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Stocks
Prothena Corporation plc
PRTA

PRTA Prothena Corporation plc

Prothena Corporation plc · NASDAQ
Market Closed
8.93
▼ ⁦-1.00%⁩ (-0.09)
Market Cap$467.5M
Beta-0.35
52w Low52w High
7.7311.80
Last Week
⁦-7.84%⁩
Last Month
⁦+4.08%⁩
Last 3 Months
⁦-10.97%⁩
Last Year
⁦+6.56%⁩
EL7 Factor Analysis
How we score this
Overall23
Poor — bottom quartile of the marketSucker StockF 2/9Better than 23% of Market stocks, per EL7's model
FactorScoreDistributionValueAvgRank
▸
Valuation
4
—17.8xBottom tier
▸
Growth
67
—7.1%Top tier
▸
Quality
39
—4.5%Bottom tier
▸
Safety
96
—2.6xTop tier
▸
Capital Return
34
—2.12%Bottom tier
▸
Momentum
46
-3.2%▼2.9%Around median
▸
Sentiment
90
4▲3Top tier

Frequently Asked Questions

What is Prothena Corporation plc stock?▼

Prothena Corporation plc is a publicly traded stock representing ownership in the company, giving holders rights to dividends and voting.

How can I invest in Prothena Corporation plc?▼

You can buy Prothena Corporation plc shares through a licensed brokerage. Research the company's financials before investing.

What are the key metrics for evaluating Prothena Corporation plc?▼

Key metrics include Price-to-Earnings (P/E) ratio, Return on Equity (ROE), revenue growth, and net profit margin.

Does Prothena Corporation plc pay dividends?▼

Dividend policies vary by company. Check the dividends section on the stock page for the payout history.

What are the risks of investing in Prothena Corporation plc?▼

Risks include market volatility, sector-specific risks, regulatory changes, and company financial performance. Diversification helps reduce risk.

Fair Value
Low confidenceCurrent price$8.93
Analyst target · 3 analysts
$25
—
Range ⁦$19–$30⁩
vs
DCF (estimate)
N/A (negative FCF)

Estimates — analyst targets and a simplified DCF, not investment advice.

Compare in the screener

AI analysis from the earnings call, financials and news

Analyst Consensus

This section combines price targets, revision history, analyst coverage changes, and an AI summary of what changed on the Street.

Price Target· 3 analysts setting price target
$24.50
⁦+174.4%⁩
Current Price $8.93·Median $24.50
Low
$19.00
High
$30.00
Current price
$8.93
Average target
$24.50
Street summary

Prothena (PRTA) Price Target Revision Analysis

Bullish tilt

Prothena stock has seen a strong upward revision in analyst expectations over the past thirty days, with the average price target jumping from $19 to $24.5, representing an increase of 28.95%. This optimism is supported by the reaffirmation of "Buy" ratings by UBS and H.C. Wainwright in late July 2026, reflecting high confidence despite the significant price gap between the current price (8.86) and the lowest observed price target (19).

As of 2026-08-16
Revisions momentum · 30d
⁦0.0%⁩
Average rating
★ 3.50
Buy
Analyst coverage
6
Buy conviction
50%
Mixed
Target dispersion
123%
Wide
Analyst ratings over time6 analysts rating
2
1
2
1
Strong BuyBuyHoldSellStrong Sell
Rating trend — last 12 months3.57 → 3.50
Recent analyst moves
  • = Reiterate2026-07-24
    UBS
    Buy
  • = Reiterate2026-07-24
    H.C. Wainwright
    Buy
  • = Reiterate2026-05-08
    Citigroup
    Outperform
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