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Protagonist Therapeutics, Inc

PTGX
Exchange
Nasdaq
Industry
Pharmaceutical Preparations
SEC CIK
0001377121

In the last 90 days, Protagonist Therapeutics, Inc insiders filed 0 open-market purchases and 2 sales; 346 institutions reported holding it in 13F filings for Q2 2026, worth $9.30B in total; Duquesne Family Office is the only superinvestor holding it.

13F holders, Q2 2025

Institutional positions in Protagonist Therapeutics, Inc as of Jun 30, 2025. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works

Institutional holders
274
+3 vs. Q1 2025
Shares held
71.0M
+5.66M (+8.7%) vs. Q1 2025
Total value
$3.92B
+$774.8M (+24.6%) vs. Q1 2025
New holders
52
120 more added
Sold out
49
76 more reduced

4 institutions that held it in Q1 2025 haven't filed for Q2 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q1 2025: new holders, sold out and not filed yet

Holders and value by quarter

Institutions reporting PTGX on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.

Institutional holdersQ2 2025: 274 institutions
Q1 2021: 127 institutionsQ2 2021: 139 institutionsQ3 2021: 132 institutionsQ4 2021: 149 institutionsQ1 2022: 140 institutionsQ2 2022: 131 institutionsQ3 2022: 133 institutionsQ4 2022: 137 institutionsQ1 2023: 138 institutionsQ2 2023: 167 institutionsQ3 2023: 144 institutionsQ4 2023: 157 institutionsQ1 2024: 185 institutionsQ2 2024: 188 institutionsQ3 2024: 240 institutionsQ4 2024: 241 institutionsQ1 2025: 275 institutionsQ2 2025: 274 institutionsQ3 2025: 275 institutionsQ4 2025: 319 institutionsQ1 2026: 322 institutionsQ2 2026: 346 institutions
Value heldQ2 2025: $3.92B
Q1 2021: $1.15BQ2 2021: $2.16BQ3 2021: $820.8MQ4 2021: $1.68BQ1 2022: $1.19BQ2 2022: $422.1MQ3 2022: $398.9MQ4 2022: $533.3MQ1 2023: $1.22BQ2 2023: $1.57BQ3 2023: $945.9MQ4 2023: $1.32BQ1 2024: $1.73BQ2 2024: $2.05BQ3 2024: $2.78BQ4 2024: $2.44BQ1 2025: $3.15BQ2 2025: $3.92BQ3 2025: $4.70BQ4 2025: $6.18BQ1 2026: $8.31BQ2 2026: $9.30B
Institutions holding PTGX and their total value by quarter
QuarterHoldersValue
Q2 2026346$9.30B
Q1 2026322$8.31B
Q4 2025319$6.18B
Q3 2025275$4.70B
Q2 2025274$3.92B
Q1 2025275$3.15B
Q4 2024241$2.44B
Q3 2024240$2.78B
Q2 2024188$2.05B
Q1 2024185$1.73B
Q4 2023157$1.32B
Q3 2023144$945.9M
Q2 2023167$1.57B
Q1 2023138$1.22B
Q4 2022137$533.3M
Q3 2022133$398.9M
Q2 2022131$422.1M
Q1 2022140$1.19B
Q4 2021149$1.68B
Q3 2021132$820.8M
Q2 2021139$2.16B
Q1 2021127$1.15B

Institutions, Q2 2025

Shares, value and share of portfolio for each institution holding Protagonist Therapeutics, Inc; share changes are against Q1 2025.

