ATLASProthena (PRTA) earnings date: Nov 5, 2026
Prothena (PRTA) reports earnings for the quarter ended Sep 30, 2026 on Thu, Nov 5, 2026, after the close. Analysts expect EPS of -$0.38.
Source: company filings and exchange data · Updated Nov 2, 2026
ATLAS view on PRTA
| Last price | $8.15 (-3.8%) |
|---|---|
| Normal 1-day range (±1σ) | ±3.1% |
| Earnings beat history | Beat the EPS estimate in 4 of the last 5 reports |
These figures come from the same calibrated model and valuation as the Prothena stock page. They describe an ordinary period, not the earnings reaction itself, which is usually wider and can go either way.
Prothena reports on Nov 5, 2026. One email the day before, with ATLAS’s read on Prothena. You can switch it off at any time.
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PRTA earnings at a glance
| Next report (confirmed) | Thu, Nov 5, 2026 |
|---|---|
| Time | After the close |
| Period | Quarter ended Sep 30, 2026 |
| EPS estimate | -$0.38 |
| Last report | Aug 6, 2026 · Beat |
| Beat rate (last 5 reports) | 4 of 5 (80%) |
| Average EPS surprise | +77.3% |
| Average move around a report | ±2.4% (last 5) |
| Sector | Healthcare · Biotechnology |
Prothena earnings history: last 5 reports
Prothena last reported on Aug 6, 2026: EPS of -$0.31 against an estimate of -$0.38 (+18.4% surprise), a beat.
| Report date | EPS est. | EPS actual | Surprise | Result | Move* |
|---|---|---|---|---|---|
| Aug 6, 2026 | -$0.38 | -$0.31 | +18.4% | Beat | +3.2% |
| Jul 16, 2026 | $1.10 | $1.17 | +6.4% | Beat | +2.7% |
| May 7, 2026 | -$0.30 | $0.68 | +326.7% | Beat | -4.0% |
| Mar 13, 2026 | $0.05 | $0.07 | +40.0% | Beat | -1.5% |
| Feb 23, 2026 | $0.42 | $0.40 | -4.8% | Miss | -0.6% |
*Move: change in the closing price from the last close before the report day to the close the day after it, so it captures the reaction whether the company reported before the open or after the close.
Get the full ATLAS analysis for PRTA
See the fair value, the probability range and the earnings history of Prothena on its ATLAS page.
Prothena (PRTA) stock analysisPlans from €3.99 a month.
Prothena earnings: frequently asked questions
When does Prothena (PRTA) report earnings?
Prothena is scheduled to report on Thursday, November 5, 2026, after the close. ATLAS only shows a confirmed date when the company or the exchange data provides one; check the investor relations page for the call details.
What is the EPS estimate for PRTA?
The consensus EPS estimate for the quarter ended Sep 30, 2026 is -$0.38 per share (USD). Estimates can change before the report.
How often does PRTA beat earnings estimates?
Of its last 5 reports with a recorded result, Prothena beat the EPS estimate 4 times; the average surprise was +77.3%. Past results do not predict the next one.
How much does PRTA move around earnings?
Over its last 5 reports the stock moved an average of 2.4% (absolute, from the close before the report day to the close after it), and finished higher 2 of 5 times.
Did Prothena beat earnings estimates last quarter?
Prothena last reported on Aug 6, 2026: EPS of -$0.31 against an estimate of -$0.38 (+18.4% surprise), a beat.
How much does PRTA usually move in a day?
On a normal trading day the ATLAS model puts PRTA’s one-day range at about ±3.1%, with a 50% chance of closing higher. This is not an options-implied earnings move; earnings days are usually wider.
Also reporting on Thu, Nov 5, 2026
Educational information, not investment advice. Disclaimer