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PTGX in the 13F filings

Protagonist Therapeutics Inc · CUSIP 74366E102

Sector · Pharmaceuticals and biotechnologyTheme · Healthcare: biopharma and medtech· L3VLUP-definedTheme · Pharmaceutical preparations
Quarter
Q2 2026Q1 2026Q4 2025Q3 2025Q2 2025Q1 2025Q4 2024Q3 2024Q2 2024Q1 2024Q4 2023Q3 2023
Quarter end
30 Jun 2026
the date the book describes
Filed
27 Oct 2026
latest of these filings; the earliest 3 Aug 2026
Managers listing it
24
at least, of 95 tracked, among listed positions
Comparable managers
91
filed both Q1 2026 and Q2 2026; 9 listed it in both
Shares listed
19,213,456
combined, among listed positions
Reported value
$2.4bn
combined, at the quarter end

AllianceBernstein LP. Values in this filing are at the previous quarter end's prices; its share count is the quarter end's.

Among the 91 comparable managers: 14 buyers (opened or added shares) and 10 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was -2,468,482.

Managers listing PTGX in Q2 2026

Share of 13F value is the position’s reported value over everything the manager reported that quarter. The share change is against Q1 2026, and only where both filings list the position. A rise in value with no rise in shares is the price, not buying.

24 of 24 holders

ActionFiling
Farallon Capital Management LLC6,348,906$778m3.59%Held014 Aug 2026 (the filing on sec.gov)
Wellington Management Group LLP3,416,781$419m0.07%Trimmed-182,86314 Aug 2026 (the filing on sec.gov)
Invesco Ltd2,340,667$287munder 0.1%Added+175,99714 Aug 2026 (the filing on sec.gov)
T. Rowe Price Associates Inc2,149,662$264munder 0.1%Added+484,16514 Aug 2026 (the filing on sec.gov)
Janus Henderson Group Ltd2,129,780$261m0.11%Trimmed-761,74714 Aug 2026 (the filing on sec.gov)
Woodline Partners LP1,414,173$173m0.54%Held014 Aug 2026 (the filing on sec.gov)
Fidelity (FMR LLC)672,186$82munder 0.1%Added+10,18913 Aug 2026 (the filing on sec.gov)
Neuberger Berman Group LLC302,427$37munder 0.1%Added+160,98627 Oct 2026 (the filing on sec.gov)
Marshall Wace LLP109,017$13munder 0.1%Trimmed-519,05813 Aug 2026 (the filing on sec.gov)
AllianceBernstein LP79,563$8.4munder 0.1%Added+5,77314 Aug 2026 (the filing on sec.gov)
Susquehanna International Group LLP57,062$7.0munder 0.1%Trimmed-110,51414 Aug 2026 (the filing on sec.gov)
Arrowstreet Capital LP44,529$5.5munder 0.1%Newnew13 Aug 2026 (the filing on sec.gov)
Schonfeld Strategic Advisors LLC28,072$3.4munder 0.1%Newnew14 Aug 2026 (the filing on sec.gov)
Brevan Howard Capital Management LP25,270$3.1munder 0.1%Newnew14 Aug 2026 (the filing on sec.gov)
Polen Capital Management LLC22,651$2.8munder 0.1%Trimmed-1,6864 Aug 2026 (the filing on sec.gov)
Jane Street Group LLC16,882$2.1munder 0.1%Added+13,27514 Aug 2026 (the filing on sec.gov)
AQR Capital Management LLC13,096$1.6munder 0.1%Added+1,22214 Aug 2026 (the filing on sec.gov)
Winton Group Ltd10,884$1.3munder 0.1%Trimmed-1,7897 Aug 2026 (the filing on sec.gov)
Verition Fund Management LLC10,143$1.2munder 0.1%Newnew14 Aug 2026 (the filing on sec.gov)
Bridgewater Associates LP9,269$1.1munder 0.1%Added+3,99314 Aug 2026 (the filing on sec.gov)
Holocene Advisors LP8,495$1.0munder 0.1%Trimmed-201,42114 Aug 2026 (the filing on sec.gov)
Balyasny Asset Management LLC3,598$441kunder 0.1%Trimmed-97,70114 Aug 2026 (the filing on sec.gov)
Quantbot Technologies LP342$42kunder 0.1%Newnew12 Aug 2026 (the filing on sec.gov)
Walleye Capital LLC1$00.00%Newnew3 Aug 2026 (the filing on sec.gov)

Largest increases and reductions, by shares

Q1 2026 to Q2 2026, among managers that listed it in both quarters or opened it.

Increases

Reductions

New positions and exits

At least these many: a manager is shown exiting only where its own filing shows the position gone.

New (6)

Exited (2)

Ownership over time

Every quarter on file. A quarter-end value moves with the price as well as with the shares held; buyers and sellers count comparable managers, by shares.
3 in Q3 2024 to 7 in Q2 2026

Tracked managers listing it, at least.

0358102017201820192020202120222023202420252026
the quarter shown share split complete books; unmarked quarters rest on listed positionsClick a quarter to open it.
PTGX by quarter
QuarterHoldersReported valueBuyersSellers
Q1 20171$231kn.a.n.a.
Q2 20171$197kn.a.n.a.
Q3 20171$458kn.a.n.a.
Q4 20172$19mn.a.n.a.
Q1 20181$8.7mn.a.n.a.
Q2 20182$6.5mn.a.n.a.
Q3 20181$23mn.a.n.a.
Q4 20182$15mn.a.n.a.
Q1 20192$23mn.a.n.a.
Q2 20193$20mn.a.n.a.
Q3 20192$18mn.a.n.a.
Q4 20191$11mn.a.n.a.
Q1 20201$11mn.a.n.a.
Q2 20202$48mn.a.n.a.
Q3 20201$54mn.a.n.a.
Q4 20202$60mn.a.n.a.
Q1 20212$87mn.a.n.a.
Q2 20212$156mn.a.n.a.
Q3 20214$130mn.a.n.a.
Q4 20214$169mn.a.n.a.
Q1 20223$110mn.a.n.a.
Q2 20225$67mn.a.n.a.
Q3 20223$53mn.a.n.a.
Q4 20225$52mn.a.n.a.
Q1 20234$116mn.a.n.a.
Q2 20235$171mn.a.n.a.
Q3 20232$109mn.a.n.a.
Q4 20232$191m20
Q1 20245$248m41
Q2 20243$262m22
Q3 20243$286m21
Q4 20244$253m30
Q1 20254$354m31
Q2 20255$425m41
Q3 20258$790m80
Q4 202510$1.3bn1414
Q1 20269$1.8bn1610
Q2 20267$1.9bn1410

Compare with…

Holders over time, buyers and sellers, and the managers holding both, side by side for up to four stocks.

PTGX and LLY →PTGX and JNJ →PTGX and VRTX →Choose a stock to compare with PTGX →

How much of the picture this is

A 13F is a manager’s long US-listed equity book at a quarter end, filed up to 45 days later. It shows no shorts, cash, bonds or performance, and it is never today’s portfolio. Large books are listed to their largest positions, so a manager missing from this table may still hold a small position below that line. These are 95 tracked managers, not the institutional market.

Which funds own PTGX, latest filings →Back to the 13F Explorer →