Institutions holding PTGX in Q2 2025
InstitutionSharesValue% of portfolioChange in sharesAction
Cerity Partners LLC9,722$537.3K0.00%+477+5.2%Added
HighTower Advisors, LLC9,980$551.6K0.00%+3,462+53.1%Added
Zurcher Kantonalbank (Zurich Cantonalbank)10,073$556.7K0.00%+981+10.8%Added
Cache Advisors, LLC10,143$560.6K0.15%00.0%Unchanged
Options Solutions, LLC10,226$565.2K0.20%+10,226New
KLP Kapitalforvaltning AS10,400$574.8K0.00%+1,700+19.5%Added
Franklin Street Advisors Inc11,300$625.0K0.04%00.0%Unchanged
Royce & Associates LP12,255$677.3K0.01%00.0%Unchanged
Harvest Investment Services, LLC13,029$720.1K0.16%−2,882−18.1%Reduced
Algert Global LLC13,055$721.5K0.02%−5,610−30.1%Reduced
Teacher Retirement System of Texas13,205$729.8K0.00%+1,180+9.8%Added
Natixis Advisors, L.P.13,442$743.0K0.00%+13,442New
Police & Firemen's Retirement System of New Jersey13,456$743.7K0.01%+528+4.1%Added
Erste Asset Management GmbH13,500$751.8K0.01%00.0%Unchanged
Oregon Public Employees Retirement Fund14,200$784.8K0.01%+500+3.6%Added
Arizona State Retirement System14,326$791.8K0.00%+1,525+11.9%Added
Precision Wealth Strategies, LLC14,339$792.5K0.26%+14,339New
UBS Oconnor LLC14,523$802.7K0.02%+1,183+8.9%Added
Millennium Management LLC15,191$839.6K0.00%−119,078−88.7%Reduced
ProShare Advisors LLC15,376$849.8K0.00%−1,382−8.2%Reduced
Mariner, LLC15,701$867.8K0.00%−930−5.6%Reduced
Moran Wealth Management, LLC15,761$871.1K0.03%−134−0.8%Reduced
DekaBank Deutsche Girozentrale15,800$879.0K0.00%00.0%Unchanged
Commonwealth of Pennsylvania Public School Empls Retrmt Sys15,913$879.5K0.00%+1,651+11.6%Added
Polen Capital Management LLC15,999$884.3K0.00%+15,999New
State Board of Administration of Florida Retirement System16,303$901.1K0.00%00.0%Unchanged
StemPoint Capital LP16,770$926.8K0.30%−32,471−65.9%Reduced
Handelsbanken Fonder AB17,000$940.0K0.00%+2,600+18.1%Added
AQR Capital Management LLC17,409$962.2K0.00%−22,678−56.6%Reduced
Winton Group Ltd17,433$963.5K0.05%−3,362−16.2%Reduced
Persistent Asset Partners Ltd17,520$968.3K0.85%+17,520New
Amalgamated Bank17,543$970.0K0.01%+605+3.6%Added
Arrowstreet Capital, Limited Partnership17,856$986.9K0.00%+17,856New
Maryland State Retirement & Pension System18,216$1.01M0.02%+818+4.7%Added
Teachers Retirement System of the State of Kentucky18,732$1.04M0.01%−1,468−7.3%Reduced
China Universal Asset Management Co., Ltd.18,908$1.05M0.10%+136+0.7%Added
Virginia Retirement Systems Et Al19,000$1.05M0.01%+1,400+8.0%Added
Profund Advisors LLC19,074$1.05M0.04%+7,515+65.0%Added
Guggenheim Capital LLC19,208$1.06M0.01%+303+1.6%Added
Bellevue Group AG19,472$1.08M0.02%+1,850+10.5%Added
New York State Common Retirement Fund19,582$1.08M0.00%00.0%Unchanged
STRS Ohio19,600$1.08M0.00%+600+3.2%Added
Fieldview Capital Management, LLC20,381$1.13M0.17%+20,381New
Comerica Bank21,291$1.18M0.00%+1,050+5.2%Added
Glenmede Investment Management, LP21,434$1.18M0.01%+21,434New
Allianz Asset Management GmbH22,300$1.23M0.00%+15,900+248.4%Added
Mackenzie Financial Corp22,457$1.24M0.00%−241−1.1%Reduced
Horizon Investments, LLC22,470$1.24M0.02%+22,470New
Artia Global Partners LP22,951$1.27M0.33%−310,900−93.1%Reduced
Ensign Peak Advisors, Inc23,136$1.28M0.00%−3,900−14.4%Reduced
