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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 3 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, Q1 2026

Institutional positions in Protagonist Therapeutics, Inc as of Mar 31, 2026. 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
322
+10 vs. Q4 2025
Shares held
78.9M
+13.3M (+20.3%) vs. Q4 2025
Total value
$8.31B
+$2.61B (+45.7%) vs. Q4 2025
New holders
60
111 more added
Sold out
50
104 more reduced

7 institutions that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q4 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 holdersQ1 2026: 322 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 heldQ1 2026: $8.31B
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, Q1 2026

Shares, value and share of portfolio for each institution holding Protagonist Therapeutics, Inc; share changes are against Q4 2025.

Institutions holding PTGX in Q1 2026
InstitutionSharesValue% of portfolioChange in sharesAction
Keybank National Association4,286$451.7K0.00%+4,286New
Abel Hall, LLC4,258$448.8K0.10%+4,258New
Amundi4,113$433.5K0.00%+4,113New
Abacus Wealth Partners, LLC4,094$431.5K0.04%+331+8.8%Added
King Wealth4,000$422.0K0.05%00.0%Unchanged
Seven Fleet Capital Management LP4,000$421.6K0.13%−4,000−50.0%Reduced
The PNC Financial Services Group, Inc.3,998$421.4K0.00%+1,039+35.1%Added
US Bancorp3,914$412.5K0.00%−481−10.9%Reduced
M&T Bank Corp3,858$406.8K0.00%+105+2.8%Added
Nisa Investment Advisors, LLC3,802$400.7K0.00%+22+0.6%Added
Vestcor Inc3,765$397.0K0.01%00.0%Unchanged
Hudson Bay Capital Management LP3,760$396.3K0.00%−105,855−96.6%Reduced
Velan Capital Investment Management LP3,700$390.0K0.24%00.0%Unchanged
Jane Street Group, LLC3,607$380.2K0.00%−30,700−89.5%Reduced
Wealth Enhancement Advisory Services, LLC3,657$379.5K0.00%+103+2.9%Added
Crossmark Global Holdings, Inc.3,489$367.7K0.01%−471−11.9%Reduced
Mirae Asset Global Investments Co., Ltd.3,328$350.8K0.00%+290+9.5%Added
Gabelli Funds LLC3,229$340.3K0.00%+3,229New
Burney Co3,179$335.1K0.01%−501−13.6%Reduced
Pinnacle Wealth Planning Services, Inc.3,132$330.1K0.03%+268+9.4%Added
Swiss Life Asset Management Ltd3,104$327.2K0.00%+673+27.7%Added
PSP Research LLC3,000$316.2K0.22%−3,121−51.0%Reduced
CIBC Bancorp USA Inc.2,968$312.8K0.00%+2,968New
Headlands Technologies LLC2,957$311.7K0.04%−14,122−82.7%Reduced
GAMMA Investing LLC2,901$305.8K0.01%+229+8.6%Added
AE Wealth Management LLC2,888$304.4K0.00%+2,888New
Virtus Investment Advisers, Inc.2,860$301.4K0.08%+70+2.5%Added
Evergreen Capital Management LLC2,820$297.2K0.01%+8+0.3%Added
Norden Group LLC2,810$296.2K0.03%+2,810New
LPL Financial LLC2,793$294.4K0.00%−472−14.5%Reduced
Mariner, LLC2,775$292.4K0.00%−4,845−63.6%Reduced
Sumitomo Mitsui Trust Holdings, Inc.2,760$290.9K0.00%+200+7.8%Added
Jones Financial Companies LLLP2,923$289.3K0.00%+2,877+6,254.3%Added
New Age Alpha Advisors, LLC2,706$285.2K0.01%−78−2.8%Reduced
CIBC Asset Management Inc2,667$281.1K0.00%00.0%Unchanged
Eventide Asset Management, LLC2,795$279.2K0.00%+2,795New
NBC Securities, Inc.2,547$268.5K0.02%−430−14.4%Reduced
Vise Technologies, Inc.2,996$261.7K0.01%00.0%Unchanged
O'Shaughnessy Asset Management, LLC2,440$257.2K0.00%−1,929−44.2%Reduced
GTS Securities LLC2,416$254.6K0.01%+2,416New
