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Prothena (PRTA)

(Real Time Quote from BATS)

$6.95 USD

6.95
334,612

+0.14 (2.06%)

Updated Aug 4, 2025 01:08 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.

Zacks Style Scores Education - Learn more about the Zacks Style Scores

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%.

Zacks Rank Education -- Learn more about the Zacks Rank
Zacks Industry Rank Education -- Learn more about the Zacks Industry Rank

Bottom 42% (143 out of 246)

Industry: Medical - Biomedical and Genetics

Zacks News

Zacks Equity Research

What Makes Prothena (PRTA) a New Buy Stock

Prothena (PRTA) has been upgraded to a Zacks Rank #2 (Buy), reflecting growing optimism about the company's earnings prospects. This might drive the stock higher in the near term.

Zacks Equity Research

Prothena (PRTA) Q2 Earnings Benefit From Collaboration Revenues

Prothena (PRTA) records impressive second-quarter earnings as the top line benefits from a $80-million payment from collaboration partner BMY.

Zacks Equity Research

Prothena (PRTA) Q2 Earnings and Revenues Beat Estimates

Prothena (PRTA) delivered earnings and revenue surprises of 220.79% and 487.72%, respectively, for the quarter ended June 2024. Do the numbers hold clues to what lies ahead for the stock?

Zacks Equity Research

Merus N.V. (MRUS) Expected to Beat Earnings Estimates: Can the Stock Move Higher?

Merus (MRUS) possesses the right combination of the two key ingredients for a likely earnings beat in its upcoming report. Get prepared with the key expectations.

Zacks Equity Research

Prothena (PRTA) Expected to Beat Earnings Estimates: What to Know Ahead of Q2 Release

Prothena (PRTA) possesses the right combination of the two key ingredients for a likely earnings beat in its upcoming report. Get prepared with the key expectations.

Zacks Equity Research

Legend Biotech (LEGN) Surges 12.1%: Is This an Indication of Further Gains?

Legend Biotech (LEGN) witnessed a jump in share price last session on above-average trading volume. The latest trend in earnings estimate revisions for the stock doesn't suggest further strength down the road.

Zacks Equity Research

Eli Lilly (LLY) Gets FDA Nod for Alzheimer's Drug Donanemab

Eli Lilly's (LLY) Alzheimer's disease drug, Kisunla (donanemab), wins FDA approval. Kisunla will be the second drug on the market to treat the disease.

Zacks Equity Research

Prothena (PRTA) Moves 9.3% Higher: Will This Strength Last?

Prothena (PRTA) was a big mover last session on higher-than-average trading volume. The latest trend in earnings estimate revisions might help the stock continue moving higher in the near term.

Sanghamitra Saha headshot

Can Eli Lilly ETFs Surge on Approval of Alzheimer's Drug?

On Jun 10, the FDA's Peripheral and Central Nervous System Drugs Advisory Committee (PCNS) voted 11-0, unanimously recommending the approval of Eli Lilly's (LLY) Alzheimer's disease drug, donanemab.

Zacks Equity Research

Alzheimer's in Focus as FDA Panel Endorses Lilly's Donanemab (Revised)

If Eli Lilly's (LLY) donanemab is approved by the FDA, it will become the second drug approved by the FDA to reduce the clinical decline associated with Alzheimer's disease.

Zacks Equity Research

The Zacks Analyst Blog Highlights Biogen, Eli Lilly's, Prothena and AC Immune (Revised)

Biogen, Eli Lilly's, Prothena and AC Immune are included in this Analyst Blog.

Zacks Equity Research

The Zacks Analyst Blog Highlights Biogen, Eli Lilly's, Prothena and AC Immune

Biogen, Eli Lilly's, Prothena and AC Immune are included in this Analyst Blog.

Kinjel Shah headshot

Alzheimer's in Focus as FDA Panel Endorses Lilly's Donanemab

If Eli Lilly's (LLY) donanemab is approved by the FDA, it will become the second drug approved by the FDA to reduce the clinical decline associated with Alzheimer's disease.

Zacks Equity Research

Eli Lilly (LLY) Alzheimer's Drug Donanemab Gets FDA Panel Nod

Eli Lilly (LLY) Alzheimer's disease drug, donanemab, receives Peripheral and Central Nervous System Drugs Advisory Committee (PCNS) recommendation.

Zacks Equity Research

Biogen (BIIB) & Eisai's Leqembi sBLA Gets FDA Acceptance

FDA accepts Biogen's (BIIB) partner Eisai's sBLA for a maintenance intravenous dosing version of Alzheimer's drug Leqembi. The final FDA decision is expected on Jan 25, 2025.

Zacks Equity Research

Why Is Prothena (PRTA) Down 1.5% Since Last Earnings Report?

Prothena (PRTA) reported earnings 30 days ago. What's next for the stock? We take a look at earnings estimates for some clues.

Zacks Equity Research

Prothena (PRTA), Bristol Myers Tie Up for Second Neuro Candidate

Prothena (PRTA) announces that Bristol Myers is exercising its option for the second time, thereby in-licensing exclusive global rights for PRX019 to potentially treat neurodegenerative diseases.

Zacks Equity Research

Prothena (PRTA) Q1 Earnings Miss Estimates on Higher R&D Expenses

Prothena (PRTA) posts a wider-than-expected loss in the first quarter on lower revenues and higher costs.

Zacks Equity Research

Prothena (PRTA) Reports Q1 Loss, Lags Revenue Estimates

Prothena (PRTA) delivered earnings and revenue surprises of -10.74% and 98.67%, respectively, for the quarter ended March 2024. Do the numbers hold clues to what lies ahead for the stock?

Zacks Equity Research

Adaptive Biotechnologies (ADPT) Reports Q1 Loss, Misses Revenue Estimates

Adaptive Biotechnologies (ADPT) delivered earnings and revenue surprises of 5.71% and 0.78%, respectively, for the quarter ended March 2024. Do the numbers hold clues to what lies ahead for the stock?

Zacks Equity Research

Earnings Preview: Prothena (PRTA) Q1 Earnings Expected to Decline

Prothena (PRTA) doesn't possess the right combination of the two key ingredients for a likely earnings beat in its upcoming report. Get prepared with the key expectations.

Zacks Equity Research

J&J (JNJ) to Begin Pharma Q1 Earnings Season: What's in Store?

J&J's (JNJ) Innovative Medicines unit sales are expected to have been driven by drugs like Darzalex and Stelara. Surgical procedure recovery and new products are likely to have driven MedTech sales.

Zacks Equity Research

CHMP to Delay Nod on Biogen (BIIB), Eisai's Alzheimer's Drug

Per Biogen (BIIB)/Eisai, the delay in CHMP recommendation for lecanemab is entirely related to procedural reasons at the EMA and is not related to the companies' regulatory filing.

Zacks Equity Research

Prothena (PRTA) Q4 Earnings Miss Estimates on Higher R&D Expense

Prothena (PRTA) posts a wider-than-expected loss in the fourth quarter on lower revenues and higher costs.

Zacks Equity Research

Arvinas, Inc. (ARVN) Soars 10.0%: Is Further Upside Left in the Stock?

Arvinas, Inc. (ARVN) witnessed a jump in share price last session on above-average trading volume. The latest trend in earnings estimate revisions for the stock doesn't suggest further strength down the road.