Yousif Capital Management, LLC23,404$1.29M0.01%+1,067+4.8%Added
Toroso Investments, LLC23,777$1.31M0.01%+4,367+22.5%Added
Envestnet Asset Management Inc23,878$1.32M0.00%+7,199+43.2%Added
State of Tennessee, Treasury Department25,990$1.44M0.01%−495−1.9%Reduced
Brevan Howard Capital Management LP26,994$1.49M0.02%+10,880+67.5%Added
Citadel Advisors LLC27,201$1.50M0.00%−126,866−82.3%Reduced
Illinois Municipal Retirement Fund27,569$1.52M0.02%+8,060+41.3%Added
Louisiana State Employees Retirement System29,000$1.60M0.03%+900+3.2%Added
Creative Planning30,204$1.67M0.00%+12,871+74.3%Added
Hussman Strategic Advisors, Inc.31,500$1.74M0.40%−21,000−40.0%Reduced
Massachusetts Financial Services Co32,123$1.78M0.00%+397+1.3%Added
State of Wisconsin Investment Board32,988$1.82M0.00%−20,752−38.6%Reduced
Intech Investment Management LLC33,953$1.88M0.02%+2,971+9.6%Added
Man Group plc34,013$1.88M0.00%−94,593−73.6%Reduced
MetLife Investment Management34,770$1.92M0.01%−20−0.1%Reduced
J. Goldman & Co LP35,828$1.98M0.06%−29,416−45.1%Reduced
Mirae Asset Global ETFs Holdings Ltd.35,841$1.98M0.00%−1,562−4.2%Reduced
Trexquant Investment LP36,018$1.99M0.02%−67,965−65.4%Reduced
State of Alaska, Department of Revenue36,906$2.04M0.02%+3,883+11.8%Added
Gotham Asset Management, LLC37,287$2.06M0.01%+14,215+61.6%Added
Alps Advisors Inc40,220$2.22M0.01%−12,754−24.1%Reduced
Universal- Beteiligungs- und Servicegesellschaft mbH40,484$2.24M0.00%+36,288+864.8%Added
State of New Jersey Common Pension Fund D41,025$2.27M0.01%−12,711−23.7%Reduced
Wells Fargo & Company41,687$2.30M0.00%+1,878+4.7%Added
Aquatic Capital Management LLC42,000$2.32M0.05%+26,893+178.0%Added
Natixis42,040$2.32M0.01%+42,040New
SEI Investments Co44,932$2.48M0.00%+7,404+19.7%Added
Thrivent Financial for Lutherans45,576$2.52M0.01%+1,800+4.1%Added
Exchange Traded Concepts, LLC47,391$2.62M0.03%+19,999+73.0%Added
Birchview Capital, LP48,000$2.65M2.63%−20.0%Reduced
Capital Fund Management S.A.49,805$2.75M0.03%+49,805New
Great West Life Assurance Co50,242$2.78M0.00%−713−1.4%Reduced
California State Teachers Retirement System51,195$2.83M0.00%+9,339+22.3%Added
Axiom Investors LLC51,233$2.83M0.02%+11,264+28.2%Added
Silvercrest Asset Management Group LLC54,723$3.02M0.02%00.0%Unchanged
New York State Teachers Retirement System55,713$3.08M0.01%+8,858+18.9%Added
HighVista Strategies LLC57,851$3.20M1.17%−20,601−26.3%Reduced
Boxer Capital Management, LLC60,000$3.32M1.67%+60,000New
Parkman Healthcare Partners LLC61,596$3.40M0.39%+61,596New
Alliancebernstein L.P.67,900$3.75M0.00%00.0%Unchanged
Qube Research & Technologies Ltd68,983$3.81M0.01%−274,428−79.9%Reduced
EAM Global Investors LLC69,726$3.85M1.00%−240.0%Reduced
Susquehanna International Group, LLP71,241$3.94M0.01%−120,998−62.9%Reduced
EAM Investors, LLC71,971$3.98M0.60%+2,790+4.0%Added
Royal Bank of Canada74,734$4.13M0.00%+64,770+650.0%Added
Diadema Partners LP76,185$4.21M2.62%+76,185New
Schonfeld Strategic Advisors LLC77,068$4.26M0.03%−210,233−73.2%Reduced
Prudential Financial Inc77,408$4.28M0.01%+19,050+32.6%Added
Citigroup Inc77,951$4.31M0.00%−43,893−36.0%Reduced
Northwestern Mutual Wealth Management Co78,894$4.36M0.00%00.0%Unchanged