Skip to main content
PRTA logo

Prothena Corporation plc

PRTANASDAQHealthcareBiotechnology

$8.40Today:- (-)1Y −15.49%

As of Oct 26, 2026 close

Market cap
$438.02M
P/E (TTM)
-
Forward P/E
-
Dividend yield
-
52-week range
$7.73$11.80
Volume (live)
-
Avg. volume (3M)
560.20K

Prothena Corporation (PRTA) Historical Stock Prices

Analyze Prothena Corporation (PRTA) historical stock prices with comprehensive OHLC data, adjusted close prices, and daily trading volume. Access interactive price charts and detailed historical price data across multiple timeframes including daily, weekly, monthly, and yearly intervals for complete price history analysis.

Prothena Corporation (PRTA) Interactive Price Chart

Interactive historical price chart showing Prothena Corporation stock price movements and trends across multiple time periods.

Loading chart...

PRTA Historical Price Data Table

Complete historical stock price data with OHLC prices, adjusted close, and daily trading volume. Filter by time interval and date range for detailed price history analysis.

Filter Historical Data

Active filters: 6 Months · Daily127 records
Showing 1-50 of 127
Scroll for more columns
PRTA historical price data table with daily, weekly, monthly, quarterly, and yearly trading intervals. Track Open, High, Low, Close, Adjusted Close prices, and trading volume to analyze price trends, technical patterns, and market activity for comprehensive price history analysis.
DateOpenHighLowCloseAdj CloseVolume
Oct 27, 20268.408.858.358.818.81654.35K
Oct 26, 20268.348.498.218.408.40594.54K
Oct 23, 20268.188.277.938.208.20386.14K
Oct 22, 20268.018.297.968.258.25381.83K
Oct 21, 20268.478.548.018.038.03461.39K
Oct 20, 20268.558.648.458.508.50529.03K
Oct 19, 20268.398.578.318.488.48361.13K
Oct 16, 20268.588.628.248.358.35670.26K
Oct 15, 20268.548.658.448.508.50358.38K
Oct 14, 20268.288.568.198.378.37620.03K
Oct 13, 20268.458.558.208.368.36573.31K
Oct 12, 20268.818.818.398.438.43489.76K
Oct 9, 20268.579.308.508.848.84931.63K
Oct 8, 20268.438.818.368.618.61642.41K
Oct 7, 20267.938.637.888.488.48690.41K
Oct 6, 20268.288.287.808.028.02510.61K
Oct 5, 20268.348.377.918.278.27714.46K
Oct 2, 20268.628.628.358.368.36675.84K
Oct 1, 20268.548.588.358.548.54457.09K
Sep 30, 20268.988.998.378.388.38634.78K
Sep 29, 20268.668.808.598.788.78602.98K
Sep 28, 20268.258.868.078.728.72488.86K
Sep 25, 20268.388.528.198.298.29481.05K
Sep 24, 20268.638.738.288.328.32426.06K
Sep 23, 20268.948.978.668.688.68357.84K
Sep 22, 20268.729.098.708.998.99445.50K
Sep 21, 20268.598.798.468.518.51363.16K
Sep 18, 20268.418.608.258.588.581.83M
Sep 17, 20268.398.568.238.468.46404.76K
Sep 16, 20268.358.508.208.248.24398.34K
Sep 15, 20268.868.868.298.338.33323.44K
Sep 14, 20268.958.998.798.868.86374.87K
Sep 11, 20269.069.148.778.938.93376.27K
Sep 10, 20269.259.268.979.029.02310.91K
Sep 9, 20269.409.509.229.309.30294.56K
Sep 8, 20269.609.679.359.549.54305.44K
Sep 4, 20269.509.879.489.829.82383.93K
Sep 3, 20269.779.789.519.609.60277.06K
Sep 2, 20269.649.759.379.699.69341.06K
Sep 1, 20269.289.639.269.619.61267.67K
Aug 31, 20269.269.409.109.359.35335.15K
Aug 28, 20269.029.488.959.339.33498.12K
Aug 27, 20269.169.248.959.099.09338.92K
Aug 26, 20269.409.409.159.259.25289.04K
Aug 25, 20269.519.829.429.429.42363.71K
Aug 24, 20269.469.499.199.399.39248.12K
Aug 21, 20269.119.529.099.459.45376.04K
Aug 20, 20269.139.148.719.039.03345.97K
Aug 19, 20268.919.348.919.299.29385.54K
Aug 18, 20268.889.008.588.718.71248.56K
Show:
of 127

Source: Daily price history (open, high, low, close and volume). Data as of Oct 27, 2026. Data sources and methodology

Understanding Historical Stock Price Data & OHLC Metrics

Open Price
The price at which the stock opened for trading at the start of the trading session.
High Price
The highest price at which the stock traded during the trading session.
Low Price
The lowest price at which the stock traded during the trading session.
Close Price
The final price when trading closed for the session.
Adjusted Close Price
The closing price adjusted for corporate actions such as dividends, stock splits, and rights offerings. Used for accurate long-term historical price analysis and return calculations.
Volume
The total number of shares traded during the session, indicating trading activity and liquidity.