Question 1

How many shares of PRTA does TWO SIGMA INVESTMENTS, LP own?

Accepted Answer

As of 2026-Q2, TWO SIGMA INVESTMENTS, LP holds 1.3M shares of PRTA (PROTHENA CORP PLC).

Question 2

What is TWO SIGMA INVESTMENTS, LP's PRTA position worth?

Accepted Answer

As of 2026-Q2, TWO SIGMA INVESTMENTS, LP's PRTA position is worth $12.4M.

Question 3

Is TWO SIGMA INVESTMENTS, LP buying or selling PRTA?

Accepted Answer

In 2026-Q2, TWO SIGMA INVESTMENTS, LP increased their PRTA position (+4.9% change in shares).

Question 4

When did TWO SIGMA INVESTMENTS, LP first buy PRTA?

Accepted Answer

Based on available 13F filings, TWO SIGMA INVESTMENTS, LP first reported a position in PRTA in 2024-Q3. They have held the position across 30 quarters.

Quarter	Action	Shares	Change	Value	Weight	Price	Conviction
2026-Q2 Latest	Increased	1.3M	+4.9%	$12.4M	0.0%	$9.79	29
2026-Q1	Increased	1.2M	+80.0%	$11.7M	0.0%	$9.36	43
2025-Q4	Increased	670,138	+57.1%	$6.4M	0.0%	$9.31	39
2025-Q3	Increased	426,605	+111.8%	$4.2M	0.0%	$9.76	43
2025-Q2	Increased	201,450	+1156.5%	$1.2M	0.0%	$6.08	41
2025-Q1	Decreased	16,033	-58.2%	$198,408	0.0%	$13.14	0
2024-Q4	Increased	38,394	+265.4%	$531,757	0.0%	$14.88	39
2024-Q3	Decreased	10,507	-85.3%	$175,782	0.0%	$20.05	0