /100
WEAK
Trend
20/20
Pullback
21/25
Volume
7/15
Valuation
12/20
TP/AR
1/10
Options
7/10
RSI
39.6
Range 1M
9.5%
Sup Dist
1.6%
🚀
Momentum Growth
Ride accelerating trends
N/A
32 /100
WEAK
Momentum
7/25
Growth
16/30
Estimates
0/20
Inst/Vol
4/15
Options
5/10
EPS Yr
102.4%
EPS NY
-943.9%
52W%
15.2%
💎
Long-Term Value
Quality companies, undervalued
N/A
0 /100
WEAK
🟢 BUY +136.4% upside
Quality
7/30
Valuation
16/30
Growth
12/25
Stability
9/10
LT Trend
4/5
Upside
+136.4%
Quality
27
PRTA — P/E HistoricalBiotechnology
Prothena Corporation plc
Sector: Healthcare
Industry: Biotechnology
Employees: 67
Prothena Corporation plc, a late-stage clinical biotechnology company, focuses on discovery and development of novel therapies to treat diseases caused by protein dysregulation. Its product pipeline includes Prasinezumab, an investigational humanized monoclonal antibody which is in Phase 3 clinical trial for the treatment of parkinson's disease and other synucleinopathies. The company also develops Coramitug, an investigational antibody, which is in Phase 3 clinical trial for the treatment of transthyretin amyloidosis; BMS-986446, an anti-tau antibody which is in Phase 2 clinical trial to treat Alzheimer's disease; PRX019, an investigational antibody which is in Phase 1 clinical trial for the treatment of neurodegenerative diseases; and PRX123, a Dual Aß-Tau Vaccine, which is in preclinical trial for treating Alzheimer's disease. In addition, it develops discovery- and late-preclinical-stage programs include TDP-43 CYTOPE for the treatment of amyotrophic lateral sclerosis; PRX012, a next-generation anti-Aß antibody which is in phase 1 clinical trial to treat Alzheimer's disease; and PRX012-TfR, a preclinical program for the treatment of Alzheimer's disease. It has a license, development, and commercialization agreement with F. Hoffmann-La Roche Ltd. and Hoffmann-La Roche Inc. to develop and commercialize antibodies that target a-synuclein, including prasinezumab; and master collaboration agreement with Bristol Myers Squibb to develop and commercialize antibodies targeting tau, TDP-43. Prothena Corporation plc was incorporated in 2012 and is based in Dublin, Ireland.
PRTA

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