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Prothena (PRTA)

(Delayed Data from NSDQ)

$6.81 USD

6.81
859,928

-0.06 (-0.87%)

Updated Aug 1, 2025 04:00 PM ET

After-Market: $6.80 -0.01 (-0.15%) 7:58 PM ET

Zacks Rank:

This is our short term rating system that serves as a timeliness indicator for stocks over the next 1 to 3 months. How good is it? See rankings and related performance below.

Zacks Rank Definition Annualized Return
1Strong Buy23.75%
2Buy17.82%
3Hold9.58%
4Sell5.28%
5Strong Sell2.61%
S&P50011.30%

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3-Hold of 5     3    

Style Scores:

The Style Scores are a complementary set of indicators to use alongside the Zacks Rank. It allows the user to better focus on the stocks that are the best fit for his or her personal trading style.

The scores are based on the trading styles of Value, Growth, and Momentum. There's also a VGM Score ('V' for Value, 'G' for Growth and 'M' for Momentum), which combines the weighted average of the individual style scores into one score.

  • Value Score A
  • Growth Score A
  • Momentum Score A
  • VGM Score A

Within each Score, stocks are graded into five groups: A, B, C, D and F. As you might remember from your school days, an A, is better than a B; a B is better than a C; a C is better than a D; and a D is better than an F.

As an investor, you want to buy stocks with the highest probability of success. That means you want to buy stocks with a Zacks Rank #1 or #2, Strong Buy or Buy, which also has a Score of an A or a B in your personal trading style.

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D Value F Growth F Momentum F VGM

Industry Rank:

The Zacks Industry Rank assigns a rating to each of the 265 X (Expanded) Industries based on their average Zacks Rank.

An industry with a larger percentage of Zacks Rank #1's and #2's will have a better average Zacks Rank than one with a larger percentage of Zacks Rank #4's and #5's.

The industry with the best average Zacks Rank would be considered the top industry (1 out of 265), which would place it in the top 1% of Zacks Ranked Industries. The industry with the worst average Zacks Rank (265 out of 265) would place in the bottom 1%.

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Bottom 42% (143 out of 246)

Industry: Medical - Biomedical and Genetics

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Key Expected Earnings Data

Report Date Period Ending Zacks Consensus Estimate Earnings ESP
08/04/2025

This is a confirmed date of earnings release. Neither Zacks Investment Research, Inc. nor its Information Providers can guarantee the accuracy, completeness, timeliness, or correct sequencing of any of the Information on the Web site, including, but not limited to Information originated by Zacks Investment Research, Inc, licensed by Zacks Investment Research, Inc. from Information Providers, or gathered by Zacks Investment Research, Inc. from publicly available sources. There may be delays, omissions, or inaccuracies in the Information.


Time: AMC 		6/2025 $-1.11 -9.71%

Earnings Summary

For their last quarter, Prothena (PRTA) reported earnings of -$1.12 per share, missing the Zacks Consensus Estimate of -$0.92 per share. This reflects a negative earnings surprise of 21.74%. Look out for PRTA's next earnings release on August 04, 2025. For the next earning release, we expect the company to report earnings of -$1.11 per share, reflecting a year-over-year decrease of 190.98%.

Earnings History

Research for PRTA

The Zacks Equity Research reports, or ZER for short, are our in-house, independently produced research reports.

The ever popular one-page Snapshot reports are generated for virtually every single Zacks Ranked stock. It's packed with all of the company's key stats and salient decision making information. Including the Zacks Rank, Zacks Industry Rank, Style Scores, the Price, Consensus & Surprise chart, graphical estimate analysis and how a stocks stacks up to its peers.

The detailed multi-page Analyst report does an even deeper dive on the company's vital statistics. In addition to all of the proprietary analysis in the Snapshot, the report also visually displays the four components of the Zacks Rank (Agreement, Magnitude, Upside and Surprise); provides a comprehensive overview of the company business drivers, complete with earnings and sales charts; a recap of their last earnings report; and a bulleted list of reasons to buy or sell the stock. It also includes an industry comparison table to see how your stock compares to its expanded industry, and the S&P 500.

Researching stocks has never been so easy or insightful as with the ZER Analyst and Snapshot reports.

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*BMO: Before Market Open

*AMC: After Market Close

Price & Consensus

Zacks News for PRTA

PRTA FAQs

Prothena Corporation plc (PRTA) has announced they will report their next quarter earnings on August 04, 2025. For the next earning release, we expect the company to report earnings of $-1.11 per share, reflecting a year-over-year decrease of -190.98%.

Prothena Corporation plc has announced they will report their previous quarter earnings after the close of the market on August 04, 2025.

The Zacks Consensus Estimate for Prothena Corporation plc (PRTA) for the quarter ending in June 2025 is $-1.11 a share. We expect Prothena Corporation plc to miss by -9.71%.

In the earnings report for the quarter ending in June 2024, Prothena Corporation plc (PRTA) announced earnings of $1.22 per share versus the Zacks Consensus Estimate of $-1.01 per share, representing a surprise of -220.79%.