Does State Street own PTGX stock?

Yes. As of its Q2 2026 13F, State Street holds 3,321,554 shares of PTGX (Protagonist Therapeutics), worth $407.2M.

How many shares of PTGX does State Street own?

As of its Q2 2026 13F, State Street holds 3,321,554 shares of PTGX (Protagonist Therapeutics).

As of its Q2 2026 13F, State Street's PTGX position is worth $407.2M.

In Q2 2026, State Street increased its PTGX position by 204,805 shares (+6.6%).

State Street already held PTGX in its Q3 2019 13F, the earliest on record, and has listed it in 28 quarterly 13F filings.

Position history for STATE STREET CORP's holdings in PROTAGONIST THERAPEUTICS INC

Current Value

$407.2M

Current Shares

3.3M

Total Value Change

+$403.4M

Total Shares Change

+3M

Quarter-by-Quarter History

Quarter	Action	Shares	Change	Value	Weight	Price	Conviction
2026-Q2 Latest	Increased	3.3M	+6.6%	$407.2M	0.0%	$122.58	33
2026-Q1	Decreased	3.1M	-2.6%	$328.5M	0.0%	$105.40	0
2025-Q4	Increased	3.2M	+1.1%	$279.5M	0.0%	$87.34	31
2025-Q3	Decreased	3.2M	-1.3%	$210.3M	0.0%	$66.43	0
2025-Q2	Increased	3.2M	+18.5%	$177.3M	0.0%	$55.27	36
2025-Q1	Decreased	2.7M	-18.8%	$130.9M	0.0%	$48.36	0
2024-Q4	Increased	3.3M	+4.6%	$128.6M	0.0%	$38.60	32
2024-Q3	Increased	3.2M	+52.9%	$143.3M	0.0%	$45.00	42
2024-Q2	Decreased	2.1M	-36.4%	$72.2M	0.0%	$34.65	0
2024-Q1	Increased	3.3M	+19.9%	$94.7M	0.0%	$28.93	35
2023-Q4	Decreased	2.7M	-30.8%	$62.6M	0.0%	$22.93	0
2023-Q3	Increased	3.9M	+11.0%	$65.8M	0.0%	$16.68	33
2023-Q2	Increased	3.6M	+47.2%	$98.1M	0.0%	$27.62	41
2023-Q1	Decreased	2.4M	-36.4%	$55.5M	0.0%	$23.00	0
2022-Q4	Decreased	3.8M	-18.9%	$41.4M	0.0%	$10.91	0
2022-Q3	Decreased	4.7M	-31.0%	$39.4M	0.0%	$8.43	0
2022-Q2	Increased	6.8M	+108.1%	$53.6M	0.0%	$7.91	47
2022-Q1	Increased	3.3M	+26.6%	$77.1M	0.0%	$23.68	37
2021-Q4	Increased	2.6M	+27.7%	$87.9M	0.0%	$34.20	37
2021-Q3	Increased	2M	+38.5%	$35.7M	0.0%	$17.72	38
2021-Q2	Decreased	1.5M	-15.1%	$65.3M	0.0%	$44.88	0
2021-Q1	Increased	1.7M	+15.4%	$44.4M	0.0%	$25.90	34
2020-Q4	Increased	1.5M	+28.6%	$29.9M	0.0%	$20.16	36
2020-Q3	Increased	1.2M	+201.5%	$22.6M	0.0%	$19.55	46
2020-Q2	Increased	382,894	+20.5%	$6.8M	0.0%	$17.66	32
2020-Q1	Decreased	317,792	-6.0%	$2.2M	0.0%	$7.06	0
2019-Q4	Increased	338,170	+7.3%	$2.4M	0.0%	$7.05	28
2019-Q3	First report	315,043	-	$3.8M	0.0%	$12.01	0