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Prothena (PRTA)
NASDAQ:PRTA
US Market

Prothena (PRTA) Ownership - Who Owns Prothena?

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Prothena (PRTA) Ownership Overview

13.43%30.50%0.14%8.25%47.67%
13.43% Insiders
0.14% Other Institutional Investors
8.25% ETFs
47.67% Public Companies and Individual Investors
The ownership structure of Prothena (PRTA) stock is a mix of institutional, retail, and individual investors. Approximately 38.90% of the company’s stock is owned by Institutional Investors, 13.43% is owned by Insiders, and 47.67% 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 30.65% of the company’s stock is owned by Institutional Investors, 13.43% is owned by Insiders, and 8.25% 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

Top Shareholders

Holder
# of Shares
Type
% Holding
Value
5,304,596Insider9.85%38,086,999
4,219,512Institution7.84%30,296,096
4,036,140Insider7.50%28,979,485
3,882,601Institution7.21%27,877,075
3,168,827Insider5.89%22,752,178
2,137,590Institution3.97%15,347,896
1,890,001Institution3.51%13,570,207
961,062Institution1.79%6,900,425
813,917Institution1.51%5,843,924
638,735Institution1.19%4,586,117

Top Mutual Fund Holders

Holder
# of Shares
Type
% Holding
Value
4,219,512Institution7.84%30,296,096
3,882,601Institution7.21%27,877,075
1,890,001Institution3.51%13,570,207
813,917Institution1.51%5,843,924
638,735Institution1.19%4,586,117
568,548Institution1.06%4,082,175
555,226Institution1.03%3,986,523
465,682Institution0.87%3,343,597
433,876Institution0.81%3,115,230
396,636Institution0.74%2,847,846

Top ETF Holders

Holder
# of Shares
Type
% Holding
Value
1,093,927Institution2.03%7,854,396
598,939Institution1.11%5,510,239
524,863Institution0.98%3,524,455
267,727Institution0.50%1,922,280
226,360Institution0.42%1,625,265
213,916Institution0.40%1,968,027
178,815Institution0.33%1,200,743
157,539Institution0.29%1,131,130
110,013Institution0.20%1,012,120
97,748Institution0.18%656,378

FAQ

Who Owns Prothena (PRTA)?
According to the latest TipRanks data, approximately 0.14% of the company's stock is held by institutional investors, 13.43% is held by insiders, and 47.67% is held by retail investors.
    What percentage of Prothena (PRTA) stock is held by institutional investors?
    According to the latest TipRanks data, approximately 0.14% 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 47.67% 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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