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Prothena (PRTA) Stock Chart & Stock Price History

Prothena logo
$6.55 -0.27 (-3.96%)
Closing price 05/22/2025 04:00 PM Eastern
Extended Trading
$6.90 +0.35 (+5.27%)
As of 05:31 AM Eastern
Extended trading is trading that happens on electronic markets outside of regular trading hours. This is a fair market value extended hours price provided by Polygon.io. Learn more.

Prothena Stock Price Performance

The Prothena (PRTA) stock chart highlights key performance trends across multiple timeframes. Over the last 12 months, the stock's price has decreased 67.41%, with a year-to-date return of -52.71%. In the past month, the stock has decreased 31.70%, reflecting recent market activity.

As of the latest close, Prothena traded at $6.55 with a market cap of $352.57 million and volume of 933,156 shares. Five years ago, the stock traded at $11.88, representing a 44.87% decrease over that period. At the time, it had a market cap of $481.51 million and a volume of 191,148 shares.

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5 Day
Performance
-8.77%
1 Month
Performance
-31.70%
3 Month
Performance
-57.90%
Year-To-Date
Performance
-52.71%
1 Year
Performance
-67.41%
5 Year
Performance
-44.87%

PRTA Stock Chart for Friday, May, 23, 2025

Prothena Stock Price History

DateOpening PriceClosing PriceHighLowVolumeMarket Capitalization
05/22/2025$6.82$6.55
-3.96%
$6.88$6.52933,156 shs$352.57 million
05/21/2025$7.29$6.82
-6.45%
$7.24$6.621.14 million shs$367.10 million
05/20/2025$7.40$7.29
-1.49%
$7.59$7.231.25 million shs$392.40 million
05/19/2025$7.18$7.40
+3.06%
$7.41$7.00758,460 shs$398.32 million
05/16/2025$6.72$7.18
+6.85%
$7.33$6.651.17 million shs$386.48 million
05/15/2025$6.89$6.72
-2.47%
$6.92$6.471.12 million shs$361.72 million
05/14/2025$7.59$6.89
-9.22%
$7.70$6.821.88 million shs$370.87 million
05/13/2025$7.61$7.59
-0.26%
$7.76$7.412.21 million shs$408.55 million
05/12/2025$7.43$7.61
+2.42%
$8.05$7.171.42 million shs$409.62 million
05/09/2025$7.10$7.43
+4.65%
$8.08$6.921.66 million shs$399.94 million
05/08/2025$7.29$7.10
-2.61%
$7.44$7.011.71 million shs$382.17 million
05/07/2025$7.35$7.29
-0.82%
$7.52$7.172.00 million shs$392.40 million
05/06/2025$8.08$7.35
-9.03%
$8.80$7.354.16 million shs$395.63 million
05/05/2025$8.50$8.08
-4.94%
$8.75$8.003.01 million shs$434.92 million
05/02/2025$8.72$8.50
-2.52%
$9.50$8.255.55 million shs$457.53 million
05/01/2025$9.20$8.72
-5.22%
$9.27$8.581.94 million shs$469.37 million
04/30/2025$9.69$9.20
-5.06%
$9.58$9.17989,315 shs$495.21 million
04/29/2025$9.65$9.69
+0.41%
$9.77$9.44445,954 shs$521.58 million
04/28/2025$9.70$9.65
-0.52%
$9.81$9.37573,554 shs$519.43 million
04/25/2025$9.65$9.70
+0.52%
$9.84$9.39490,570 shs$522.12 million
04/24/2025$9.59$9.65
+0.63%
$9.98$9.45385,916 shs$519.43 million
04/23/2025$9.54$9.59
+0.52%
$10.07$9.44836,739 shs$516.20 million
04/22/2025$9.30$9.54
+2.58%
$9.65$9.211.08 million shs$513.51 million

This page (NASDAQ:PRTA) was last updated on 5/23/2025 by MarketBeat.com Staff
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