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Prothena (PRTA) Institutional Ownership

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$13.01 -0.36 (-2.69%)
Closing price 03/27/2025 04:00 PM Eastern
Extended Trading
$13.00 -0.01 (-0.08%)
As of 03/27/2025 04:24 PM Eastern
Extended trading is trading that happens on electronic markets outside of regular trading hours. This is a fair market value extended hours price provided by Polygon.io. Learn more.
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Institutional Ownership Changes (13F Filings) for Prothena (NASDAQ:PRTA)

Current
Institutional Ownership
Percentage
97.08%
Number of
Institutional Buyers
(last 12 months)
72
Total
Institutional Inflows
(last 12 months)
$112.91M
Number of
Institutional Sellers
(last 12 months)
37
Total
Institutional Outflows
(last 12 months)
$76.20M
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PRTA Institutional Buying and Selling by Quarter

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Prothena Major Shareholders & Ownership History

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Reporting DateMajor Shareholder NameShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails
3/24/2025 Wellington Management Group LLP5,130,876$71.06M0.0%+22.8%9.532%
2/17/2025 UBS AM a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC381,508$5.28M0.0%-27.6%0.709%
2/17/2025 Two Sigma Investments LP38,394$532K0.0%+265.4%0.071%
2/17/2025 Rafferty Asset Management LLC77,672$1.08M0.0%+24.8%0.144%
2/17/2025 ProShare Advisors LLC14,524$201K0.0%+29.5%0.027%
2/17/2025 Prosight Management LP418,122$5.79M1.6%-13.5%0.777%
2/17/2025 Man Group plc77,430$1.07M0.0%+90.7%0.144%
2/17/2025 Millennium Management LLC123,005$1.70M0.0%+9.3%0.229%
2/17/2025 MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.27,269$381K0.0%+6.0%0.051%
2/17/2025 Deutsche Bank AG95,970$1.33M0.0%+195.7%0.178%
2/17/2025 Cresset Asset Management LLC19,434$269K0.0%-20.4%0.036%
2/17/2025 Cary Street Partners Financial LLC12,500$173K0.0%N/A0.023%
2/17/2025 Balyasny Asset Management L.P.38,021$527K0.0%N/A0.071%
2/17/2025 Bank of America Corp DE119,007$1.65M0.0%+45.0%0.221%
2/17/2025 BNP Paribas Financial Markets97,383$1.35M0.0%+74.4%0.181%
2/14/2025 Boxer Capital Management LLC690,000$9.56M0.8%N/A1.282%
2/14/2025 PDT Partners LLC127,203$1.76M0.2%+15.0%0.236%
2/14/2025 Northern Trust Corp404,496$5.60M0.0%+8.5%0.752%
2/14/2025 The Manufacturers Life Insurance Company 70,184$972K0.0%-18.5%0.130%
2/14/2025 Birchview Capital LP304,574$4.22M3.4%+45.3%0.566%
2/14/2025 Susquehanna Fundamental Investments LLC80,677$1.12M0.0%N/A0.150%
2/14/2025 Virtus ETF Advisers LLC5,148$71K0.0%+19.3%0.010%
2/14/2025 Voya Investment Management LLC12,829$178K0.0%-8.1%0.024%
2/14/2025 RBF Capital LLC29,200$404K0.0%-35.6%0.054%
2/14/2025 Price T Rowe Associates Inc. MD3,685,708$51.05M0.0%-3.6%6.850%
2/14/2025 Hsbc Holdings PLC24,179$323K0.0%+60.4%0.045%
2/14/2025 Rock Springs Capital Management LP644,601$8.93M0.3%+3.1%1.198%
2/14/2025 Tower Research Capital LLC TRC 16,826$233K0.0%+208.3%0.031%
2/14/2025 Dimensional Fund Advisors LP864,833$11.98M0.0%+1.3%1.607%
2/13/2025 XTX Topco Ltd18,665$259K0.0%+19.9%0.035%
2/13/2025 Mariner LLC343,917$4.76M0.0%+6.4%0.639%
2/13/2025 Barclays PLC105,338$1.46M0.0%+10.6%0.196%
2/13/2025 Raymond James Financial Inc.13,111$182K0.0%N/A0.024%
2/13/2025 Renaissance Technologies LLC201,900$2.80M0.0%+10.4%0.375%
2/13/2025 Legal & General Group Plc41,405$573K0.0%-3.7%0.077%
2/13/2025 Invesco Ltd.42,846$593K0.0%+4.0%0.080%
2/13/2025 FMR LLC8,071,309$111.79M0.0%+0.1%15.000%
2/13/2025 Federated Hermes Inc.746,177$10.34M0.0%+84.3%1.387%
2/13/2025 Finepoint Capital LP657,071$9.10M0.6%+51.6%1.221%
2/13/2025 Wells Fargo & Company MN52,823$732K0.0%-20.2%0.098%
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2/12/2025 Massachusetts Financial Services Co. MA44,815$621K0.0%N/A0.083%
2/12/2025 Headlands Technologies LLC7,330$102K0.0%+196.5%0.014%
