Protagonist Therapeutics PTGX Institutional Ownership

NASDAQ PTGX

$142.32 +1.43 (+1.01%)

As of: Oct 1, 2026 · 2:23 PM EDT

Institutions by Trading Activity

346 Institutions

Increased 204 59.0%

Unchanged 55 15.9%

Reduced 87 25.1%

Ownership Statistics

13F · as of 30 Jun, 2026

Institutional Ownership

115.72%

▲+5.26 pp QoQ

Shares Held by Institutions

76.30Mn

of 65.94Mn outstanding

▲+16.12% QoQ

Shares Outstanding

65.94Mn

-10.37Mn held outside 13F filers

Institutional Investors

346

filed 13F for Jun 2026

▲+33 vs prior quarter

Net Shares Added (QoQ)

+10.59Mn

accumulated since last quarter

Value of Holdings

$10.75Bn

reported market value

Shares Owned by Institutions

Shares held % of outstanding

Latest —

Average ownership —

Peak ownership —

Shares Purchased/Sold by Institutions

Accumulated Distributed

Latest quarter —

Net over range —

Accumulating quarters —

Ownership Summary

Quarter ending 30 Jun, 2026

Protagonist Therapeutics, Inc (NASDAQ:PTGX) has 346 institutional investors that have filed 13F reports for the period ending June 2026.

Collectively, these holders controlled 115.7% of Protagonist Therapeutics's outstanding shares in June 2026, up from 110.5% in March 2026.
They increased total shares held in PTGX by 16.12% quarter over quarter, and investors in Protagonist Therapeutics increased 27.21% from a year ago.
Activity in PTGX broke down as 204 buyers, 87 sellers, and 55 unchanged among 346 total holders.
Combined, these investors held 76.3Mn shares in PTGX for June 2026, up by 10.59Mn shares quarter on quarter, and up 6.39Mn shares year over year.
BlackRock, Inc. is the top holder of Protagonist Therapeutics as of June 30, 2026, with 10.31Mn shares representing 15.63% of outstanding stock.
The largest buyers of Protagonist Therapeutics for the quarter ending June 2026 were VANGUARD PORTFOLIO MANAGEMENT LLC (3.63Mn), VANGUARD CAPITAL MANAGEMENT LLC (2.85Mn), Jupiter Topco LLC (2.13Mn), Sixth Street Partners Management Company, L.P. (583.77K), BlackRock, Inc. (528.47K).
Top sellers of PTGX stock for the quarter ending June 2026 included UBS Group AG (1.78Mn), MARSHALL WACE, LLP (519.06K), DIMENSIONAL FUND ADVISORS LP (329.95K), PERCEPTIVE ADVISORS LLC (249.0K), Holocene Advisors, LP (201.42K).
Business Quant data shows the 10 biggest positions in Protagonist Therapeutics as of June 2026 are held by BlackRock, Inc. (10.31Mn), FARALLON CAPITAL MANAGEMENT, L.L.C. (6.35Mn), RTW INVESTMENTS, LP (5.06Mn), VANGUARD PORTFOLIO MANAGEMENT LLC (3.63Mn), WELLINGTON MANAGEMENT GROUP LLP (3.42Mn), UBS Group AG (3.4Mn), State Street Corp (3.32Mn), VANGUARD CAPITAL MANAGEMENT LLC (2.85Mn), Johnson & Johnson (2.45Mn), Invesco Ltd. (2.34Mn).

Form 13F Holdings

346 Institutional Holders

Report period 30 Jun, 2026

Total shares held 76.30Mn

Of outstanding 115.72%

#	Institution	CIK	Shares Held	% of Outstanding	Change (QoQ)	Change (%)	Value (USD)
1	BlackRock, Inc.	0002012383	10,307,837	15.63%	▲528,468	+5.40%	$1.26Bn
2	FARALLON CAPITAL MANAGEMENT, L.L.C.	0000909661	6,348,906	9.63%	0	0.00%	$778.25Mn
3	RTW INVESTMENTS, LP	0001493215	5,061,175	7.68%	▲2,122	+0.04%	$620.40Mn
4	VANGUARD PORTFOLIO MANAGEMENT LLC	0002100121	3,629,298	5.50%	▲3,629,298	0.00%	$444.88Mn
5	WELLINGTON MANAGEMENT GROUP LLP	0000902219	3,416,781	5.18%	▼182,863	-5.08%	$418.83Mn
6	UBS Group AG	0001610520	3,399,221	5.16%	▼1,778,575	-34.35%	$416.68Mn
7	State Street Corp	0000093751	3,321,554	5.04%	▲204,805	+6.57%	$407.16Mn
8	VANGUARD CAPITAL MANAGEMENT LLC	0002100119	2,853,394	4.33%	▲2,853,394	0.00%	$349.77Mn
9	Johnson & Johnson	0000200406	2,449,183	3.71%	0	0.00%	$300.22Mn
10	Invesco Ltd.	0000914208	2,340,667	3.55%	▲175,997	+8.13%	$286.92Mn
11	PRICE T ROWE ASSOCIATES INC /MD/	0000080255	2,149,662	3.26%	▲484,165	+29.07%	$263.51K
12	Jupiter Topco LLC	0002146052	2,129,780	3.23%	▲2,129,780	0.00%	$261.04Mn
13	GEODE CAPITAL MANAGEMENT, LLC	0001214717	1,741,209	2.64%	▲71,838	+4.30%	$213.48Mn
14	Woodline Partners LP	0001784547	1,414,173	2.14%	0	0.00%	$173.35Mn
15	Bank Of America Corp /De/	0000070858	1,324,498	2.01%	▲29,064	+2.24%	$162.36Mn
16	JENNISON ASSOCIATES LLC	0000053417	1,151,681	1.75%	▲79,670	+7.43%	$141.17Mn
17	PERCEPTIVE ADVISORS LLC	0001224962	981,879	1.49%	▼249,000	-20.23%	$120.36Mn
18	ADAR1 Capital Management, LLC	0001940272	960,863	1.46%	▼33,256	-3.35%	$117.78Mn
19	Morgan Stanley	0000895421	905,992	1.37%	▼112,230	-11.02%	$111.06Mn
20	Alyeska Investment Group, L.P.	0001453072	889,298	1.35%	▲296,101	+49.92%	$109.01Mn

Showing 1 to 20 of 346 holders