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Prothena Corp PLC (PRTA)

CUSIP: G72800108 | 784 institutional holders

Quarters

Q3 2026Q2 2026Q1 2026Q4 2025Q3 2025
CompareDetailedHistoricalFundsOptions13D/13GPeersTargetingTrading SummaryProfile

Beneficial Ownership — 13D / 13G

Full history →

5%+ stakes reported outside the quarterly cycle. A 13D is due within five business days of the event below, so these figures lead the holders table until the filer's next 13F catches up to them.

HolderShares% of ClassChangeEvent Datevs 13F
13G/AFennell Todd W.5,248,84610.2%+238,000Aug 18, 2026No 13F filer matched
13G/AFennell Todd W.5,248,846
10.2% of class · Aug 18, 2026+238,000
No 13F filer matched

Institutional Holders — Q3 2026

Dimensional Fund Advisors LP926,072
0.0% of portfolio›$7.8M
Penbrook Management LLC271,720
1.3% of portfolio›$2.3M
MacKenzie Financial Corp271,086
0.0% of portfolio›$2.3M
Focused Wealth Management, Inc200,473
0.1% of portfolio›$1.7M
Creative Planning153,049
0.0% of portfolio›$1.3M
Bank of New York Mellon Corp134,790
0.0% of portfolio›$1.1M
DCF Advisers, LLC129,911
0.2% of portfolio›$1.1M
Hennion & Walsh Asset Management, Inc.84,321
0.0% of portfolio›$706.6K
Pinnacle Associates LTD61,507
0.0% of portfolio›$515.4K
Achmea Investment Management B.V.57,619
0.0% of portfolio›$483.2K
Citigroup Inc30,603
0.0% of portfolio›$256.5K
Allspring Global Investments Holdings, LLC28,025
0.0% of portfolio›$239.3K
Chicago Partners Investment Group LLC25,779
0.0% of portfolio›$211.4K
Covestor Ltd22,328
0.0% of portfolio›$187
Mogy Joel R Investment Counsel Inc20,750
0.0% of portfolio›$173.9K
Foundation Wealth Management, LLC19,236
0.1% of portfolio›$161.2K
Profund Advisors LLC14,151
0.0% of portfolio›$118.6K
Wealth Enhancement Advisory Services, LLC13,268
0.0% of portfolio›$114.2K
Inscription Capital, LLC11,587
0.0% of portfolio›$97.1K
Commonwealth Equity Services, LLC11,367
0.0% of portfolio›$95.3K
China Universal Asset Management Co., Ltd.9,367
0.0% of portfolio›$82.2K
Versant Capital Management, Inc5,704
0.0% of portfolio›$47.8K
Pinnacle Wealth Planning Services, Inc.5,668
0.0% of portfolio›$47.5K
Signaturefd, LLC2,861
0.0% of portfolio›$24.0K
Farther Finance Advisors, LLC2,786
0.0% of portfolio›$23.3K
Mirae Asset Global Investments Co., Ltd.2,623
0.0% of portfolio›$22.0K
Gamma Investing LLC2,246
0.0% of portfolio›$18.8K
Flagship Wealth Advisors, LLC1,500
0.0% of portfolio›$12.6K
Simplex Trading, LLC1,352
0.0% of portfolio›$11.3K
GF Fund Management Co. Ltd.1,240
0.0% of portfolio›$10.4K
Sterling Capital Management LLC1,204
0.0% of portfolio›$10.1K
Nisa Investment Advisors, LLC1,165
0.0% of portfolio›$9.8K
US Bancorp \de\1,075
0.0% of portfolio›$9.0K
SJS Investment Consulting Inc.812
0.0% of portfolio›$6.8K
Harbor Capital Advisors, Inc.555
0.0% of portfolio›$5
Essential Partners LLC251
0.0% of portfolio›$2.1K
Asset Dedication, LLC184
0.0% of portfolio›$1.5K
EverSource Wealth Advisors, LLC159
0.0% of portfolio›$1.3K
Axiom Investment Management LLC146
0.0% of portfolio›$1.2K
Root Financial Partners, LLC136
0.0% of portfolio›$1.1K
Albion Financial Group125
0.0% of portfolio›$1.0K
True Wealth Design, LLC109
0.0% of portfolio›$914
Provenance Wealth Advisors, LLC108
0.0% of portfolio›$905
Creative Financial Designs Inc104
0.0% of portfolio›$872
Harbor Investment Advisory, LLC100
0.0% of portfolio›$838
Parallel Advisors, LLC84
0.0% of portfolio›$704
IFP Advisors, Inc76
0.0% of portfolio›$637
Blue Trust, Inc.33
0.0% of portfolio›$277
Ascentis Wealth Management, LLC30
0.0% of portfolio›$251
Larson Financial Group LLC27
0.0% of portfolio›$226
SBI Securities Co., Ltd.15
0.0% of portfolio›$126
CoreCap Advisors, LLC11
0.0% of portfolio›$92
StyleTurnoverLocationFiled
Dimensional Fund Advisors LP
926,072$7.8M0.0%IndexLowAustin, TX2026-11-04
Penbrook Management LLC
