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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%26.44%22.96%5.80%20.33%
24.47% Insiders
22.96% Other Institutional Investors
5.80% ETFs
20.33% Public Companies and
Individual Investors
The ownership structure of Prothena (PRTA) stock is a mix of institutional, retail, and individual investors. Approximately 55.20% of the company’s stock is owned by Institutional Investors, 24.47% is owned by Insiders, and 20.33% 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 49.40% of the company’s stock is owned by Institutional Investors, 24.47% is owned by Insiders, and 5.80% 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%42,755,044
4,183,812Institution7.77%33,721,525
4,036,140Insider7.50%32,531,288
3,880,162Institution7.21%31,274,106
3,168,827Insider5.89%25,540,746
1,706,248Institution3.17%13,752,359
719,393Institution1.34%5,798,308
684,374Institution1.27%5,516,054
643,917Institution1.20%5,189,971
605,375Institution1.12%4,879,323

Top Mutual Fund Holders

Holder
# of Shares
Type
% Holding
Value
4,183,812Institution7.77%33,721,525
3,880,162Institution7.21%31,274,106
684,374Institution1.27%5,516,054
643,917Institution1.20%5,189,971
605,375Institution1.12%4,879,323
583,788Institution1.08%4,705,331
523,503Institution0.97%4,219,434
486,109Institution0.90%3,918,039
406,354Institution0.75%3,275,213
321,955Institution0.60%2,594,957

Top ETF Holders

Holder
# of Shares
Type
% Holding
Value
970,117Institution1.80%7,819,143
415,874Institution0.77%2,857,054
306,943Institution0.57%2,473,961
258,777Institution0.48%2,085,743
182,894Institution0.34%1,256,482
176,852Institution0.33%1,443,112
97,748Institution0.18%797,624
92,227Institution0.17%752,572
91,463Institution0.17%628,351
62,464Institution0.12%509,706

FAQ

Who Owns Prothena (PRTA)?
According to the latest TipRanks data, approximately 22.96% of the company's stock is held by institutional investors, 24.47% is held by insiders, and 20.33% is held by retail investors.
    What percentage of Prothena (PRTA) stock is held by institutional investors?
    According to the latest TipRanks data, approximately 22.96% 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 20.33% 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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