Question 1

Does Jane Street Group own PTGX stock?

Accepted Answer

Yes. As of its Q2 2026 13F, Jane Street Group holds 16,882 shares of PTGX (Protagonist Therapeutics), worth $2.1M.

Question 2

How many shares of PTGX does Jane Street Group own?

Accepted Answer

As of its Q2 2026 13F, Jane Street Group holds 16,882 shares of PTGX (Protagonist Therapeutics).

Question 3

What is Jane Street Group's PTGX position worth?

Accepted Answer

As of its Q2 2026 13F, Jane Street Group's PTGX position is worth $2.1M.

Question 4

Is Jane Street Group buying or selling PTGX?

Accepted Answer

In Q2 2026, Jane Street Group increased its PTGX position from 3,607 to 16,882 shares.

Question 5

When did Jane Street Group first buy PTGX?

Accepted Answer

Jane Street Group first reported PTGX in its Q3 2020 13F and has listed it in 20 quarterly 13F filings.

Quarter	Action	Shares	Change	Value	Weight	Price	Conviction
2026-Q2 Latest	Increased	16,882	+368.0%	$2.1M	0.0%	$122.58	42
2026-Q1	Decreased	3,607	-89.5%	$380,178	0.0%	$105.40	0
2025-Q4	Decreased	34,307	-22.6%	$3M	0.0%	$87.34	0
2025-Q3	New	44,339	—	$2.9M	0.0%	$66.43	36
2025-Q2	Exited	0	-100.0%	$0	0.0%	$55.27	0
2025-Q1	Increased	193,300	+214.1%	$9.3M	0.0%	$48.36	45
2024-Q4	Increased	61,551	+87.3%	$2.4M	0.0%	$38.60	41
2024-Q3	Decreased	32,858	-80.6%	$1.5M	0.0%	$45.00	0