Question 1

Does The Manufacturers Life Insurance own PRTA stock?

Accepted Answer

Yes. As of its Q2 2026 13F, The Manufacturers Life Insurance holds 12,635 shares of PRTA (Prothena), worth $123,697.

Question 2

How many shares of PRTA does The Manufacturers Life Insurance own?

Accepted Answer

As of its Q2 2026 13F, The Manufacturers Life Insurance holds 12,635 shares of PRTA (Prothena).

Question 3

What is The Manufacturers Life Insurance's PRTA position worth?

Accepted Answer

As of its Q2 2026 13F, The Manufacturers Life Insurance's PRTA position is worth $123,697.

Question 4

Is The Manufacturers Life Insurance buying or selling PRTA?

Accepted Answer

In Q2 2026, The Manufacturers Life Insurance increased its PRTA position by 451 shares (+3.7%).

Question 5

When did The Manufacturers Life Insurance first buy PRTA?

Accepted Answer

The Manufacturers Life Insurance already held PRTA in its Q4 2018 13F, the earliest on record, and has listed it in 31 quarterly 13F filings.

Quarter	Action	Shares	Change	Value	Weight	Price	Conviction
2026-Q2 Latest	Increased	12,635	+3.7%	$123,697	0.0%	$9.79	23
2026-Q1	Decreased	12,184	-11.0%	$118,428	0.0%	$9.72	0
2025-Q4	Decreased	13,695	-1.2%	$130,787	0.0%	$9.55	0
2025-Q3	Decreased	13,867	-8.4%	$135,342	0.0%	$9.76	0
2025-Q2	Decreased	15,140	-76.8%	$91,900	0.0%	$6.07	0
2025-Q1	Decreased	65,231	-7.1%	$807,234	0.0%	$12.38	0
2024-Q4	Decreased	70,184	-18.5%	$972,048	0.0%	$13.85	0
2024-Q3	Increased	86,071	+3.8%	$1.4M	0.0%	$16.73	26
2024-Q2	Increased	82,908	+0.4%	$1.7M	0.0%	$20.64	26
2024-Q1	Decreased	82,581	-3.5%	$2M	0.0%	$24.77	0
2023-Q4	Increased	85,622	+4.4%	$3.1M	0.0%	$36.34	28
2023-Q3	Increased	82,031	+25.4%	$4M	0.0%	$48.25	33
2023-Q2	Increased	65,410	+14.8%	$4.5M	0.0%	$68.28	31
2023-Q1	Increased	56,966	+3.5%	$2.8M	0.0%	$48.47	27
2022-Q4	Increased	55,062	+3.8%	$3.3M	0.0%	$60.25	28
2022-Q3	Decreased	53,031	-0.6%	$3.2M	0.0%	$60.63	0
2022-Q2	Decreased	53,336	-2.4%	$1.4M	0.0%	$27.15	0
2022-Q1	Increased	54,643	+214.7%	$2M	0.0%	$36.57	42
2021-Q4	Increased	17,366	+0.5%	$858,000	0.0%	$49.40	25
2021-Q3	Decreased	17,283	-7.3%	$1.2M	0.0%	$71.23	0
2021-Q2	Increased	18,654	+8.3%	$959,000	0.0%	$51.41	27
2021-Q1	Decreased	17,225	-9.9%	$433,000	0.0%	$25.12	0
2020-Q4	Increased	19,109	+4.1%	$229,000	0.0%	$12.01	24
2020-Q3	Unchanged	18,359	0.0%	$183,000	0.0%	$9.99	0
2020-Q2	Decreased	18,359	-26.9%	$189,000	0.0%	$10.46	0
2020-Q1	Increased	25,116	+5.2%	$269,000	0.0%	$10.70	25
2019-Q4	Decreased	23,865	-7.5%	$308,000	0.0%	$15.83	0
2019-Q3	Unchanged	25,805	0.0%	$201,000	0.0%	$7.84	0
2019-Q2	Decreased	25,805	-2.1%	$273,000	0.0%	$10.57	0
2019-Q1	Increased	26,367	+111.1%	$320,000	0.0%	$12.13	38
2018-Q4	First report	12,488	-	$129,000	0.0%	$10.30	0