Question 1

How many shares of PRTA does MORGAN STANLEY own?

Accepted Answer

As of 2026-Q2, MORGAN STANLEY holds 995,348 shares of PRTA (PROTHENA CORP PLC).

Question 2

What is MORGAN STANLEY's PRTA position worth?

Accepted Answer

As of 2026-Q2, MORGAN STANLEY's PRTA position is worth $9.7M.

Question 3

Is MORGAN STANLEY buying or selling PRTA?

Accepted Answer

In 2026-Q2, MORGAN STANLEY decreased their PRTA position (-19.1% change in shares).

Question 4

When did MORGAN STANLEY first buy PRTA?

Accepted Answer

Based on available 13F filings, MORGAN STANLEY first reported a position in PRTA in 2024-Q2. They have held the position across 9 quarters.

Quarter	Action	Shares	Change	Value	Weight	Price	Conviction
2026-Q2 Latest	Decreased	995,348	-19.1%	$9.7M	0.0%	$9.79	0
2026-Q1	Decreased	1.2M	-1.3%	$12M	0.0%	$9.72	0
2025-Q4	Increased	1.2M	+55.9%	$11.9M	0.0%	$9.55	39
2025-Q3	Decreased	799,674	-16.1%	$7.8M	0.0%	$9.76	0
2025-Q2	Increased	953,256	+32.4%	$5.8M	0.0%	$6.07	35
2025-Q1	Increased	719,988	+0.1%	$8.9M	0.0%	$12.38	27
2024-Q4	Increased	719,490	+0.0%	$10M	0.0%	$13.85	28
2024-Q3	Decreased	719,287	-11.3%	$12M	0.0%	$16.73	0
2024-Q2	First report	810,703	-	$16.7M	0.0%	$20.64	0

PRTA9 quarters

PRTA
9 quarters