271,720$2.3M1.3%CoreLowNew York, NY2026-10-16
MacKenzie Financial Corp
271,086$2.3M0.0%CoreMediumToronto Ontario, Australia2026-11-02
Focused Wealth Management, Inc
200,473$1.7M0.1%ETFLowNewburgh, NY2026-10-30
Creative Planning
153,049$1.3M0.0%IndexVery LowOverland Park, KS2026-11-02
Bank of New York Mellon Corp
134,790$1.1M0.0%CoreLowNew York, NY2026-11-05
DCF Advisers, LLC
129,911$1.1M0.2%GrowthMediumMount Pleasant, SC2026-11-04
Hennion & Walsh Asset Management, Inc.
84,321$706.6K0.0%ValueMediumParsippany, NJ2026-10-13
Pinnacle Associates LTD
61,507$515.4K0.0%CoreLowNew York, NY2026-10-20
Achmea Investment Management B.V.
57,619$483.2K0.0%CoreMediumZeist, Philippines2026-10-30
Citigroup Inc
30,603$256.5K0.0%CoreMediumNew York, NY2026-11-04
Allspring Global Investments Holdings, LLC
28,025$239.3K0.0%CoreMediumCharlotte, NC2026-11-04
Chicago Partners Investment Group LLC
25,779$211.4K0.0%GARPLowChicago, IL2026-10-27
Covestor Ltd
22,328$1870.0%ValueHighLondon, United Kingdom2026-10-30
Mogy Joel R Investment Counsel Inc
20,750$173.9K0.0%GrowthVery LowBeverly Hills, CA2026-10-13
Foundation Wealth Management, LLC
19,236$161.2K0.1%ETFLowClayton, MO2026-10-22
Profund Advisors LLC
14,151$118.6K0.0%GrowthLowBethesda, MD2026-10-29
Wealth Enhancement Advisory Services, LLC
13,268$114.2K0.0%CoreLowPlymouth, MN2026-10-13
Inscription Capital, LLC
11,587$97.1K0.0%GARPMediumHouston, TX2026-11-02
Commonwealth Equity Services, LLC
11,367$95.3K0.0%ETFLowWaltham, MA2026-11-02
China Universal Asset Management Co., Ltd.
9,367$82.2K0.0%GrowthMediumShanghai, France2026-10-28
Versant Capital Management, Inc
5,704$47.8K0.0%GARPLowPhoenix, AZ2026-10-02
Pinnacle Wealth Planning Services, Inc.
5,668$47.5K0.0%GARPLowMansfield, OH2026-10-27
Signaturefd, LLC
2,861$24.0K0.0%IndexLowAtlanta, GA2026-10-23
Farther Finance Advisors, LLC
2,786$23.3K0.0%IndexLowSan Francisco, CA2026-10-08
Mirae Asset Global Investments Co., Ltd.
2,623$22.0K0.0%GrowthLowSeoul, Malaysia2026-11-03
Gamma Investing LLC
2,246$18.8K0.0%IndexVery LowFoster City, CA2026-10-08
Flagship Wealth Advisors, LLC
1,500$12.6K0.0%ETFLowWakefield, MA2026-11-03
Simplex Trading, LLC
1,352$11.3K0.0%CoreVery HighChicago, IL2026-11-04
GF Fund Management Co. Ltd.
1,240$10.4K0.0%Agg GrowthMediumGuangzhou, France2026-10-26
Sterling Capital Management LLC
1,204$10.1K0.0%GARPMediumCharlotte, NC2026-10-22
Nisa Investment Advisors, LLC
1,165$9.8K0.0%IndexVery LowSt. Louis, MO2026-10-20
US Bancorp \de\
1,075$9.0K0.0%IndexLowMinneapolis, MN2026-11-05
SJS Investment Consulting Inc.
812$6.8K0.0%ETFVery LowSylvania, OH2026-10-26
Harbor Capital Advisors, Inc.
555$50.0%ValueHighChicago, IL2026-10-22
Essential Partners LLC
251$2.1K0.0%ValueMediumRancho Santa Fe, CA2026-10-14
Asset Dedication, LLC
184$1.5K0.0%ETFLowSan Francisco, CA2026-11-03
EverSource Wealth Advisors, LLC
159$1.3K0.0%CoreMediumBirmingham, AL2026-11-04
Axiom Investment Management LLC
146$1.2K0.0%CoreN/ANew York, NY2026-11-03
Root Financial Partners, LLC
136$1.1K0.0%ETFMediumEncinitas, CA2026-10-21
Albion Financial Group
125$1.0K0.0%GrowthLowSalt Lake City, UT2026-10-21
True Wealth Design, LLC
109$9140.0%ETFMediumAkron, OH2026-10-13
Provenance Wealth Advisors, LLC
108$9050.0%ETFLowFort Lauderdale, FL2026-10-30
Creative Financial Designs Inc
104$8720.0%ETFMediumKokomo, IN2026-11-04
Harbor Investment Advisory, LLC
100$8380.0%GrowthLowLutherville, MD2026-10-13
Parallel Advisors, LLC
84$7040.0%IndexLowSan Francisco, CA2026-11-03
IFP Advisors, Inc
76$6370.0%GrowthLowTampa, FL2026-10-16
Blue Trust, Inc.
33$2770.0%ETFLowBrentwood, TN2026-10-15
Ascentis Wealth Management, LLC
30$2510.0%Agg GrowthLowDallas, TX2026-11-03
Larson Financial Group LLC
27$2260.0%GrowthLowSt Louis, MO2026-11-05
SBI Securities Co., Ltd.
15$1260.0%Agg GrowthLowTokyo, Mexico2026-10-22
CoreCap Advisors, LLC
11$920.0%ETFMediumSouthfield, MI2026-10-08