2/12/2025 Geode Capital Management LLC964,308$13.36M0.0%+0.1%1.792%
2/12/2025 Franklin Resources Inc.19,687$273K0.0%N/A0.037%
2/12/2025 Wellington Management Group LLP5,130,876$71.06M0.0%+22.8%9.535%
2/12/2025 Norges Bank57,454$796K0.0%N/A0.107%
2/12/2025 JPMorgan Chase & Co.387,350$5.37M0.0%+93.7%0.720%
2/11/2025 Corebridge Financial Inc.21,140$293K0.0%-7.0%0.039%
2/11/2025 Vanguard Group Inc.1,403,838$19.44M0.0%+11.5%2.609%
2/11/2025 KLP Kapitalforvaltning AS12,900$179K0.0%N/A0.024%
2/11/2025 American Century Companies Inc.30,399$421K0.0%+66.1%0.056%
2/11/2025 DCF Advisers LLC103,500$1.43M0.7%-3.7%0.192%
2/11/2025 Teacher Retirement System of Texas10,434$145K0.0%N/A0.019%
2/10/2025 Thrivent Financial for Lutherans38,626$535K0.0%-18.7%0.072%
2/10/2025 Connor Clark & Lunn Investment Management Ltd.91,840$1.27M0.0%-25.0%0.171%
2/7/2025 Amundi1,954$28K0.0%-85.7%0.004%
2/7/2025 Foundation Wealth Management LLC19,471$270K0.2%N/A0.036%
2/6/2025 Raymond James Financial Inc.13,111$182K0.0%N/A0.024%
2/6/2025 Charles Schwab Investment Management Inc.327,151$4.53M0.0%+0.7%0.608%
2/5/2025 Purkiss Capital Advisors LLC10,729$149K0.1%N/A0.020%
2/4/2025 Bank of New York Mellon Corp150,238$2.08M0.0%+14.9%0.279%
2/3/2025 Handelsbanken Fonder AB20,900$289K0.0%+35.7%0.039%
1/31/2025 HighMark Wealth Management LLC11,168$155K0.1%-32.3%0.021%
1/30/2025 Rhumbline Advisers67,115$930K0.0%+1.8%0.125%
1/28/2025 Focused Wealth Management Inc32,129$445K0.1%N/A0.060%
1/24/2025 China Universal Asset Management Co. Ltd.11,409$158K0.0%+10.3%0.021%
1/24/2025 Chicago Partners Investment Group LLC11,197$159K0.0%N/A0.021%
1/21/2025 Duncan Williams Asset Management LLC69,199$958K0.4%+41.9%0.129%
1/17/2025 SG Americas Securities LLC37,612$521K0.0%+167.0%0.070%
1/15/2025 Hennion & Walsh Asset Management Inc.52,284$724K0.0%N/A0.097%
12/26/2024 JPMorgan Chase & Co.199,986$3.35M0.0%-32.4%0.372%
11/19/2024 Barclays PLC95,222$1.59M0.0%+110.2%0.177%
11/16/2024 Geode Capital Management LLC963,479$16.12M0.0%-3.1%1.792%
11/15/2024 Barclays PLC95,222$1.59M0.0%+110.2%0.177%
11/15/2024 Orion Portfolio Solutions LLC17,531$293K0.0%+4.4%0.033%
11/15/2024 XTX Topco Ltd15,564$260K0.0%N/A0.029%
11/15/2024 Wellington Management Group LLP4,178,788$69.91M0.0%+14.8%7.770%
11/15/2024 State Street Corp1,674,909$28.02M0.0%-13.3%3.114%
11/15/2024 Systematic Financial Management LP8,125$136K0.0%-95.8%0.015%
11/15/2024 Janus Henderson Group PLC18,047$301K0.0%-98.2%0.034%
11/14/2024 PDT Partners LLC110,654$1.85M0.2%+7.7%0.206%
11/14/2024 UBS AM a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC526,748$8.81M0.0%+1,122.9%0.979%
11/13/2024 BNP Paribas Financial Markets55,842$934K0.0%+44.6%0.104%
11/13/2024 FMR LLC8,066,983$134.96M0.0%+0.0%15.000%
11/13/2024 The Manufacturers Life Insurance Company86,071$1.44M0.0%+3.8%0.160%
11/13/2024 Dynamic Technology Lab Private Ltd25,764$432K0.0%N/A0.048%
11/12/2024 Algert Global LLC72,961$1.22M0.0%-5.5%0.136%
11/12/2024 Charles Schwab Investment Management Inc.324,962$5.44M0.0%-0.7%0.604%
11/9/2024 Primecap Management Co. CA35,500$594K0.0%-2.7%0.066%
11/9/2024 Intech Investment Management LLC12,555$210K0.0%N/A0.023%
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11/8/2024 Connor Clark & Lunn Investment Management Ltd.122,492$2.05M0.0%+8.6%0.228%
11/5/2024 GSA Capital Partners LLP28,941$484K0.0%N/A0.054%
10/25/2024 Pinnacle Associates Ltd.125,747$2.10M0.0%+2.3%0.234%
10/25/2024 China Universal Asset Management Co. Ltd.10,344$173K0.0%+63.7%0.019%
10/11/2024 Creative Planning20,907$350K0.0%N/A0.039%
10/3/2024 Duncan Williams Asset Management LLC48,749$816K0.4%N/A0.091%
10/3/2024 SG Americas Securities LLC14,087$236K0.0%-74.2%0.026%
8/16/2024 Systematic Financial Management LP193,763$4.00M0.1%+25.8%0.360%
8/16/2024 Algert Global LLC77,191$1.59M0.1%+59.7%0.144%
8/15/2024 Armistice Capital LLC1,560,000$32.20M0.4%+42.3%2.901%
(Data available from 1/1/2016 forward)

