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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, Q3 2025

Institutional positions in Protagonist Therapeutics, Inc as of Sep 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
275
+3 vs. Q2 2025
Shares held
70.7M
−267.3K (−0.4%) vs. Q2 2025
Total value
$4.70B
+$772.8M (+19.7%) vs. Q2 2025
New holders
42
84 more added
Sold out
39
109 more reduced

2 institutions that held it in Q2 2025 haven't filed for Q3 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q2 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 holdersQ3 2025: 275 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 heldQ3 2025: $4.70B
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, Q3 2025

Shares, value and share of portfolio for each institution holding Protagonist Therapeutics, Inc; share changes are against Q2 2025.

Institutions holding PTGX in Q3 2025
InstitutionSharesValue% of portfolioChange in sharesAction
Brinker Capital Investments, LLC6,928$460.2K0.00%+328+5.0%Added
CWM Advisors, LLC6,938$460.9K0.04%−346−4.8%Reduced
New Vernon Capital Holdings II LLC7,198$478.2K0.22%00.0%Unchanged
XTX Topco Ltd7,260$482.3K0.03%−72−1.0%Reduced
Brevan Howard Capital Management LP7,598$504.7K0.01%−19,396−71.9%Reduced
Capstone Investment Advisors, LLC7,676$509.9K0.00%+689+9.9%Added
Aviva PLC7,792$517.6K0.00%−1,643−17.4%Reduced
Maryland State Retirement & Pension System8,407$558.5K0.01%−9,809−53.8%Reduced
AQR Capital Management LLC8,570$569.3K0.00%−8,839−50.8%Reduced
HighTower Advisors, LLC8,613$572.2K0.00%−1,367−13.7%Reduced
Cerity Partners LLC8,618$572.5K0.00%−1,104−11.4%Reduced
Resona Asset Management Co.,Ltd.8,731$580.0K0.00%+8,731New
Toroso Investments, LLC8,945$594.2K0.00%−14,832−62.4%Reduced
HRT Financial LP9,470$629.0K0.00%+9,470New
Zurcher Kantonalbank (Zurich Cantonalbank)10,073$669.1K0.00%00.0%Unchanged
Cache Advisors, LLC10,143$673.8K0.12%00.0%Unchanged
KLP Kapitalforvaltning AS10,400$690.9K0.00%00.0%Unchanged
Cambria Investment Management, L.P.10,944$727.0K0.04%+2,187+25.0%Added
Ensign Peak Advisors, Inc10,986$729.8K0.00%−12,150−52.5%Reduced
Franklin Street Advisors Inc11,300$750.7K0.04%00.0%Unchanged
Persistent Asset Partners Ltd11,780$782.5K0.57%−5,740−32.8%Reduced
Teacher Retirement System of Texas12,106$804.2K0.00%−1,099−8.3%Reduced
BNP Paribas Arbitrage, SA13,137$872.7K0.00%+3,998+43.7%Added
ProShare Advisors LLC13,187$876.0K0.00%−2,189−14.2%Reduced
Oregon Public Employees Retirement Fund13,200$876.9K0.01%−1,000−7.0%Reduced
Erste Asset Management GmbH13,500$879.4K0.01%00.0%Unchanged
Pathstone Holdings, LLC13,362$887.7K0.00%+5,167+63.1%Added
Mariner, LLC13,551$900.2K0.00%−2,150−13.7%Reduced
Weiss Asset Management LP14,310$950.6K0.01%+14,310New
Arizona State Retirement System14,669$974.5K0.01%+343+2.4%Added
Jain Global LLC14,850$986.5K0.01%+14,850New
Commonwealth of Pennsylvania Public School Empls Retrmt Sys14,893$989.3K0.00%−1,020−6.4%Reduced
DekaBank Deutsche Girozentrale15,800$1.03M0.00%00.0%Unchanged
Virginia Retirement Systems Et Al15,600$1.04M0.01%−3,400−17.9%Reduced
China Universal Asset Management Co., Ltd.15,905$1.06M0.09%−3,003−15.9%Reduced
Police & Firemen's Retirement System of New Jersey16,119$1.07M0.01%+2,663+19.8%Added
Moran Wealth Management, LLC16,212$1.08M0.03%+451+2.9%Added
State Board of Administration of Florida Retirement System16,303$1.08M0.00%00.0%Unchanged
Comerica Bank16,395$1.09M0.00%−4,896−23.0%Reduced
Amalgamated Bank16,826$1.12M0.01%−717−4.1%Reduced
Natixis Advisors, L.P.16,855$1.12M0.00%+3,413+25.4%Added
Royce & Associates LP16,989$1.13M0.01%+4,734+38.6%Added
