NASDAQ · PRTA

Prothena Corporation plc Ordinary Shares

Healthcare · Biotechnology

$8.21

Down-$0.08 (-0.97%)

Updated Nov 4, 2026, 10:20 AM

SID Score

3.3/10

Composite research score

Smart Money

—

Institutional and insider signal

Price performance · PRTA

PRTA price history

1M range · 21 trading sessions · Daily adjusted prices

Prices through Nov 3, 2026

Daily close

View OHLC price history

PRTA OHLC price history, latest 40 sessions
Date	Open	High	Low	Close	Volume
Nov 3, 2026	$8.30	$8.49	$8.15	$8.21	289.88K
Nov 2, 2026	$8.45	$8.49	$8.105	$8.29	462.46K
Oct 30, 2026	$8.79	$8.90	$8.345	$8.47	452.3K
Oct 29, 2026	$9.10	$9.26	$8.75	$8.88	370.07K
Oct 28, 2026	$8.64	$9.22	$8.605	$9.10	752K
Oct 27, 2026	$8.40	$8.85	$8.35	$8.81	654.35K
Oct 26, 2026	$8.34	$8.49	$8.21	$8.40	594.55K
Oct 23, 2026	$8.18	$8.268	$7.93	$8.20	386.15K
Oct 22, 2026	$8.01	$8.285	$7.96	$8.25	381.83K
Oct 21, 2026	$8.47	$8.54	$8.01	$8.03	461.39K
Oct 20, 2026	$8.55	$8.645	$8.45	$8.50	529.03K
Oct 19, 2026	$8.39	$8.57	$8.31	$8.48	361.13K
Oct 16, 2026	$8.58	$8.62	$8.24	$8.35	670.26K
Oct 15, 2026	$8.54	$8.65	$8.44	$8.50	358.38K
Oct 14, 2026	$8.28	$8.56	$8.19	$8.37	620.03K
Oct 13, 2026	$8.45	$8.55	$8.20	$8.36	573.31K
Oct 12, 2026	$8.81	$8.81	$8.395	$8.43	489.76K
Oct 9, 2026	$8.57	$9.305	$8.50	$8.84	931.63K
Oct 8, 2026	$8.43	$8.81	$8.36	$8.61	642.41K
Oct 7, 2026	$7.93	$8.63	$7.88	$8.48	690.41K
Oct 6, 2026	$8.28	$8.28	$7.80	$8.02	510.61K