Empowered Funds, LLC2,321$244.6K0.00%+2,321New
DnB Asset Management AS2,244$236.5K0.00%+2,244New
RSM US Wealth Management LLC2,234$235.5K0.00%+2,234New
TFB Advisors LLC2,191$230.9K0.12%+2,191New
Concurrent Investment Advisors, LLC2,060$217.1K0.00%+2,060New
Prelude Capital Management, LLC2,012$212.1K0.02%+2,012New
Axiom Investment Management LLC2,000$210.8K0.16%+2,000New
Shelton Capital Management1,908$201.1K0.00%+1,908New
HSBC Holdings PLC1,907$201.0K0.00%+1,907New
Captrust Financial Advisors1,902$200.5K0.00%−830−30.4%Reduced
Oppenheimer & Co Inc1,900$200.3K0.00%+1,900New
Royal Bank of Canada1,599$169.0K0.00%−1,584−49.8%Reduced
KBC Group NV1,574$166.0K0.00%00.0%Unchanged
Quadrant Capital Group LLC1,429$150.6K0.00%−38−2.6%Reduced
GF Fund Management Co. Ltd.1,404$148.0K0.00%+177+14.4%Added
Advisor Group Holdings, Inc.1,197$126.2K0.00%−3,004−71.5%Reduced
Truvestments Capital LLC1,161$122.4K0.02%00.0%Unchanged
Federated Hermes, Inc.1,001$105.5K0.00%+1,001New
Canton Hathaway, LLC1,000$105.4K0.02%00.0%Unchanged
EverSource Wealth Advisors, LLC911$96.0K0.00%+352+63.0%Added
Covestor Ltd875$92.0K0.06%−562−39.1%Reduced
Hantz Financial Services, Inc.857$90.0K0.00%−94−9.9%Reduced
Smartleaf Asset Management LLC890$88.9K0.00%−837−48.5%Reduced
Larson Financial Group LLC819$86.3K0.00%+648+378.9%Added
CWM, LLC737$77.7K0.00%+181+32.6%Added
CFG Wealth Management Services, Inc.611$64.4K0.06%+9+1.5%Added
Salomon & Ludwin, LLC595$61.7K0.01%+159+36.5%Added
Kemnay Advisory Services Inc.521$54.9K0.01%+340+187.8%Added
Sterling Capital Management LLC377$39.7K0.00%−1−0.3%Reduced
Umb Bank N A353$37.2K0.00%+20+6.0%Added
Toronto Dominion Bank349$36.8K0.00%+349New
Ameritas Advisory Services, LLC334$35.2K0.00%+334New
Farther Finance Advisors, LLC333$34.5K0.00%+36+12.1%Added
Allworth Financial LP313$33.0K0.00%+58+22.7%Added
Signaturefd, LLC288$30.4K0.00%+125+76.7%Added
Keating Financial Advisory Services, Inc.224$23.6K0.00%+222+11,100.0%Added
Clearstead Advisors, LLC200$21.1K0.00%−22−9.9%Reduced
Twin Peaks Wealth Advisors, LLC173$18.2K0.00%+173New
E Fund Management (Hong Kong) Co., Ltd.156$16.4K0.01%+156New
Sound Income Strategies, LLC156$16.2K0.00%−128−45.1%Reduced
Massmutual Trust Co FSB125$13.2K0.00%+6+5.0%Added
Parallel Advisors, LLC123$13.0K0.00%+14+12.8%Added
Cedar Mountain Advisors, LLC113$11.9K0.00%+113New
Rothschild Investment LLC107$11.3K0.00%+21+24.4%Added
WPG Advisers, LLC97$10.2K0.01%+1+1.0%Added
Bare Financial Services, Inc95$10.0K0.00%−15−13.6%Reduced
Bell Investment Advisors, Inc81$8.54K0.00%00.0%Unchanged
Brown Brothers Harriman & Co81$8.54K0.00%00.0%Unchanged
Parkside Financial Bank & Trust76$8.01K0.00%−8−9.5%Reduced
Annis Gardner Whiting Capital Advisors, LLC76$8.01K0.00%00.0%Unchanged
SBI Securities Co., Ltd.70$7.38K0.00%00.0%Unchanged
Raffa Wealth Management, LLC60$6.32K0.00%00.0%Unchanged
Sankala Group LLC60$6.07K0.00%00.0%Unchanged
Hollencrest Capital Management45$4.74K0.00%+45New
MCF Advisors LLC40$4.22K0.00%+40New
Huntington National Bank35$3.69K0.00%00.0%Unchanged
Farmers & Merchants Investments Inc35$3.69K0.00%00.0%Unchanged
Wolff Wiese Magana LLC35$3.69K0.00%00.0%Unchanged
Torren Management, LLC30$3.16K0.00%−9−23.1%Reduced
Marquette Asset Management, LLC28$2.95K0.00%00.0%Unchanged