Teachers Retirement System of the State of Kentucky17,296$1.15M0.01%−1,436−7.7%Reduced
STRS Ohio17,800$1.18M0.00%−1,800−9.2%Reduced
Glenmede Investment Management, LP18,000$1.20M0.01%−3,434−16.0%Reduced
J. Goldman & Co LP18,068$1.20M0.05%−17,760−49.6%Reduced
Profund Advisors LLC18,157$1.21M0.04%−917−4.8%Reduced
Yousif Capital Management, LLC18,426$1.22M0.01%−4,978−21.3%Reduced
Winton Group Ltd18,561$1.23M0.05%+1,128+6.5%Added
Guggenheim Capital LLC18,583$1.23M0.01%−625−3.3%Reduced
Handelsbanken Fonder AB18,900$1.26M0.00%+1,900+11.2%Added
New York State Common Retirement Fund19,582$1.30M0.00%00.0%Unchanged
Allianz Asset Management GmbH19,678$1.31M0.00%−2,622−11.8%Reduced
Polen Capital Management LLC20,325$1.35M0.00%+4,326+27.0%Added
Capital Fund Management S.A.20,348$1.35M0.01%−29,457−59.1%Reduced
Superstring Capital Management LP20,358$1.35M1.33%+20,358New
Bellevue Group AG20,581$1.37M0.03%+1,109+5.7%Added
Hussman Strategic Advisors, Inc.21,000$1.40M0.30%−10,500−33.3%Reduced
Intech Investment Management LLC21,643$1.44M0.01%−12,310−36.3%Reduced
Gotham Asset Management, LLC22,198$1.47M0.01%−15,089−40.5%Reduced
Artia Global Partners LP22,951$1.52M0.27%00.0%Unchanged
Envestnet Asset Management Inc24,258$1.61M0.00%+380+1.6%Added
State of Tennessee, Treasury Department26,490$1.76M0.01%+500+1.9%Added
Louisiana State Employees Retirement System26,900$1.79M0.03%−2,100−7.2%Reduced
Alps Advisors Inc29,203$1.94M0.01%−11,017−27.4%Reduced
State of Alaska, Department of Revenue29,425$1.95M0.02%−7,481−20.3%Reduced
Mirae Asset Global ETFs Holdings Ltd.30,871$2.05M0.00%−4,970−13.9%Reduced
SummitTX Capital, L.P.31,490$2.09M0.09%+31,490New
Illinois Municipal Retirement Fund33,183$2.20M0.03%+5,614+20.4%Added
Exchange Traded Concepts, LLC33,552$2.23M0.02%−13,839−29.2%Reduced
MetLife Investment Management33,846$2.25M0.01%−924−2.7%Reduced
Creative Planning36,214$2.41M0.00%+6,010+19.9%Added
State of New Jersey Common Pension Fund D37,956$2.52M0.01%−3,069−7.5%Reduced
State of Wisconsin Investment Board40,906$2.72M0.01%+7,918+24.0%Added
SG Americas Securities, LLC41,246$2.74M0.01%+39,322+2,043.8%Added
Thrivent Financial for Lutherans42,188$2.80M0.01%−3,388−7.4%Reduced
SEI Investments Co44,011$2.92M0.00%−921−2.0%Reduced
Jane Street Group, LLC44,339$2.95M0.00%+44,339New
Great West Life Assurance Co48,407$3.15M0.00%−1,835−3.7%Reduced
California State Teachers Retirement System47,437$3.15M0.00%−3,758−7.3%Reduced
Wells Fargo & Company47,794$3.17M0.00%+6,107+14.6%Added
StemPoint Capital LP47,954$3.19M0.64%+31,184+186.0%Added
Birchview Capital, LP48,000$3.19M2.41%00.0%Unchanged
New York State Teachers Retirement System49,550$3.29M0.01%−6,163−11.1%Reduced
Diadema Partners LP51,185$3.40M2.37%−25,000−32.8%Reduced
Silvercrest Asset Management Group LLC53,217$3.54M0.02%−1,506−2.8%Reduced
Northwestern Mutual Wealth Management Co58,894$3.91M0.00%−20,000−25.4%Reduced
Parkman Healthcare Partners LLC61,849$4.11M0.45%+253+0.4%Added
First Trust Advisors LP62,724$4.17M0.00%−51,183−44.9%Reduced
Susquehanna International Group, LLP63,188$4.20M0.01%−8,053−11.3%Reduced
Assenagon Asset Management S.A.65,756$4.37M0.01%−26,119−28.4%Reduced
Royal Bank of Canada69,996$4.65M0.00%−4,738−6.3%Reduced
Rafferty Asset Management, LLC74,827$4.97M0.02%−5,716−7.1%Reduced
EAM Investors, LLC80,067$5.23M0.60%+8,096+11.2%Added
Skandinaviska Enskilda Banken AB (publ)78,796$5.23M0.02%−3,954−4.8%Reduced
Axiom Investors LLC80,113$5.32M0.04%+28,880+56.4%Added
EFG Asset Management (North America) Corp.82,639$5.49M0.71%+913+1.1%Added
Franklin Resources Inc82,918$5.51M0.00%+339+0.4%Added
Knott David M Jr83,000$5.51M2.31%+3,000+3.8%Added
Atika Capital Management LLC83,000$5.51M0.47%+83,000New