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PRTA Institutional Ownership - Frequently Asked Questions

Who are the largest shareholders of PRTA shares?

During the previous two years, 150 institutional investors and hedge funds held shares of Prothena. The most heavily invested institutionals were FMR LLC ($111.79M), Wellington Management Group LLP ($71.06M), Price T Rowe Associates Inc. MD ($51.05M), Armistice Capital LLC ($32.20M), State Street Corp ($28.02M), Artal Group S.A. ($24.80M), and Boxer Capital LLC ($24.17M).Learn more on PRTA's institutional investors.

What percentage of Prothena stock is owned by institutional investors?

97.08% of Prothena stock is owned by institutional investors. Learn more on PRTA's institutional investor holdings.

Which institutional investors have been buying Prothena stock?

Of the 128 institutional investors that purchased Prothena stock in the last 24 months, the following investors and hedge funds have bought the highest volume of shares: Wellington Management Group LLP ($3.40M), FMR LLC ($2.94M), Armistice Capital LLC ($742K), Boxer Capital Management LLC ($690K), Artal Group S.A. ($500K), UBS AM a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC ($483.67K), and Price T Rowe Associates Inc. MD ($417.34K).

How much institutional buying is happening at Prothena?

Institutional investors have bought a total of 14,171,021 shares in the last 24 months. This purchase volume represents approximately $459.34M in transactions.

Which Prothena major shareholders have been selling company stock?

Of the 68 institutional investors that sold Prothena stock in the last 24 months, the following investors and hedge funds have sold the highest volume of shares: Janus Henderson Group PLC ($1.73M), First Light Asset Management LLC ($1.07M), PFM Health Sciences LP ($646.83K), Prosight Management LP ($392.44K), Dimensional Fund Advisors LP ($318.90K), SG Americas Securities LLC ($265.47K), and State Street Corp ($257.56K).

How much institutional selling is happening at Prothena?

Institutional investors have sold a total of 6,692,035 shares in the last 24 months. This volume of shares sold represents approximately $211.97M in transactions.


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This page (NASDAQ:PRTA) was last updated on 3/28/2025 by MarketBeat.com Staff
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