PRTA

Prothena Corp Public Ltd Co $8.29 as of 2026-11-02
Model view — historical tendencies for the days ahead, not a forecast
Next 1 day
+0.5%
Next 1 week
-0.7%
Next 1 month
+2.0%
Seasonality
Mildly negative window
Next 30 days (to Dec 3): -0.9% median, 46% of the last 13 years finished up.
20-year seasonality chart →
Mean reversion
Oversold — RSI(2) at 14
RSI(2) under 15 is oversold (this name has historically bounced); over 85 is overbought. Its dip-buy edge in history is -0.13%/day.
Mean-reversion stats →
1-month breakdown — Market · β 0.94 +2.2% · Seasonal tilt -0.2%
$5M/day volume 48% volatility -21% 1-year
52-week range · 14% of the way up · -30% from the high
$7.73$11.80

Earnings Full history →

Next report 2026-11-05 (Thursday, after close, in 2 days) · EPS est. -0.30.

1-day std dev
4.8%
Finished up
47%
Biggest pop
+12.0%
Biggest drop
-8.3%

Standard deviation of the close-to-close move over the last 53 reports. History, not a forecast.

ReportedEst.Actual SurpriseGap Day 1Day 5
2026-08-06 beat -0.38 -0.31 +18.4% -0.5% +2.1% +3.3%
2026-05-07 beat -0.30 0.68 +324.0% +4.6% +2.0% -7.2%
2026-02-19 beat -0.46 -0.46 +0.7% +3.9% -0.1% -4.0%
2025-11-06 miss -0.54 -0.67 -24.6% +4.1% +4.8% -1.5%
2025-08-04 beat -1.79 -1.73 +3.3% +1.3% +1.3% +8.6%
2025-05-08 miss -1.03 -1.12 -8.6% -1.1% +4.6% +1.1%
2025-02-20 miss -1.04 -1.08 -3.7% +4.3% +2.0% +3.7%
2024-11-12 beat -1.18 -1.10 +6.6% +0.0% -0.7% -17.1%
2024-08-08 beat -1.03 1.22 +217.9% +10.0% +4.4% +5.5%
2024-05-08 miss -1.22 -1.34 -10.0% -3.0% -4.5% +1.6%
2024-02-15 miss -1.19 -1.26 -5.8% -0.2% -1.8% -1.2%
2023-11-02 beat -0.34 0.38 +210.6% +10.0% +7.4% -4.7%
2023-08-03 miss -0.97 -1.03 -5.7% +5.4% -7.3% -6.6%
2023-05-04 miss -0.84 -0.89 -5.7% -0.4% +12.0% +3.8%
2023-02-23 beat -0.47 0.12 +125.8% +5.9% +7.1% +6.1%
2022-11-03 miss -0.62 -0.97 -56.7% -6.0% -5.4% -1.4%
2022-08-08 miss -0.53 -0.88 -66.8% +0.5% -8.3% -2.7%
2022-05-05 miss -0.64 -0.78 -22.3% -5.9% +2.7% -9.4%
2022-02-17 miss -0.44 -0.71 -62.8% -4.3% -4.0% -1.3%
2021-11-04 miss 2.24 2.13 -4.7% -2.1% +4.4% +1.3%
2021-08-05 miss 1.17 0.58 -50.2% -0.3% +2.6% +4.5%
2021-05-11 miss -0.49 -0.91 -85.7% -0.1% -4.9% +4.4%
2021-02-11 miss -0.74 -0.77 -3.4% +0.6% -0.2% +47.8%
2020-11-04 miss -0.65 -0.77 -19.2% +0.7% -1.5% -11.3%
2020-08-06 miss -0.59 -0.66 -11.2% -2.2% -1.5% -4.6%
2020-05-06 miss -0.56 -0.59 -5.4% -18.7% -6.0% -6.8%
2020-02-12 beat -0.55 -0.54 +1.8% +3.6% -4.4% -12.1%
2019-11-05 miss -0.46 -0.49 -5.4% -4.8% -4.2% +8.7%
2019-08-06 beat -0.58 -0.40 +31.0% -4.3% -2.4% -11.6%
2019-05-07 beat -0.59 -0.52 +11.0% +1.7% +4.8% -5.8%
2019-02-14 beat -0.89 -0.60 +32.0% +1.7% +3.1% +5.8%
2018-11-06 beat -0.82 -0.70 +14.9% +4.8% +1.6% -13.8%
2018-08-07 beat -1.24 -1.00 +20.0% -4.6% -0.9% -0.5%
2018-05-08 beat -1.34 -1.26 +6.3% -10.5% -4.8% +15.3%
2018-02-14 beat -1.48 -1.24 +16.1% +6.6% +3.7% +11.8%
2017-11-07 beat -1.46 -1.37 +6.1% -6.5% -7.8% -9.6%
2017-08-08 beat -0.81 -0.46 +43.0% +4.2% -4.4% -6.5%
2017-05-09 beat -1.36 -0.99 +27.1% +1.3% +7.3% +6.8%
2017-02-14 miss -1.21 -1.41 -16.5% -5.9% +1.6% +4.5%
2016-11-01 miss -1.18 -1.26 -6.8% -1.6% -5.8% +17.0%
2016-08-02 miss -0.91 -1.18 -29.1% -1.1% +4.8% -1.1%
2016-05-03 miss -0.77 -0.81 -5.7% -2.0% -7.1% -4.9%
2016-02-18 beat -0.81 -0.76 +6.7% -6.4% +8.9% +9.0%
2015-11-02 miss -0.65 -0.73 -12.0% -1.7% +3.8% +7.0%
2015-08-04 miss -0.57 -0.59 -4.3% -2.9% -2.1% -8.3%
2015-05-05 beat -0.62 -0.55 +11.2% +1.8% -1.1% -0.5%
2015-03-05 beat -0.65 -0.48 +26.1% +5.7% -1.7% +7.9%
2014-11-03 beat -0.62 -0.48 +22.7% +0.0% -7.1% +7.0%
2014-08-04 beat -0.13 0.06 +145.6% -0.6% +3.1% +11.4%
2014-05-05 beat 0.76 0.78 +2.2% +0.5% -0.2% -2.9%
2014-03-06 miss -0.42 -0.52 -22.8% -0.2% +0.3% +3.5%
2013-11-12 beat -0.66 -0.55 +17.0% -0.7% +6.0% +2.5%
2013-08-12 miss -0.54 -0.64 -18.5% +0.7% -1.6% +6.1%

Not investment advice.