PRTA Shares Outstanding History



Below is a table of the PRTA shares outstanding history going back to 12/18/2012:

Date PRTA Shares Outstanding
12/18/201217.70M
2/28/201317.68M
4/30/201317.68M
7/31/201317.68M
10/31/201321.86M
3/3/201421.90M
4/25/201421.90M
7/25/201427.38M
10/24/201427.38M
2/27/201527.40M
4/24/201531.29M
7/24/201531.38M
10/23/201531.52M
2/12/201634.34M
4/22/201634.35M
7/22/201634.40M
10/21/201634.49M
2/10/201735.03M
4/21/201738.02M
7/21/201738.28M
10/20/201738.45M
2/9/201838.54M
4/20/201839.82M
7/20/201839.84M
10/26/201839.86M
3/11/201939.86M
4/30/201939.86M
7/19/201939.90M
10/25/201939.90M
2/21/202039.91M
5/1/202039.91M
7/31/202039.91M
10/30/202039.92M
2/18/202139.99M
5/4/202144.18M
7/29/202145.05M
10/28/202146.59M
2/18/202246.69M
4/28/202246.81M
7/29/202246.92M
10/26/202248.38M
2/17/202352.56M
4/28/202352.75M
7/28/202353.54M
10/26/202353.67M
2/15/202453.72M

Also see: PRTA Market Cap History
PRTA YTD Return
PRTA Historical Shares Outstanding:
+10.45% CAGR
PRTA Historical Shares Outstanding: +10.45% CAGR

Mouse over chart for data details
12/18/2012 ...2/15/2024
Prothena is a biotechnology company engaged in the protein dysregulation and a pipeline of investigational therapeutics with the potential to change the course of devastating rare neurodegenerative and peripheral amyloid diseases. Co. is developing a pipeline of therapeutic candidates for a number of indications and targets for which its ability to integrate scientific insights around neurological dysfunction and the biology of misfolded proteins can be utilized. Co.'s wholly-owned programs include birtamimab for the treatment of AL amyloidosis, a portfolio of programs for the treatment of Alzheimer's disease including PRX012 that targets Amyloid beta and a dual Amyloid beta-Tau vaccine. We show 46 historical shares outstanding datapoints in our coverage of PRTA's shares outstanding history.

Understanding the changing numbers of PRTA shares outstanding — and comprehending the concept of differing number of shares outstanding in general comparing companies like PRTA versus peers — is critical for investors. Many "beginner" or "novice" investors will look at one stock trading at a price of $10 per share and another trading at a price of $20 per share and think the latter company is worth twice as much. Of course, that is a completely meaningless comparison without also knowing how many shares outstanding there are for each of the two companies. Furthermore, via issuance of new shares over time, or the repurchase of existing shares, the number of shares outstanding can fluctuate over the course of history. With this page we aim to empower investors researching PRTA by allowing them to research PRTA shares outstanding history as well as any other stock in our coverage universe.
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Prothena (PRTA) is categorized under the Healthcare sector; to help you further research historical shares outstanding numbers, below are some other companies in the same sector:

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