Prothena Corporation plc
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Prothena Corporation plc (PRTA)

Price-to-Earnings Ratio History

P/E Ratio (TTM)

-5.95

Financial Fundamentals

PRTA • Quarterly Data • 5Y View

Quarterly P/E

QuarterP/E Ratio
2012-03-31-2.94
2012-06-30-3.28
2012-09-30-3.67
2012-12-31-2.23
2013-03-31-3.30
2013-06-30-5.07
2013-09-30-9.20
2013-12-31-12.76
2014-03-3111.74
2014-06-3095.96
2014-09-30-11.50
2014-12-31-10.84
2015-03-31-17.19
2015-06-30-22.18
2015-09-30-15.51
2015-12-31-22.28
2016-03-31-12.72
2016-06-30-7.42
2016-09-30-11.93
2016-12-31-8.70
2017-03-31-14.09
2017-06-30-29.10
2017-09-30-11.83
2017-12-31-7.55
2018-03-31-7.28
2018-06-30-2.42
2018-09-30-5.22
2018-12-31-4.57
2019-03-31-5.56
2019-06-30-6.48
2019-09-30-4.02
2019-12-31-7.33
2020-03-31-4.53
2020-06-30-3.96
2020-09-30-3.24
2020-12-31-3.90
2021-03-31-6.88
2021-06-3020.61
2021-09-307.44
2021-12-31-17.35
2022-03-31-11.72
2022-06-30-7.70
2022-09-30-15.56
2022-12-31116.15
2023-03-31-13.58
2023-06-30-16.61
2023-09-3029.49
2023-12-31-7.23
2024-03-31-4.86
2024-06-304.12
2024-09-30-3.81
2024-12-31-3.22
2025-03-31-2.77
2025-06-30-0.65
2025-09-30-3.59
2025-12-31-5.95

* P/E ratios are calculated using trailing twelve-month (TTM) earnings.