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Prothena (PRTA)
NASDAQ:PRTA
US Market
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Prothena (PRTA) Ownership - Who Owns Prothena?

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Prothena (PRTA) Ownership Overview

24.47%20.01%0.31%6.08%49.13%
24.47% Insiders
0.31% Other Institutional Investors
6.08% ETFs
49.13% Public Companies and
Individual Investors
The ownership structure of Prothena (PRTA) stock is a mix of institutional, retail, and individual investors. Approximately 26.40% of the company’s stock is owned by Institutional Investors, 24.47% is owned by Insiders, and 49.13% is owned by Public Companies and Individual Investors.
The ownership structure of Prothena (PRTA) stock is a mix of institutional, retail, and individual investors. Approximately 20.32% of the company’s stock is owned by Institutional Investors, 24.47% is owned by Insiders, and 6.08% is owned by Public Companies and Individual Investors.

Recent Insider Trading Activity

Date
Name
Activity
Value
May 06, 2025
xxxxxxxxxxxxx
$50825217
May 02, 2025
xxxxxxxxxxxxx
$2749173

Recent Hedge Fund Trading Activity

Date
Firm
Activity
Value
Jun 30, 2025
xxxxxxxxxxxxx
$206634

Top Shareholders

Holder
# of Shares
Type
% Holding
Value
5,304,596Insider9.85%52,621,592
4,036,140Insider7.50%40,038,509
3,880,162Institution7.21%38,491,207
3,168,827Insider5.89%31,434,764
1,722,167Institution3.20%17,083,897
961,751Institution1.79%9,540,570
809,515Institution1.50%8,030,389
759,125Institution1.41%7,530,520
643,917Institution1.20%6,387,657
605,375Institution1.12%6,005,320

Top Mutual Fund Holders

Holder
# of Shares
Type
% Holding
Value
3,880,162Institution7.21%38,491,207
961,751Institution1.79%9,540,570
759,125Institution1.41%7,530,520
643,917Institution1.20%6,387,657
605,375Institution1.12%6,005,320
523,503Institution0.97%5,193,150
478,637Institution0.89%4,748,079
438,423Institution0.81%4,349,156
405,648Institution0.75%4,024,028
321,955Institution0.60%3,193,794

Top ETF Holders

Holder
# of Shares
Type
% Holding
Value
974,189Institution1.81%9,663,955
457,138Institution0.85%4,461,667
319,127Institution0.59%3,165,740
266,440Institution0.49%2,643,085
206,790Institution0.38%2,086,511
193,299Institution0.36%1,886,598
128,737Institution0.24%1,256,473
97,748Institution0.18%986,277
90,157Institution0.17%909,684
68,480Institution0.13%690,963

FAQ

Who Owns Prothena (PRTA)?
According to the latest TipRanks data, approximately 0.31% of the company's stock is held by institutional investors, 24.47% is held by insiders, and 49.13% is held by retail investors.
    What percentage of Prothena (PRTA) stock is held by institutional investors?
    According to the latest TipRanks data, approximately 0.31% of Prothena (PRTA) stock is held by institutional investors.
      What percentage of Prothena (PRTA) stock is held by retail investors?
      According to the latest TipRanks data, approximately 49.13% of Prothena (PRTA) stock is held by retail investors.
        Who owns the most shares of Prothena (PRTA)?
        Ecor1 Capital, Llc owns the most shares of Prothena (PRTA).
          What is the significance of the ownership structure for a publicly traded company?
          The ownership structure can impact the company's decision making, as large institutional investors may exert influence on the company's management and can also affect the company's stock price with their buying and selling patterns.
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