Asset Dedication LLC’s Prothena Corp PRTA Stock Holding History

Asset Dedication LLC’s Portfolio PRTA Stock Details PRTA Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q2	$1.8K	Hold	184	–	–	﹤0.01%	1051
2026 Q1	$1.79K	Hold	184	–	–	﹤0.01%	975
2025 Q4	$1.76K	Hold	184	–	–	﹤0.01%	1013
2025 Q3	$1.8K	Hold	184	–	–	﹤0.01%	1025
2025 Q2	$1.12K	Hold	184	–	–	﹤0.01%	1080
2025 Q1	$2.28K	Hold	184	–	–	﹤0.01%	952
2024 Q4	$2.55K	Hold	184	–	–	﹤0.01%	947
2024 Q3	$3.08K	Hold	184	–	–	﹤0.01%	976
2024 Q2	$3.8K	Hold	184	–	–	﹤0.01%	976
2024 Q1	$5K	Hold	184	–	–	﹤0.01%	796
2023 Q4	$7K	Hold	184	–	–	﹤0.01%	742
2023 Q3	$9K	Hold	184	–	–	﹤0.01%	698
2023 Q2	$13K	Hold	184	–	–	﹤0.01%	632
2023 Q1	$9K	Hold	184	–	–	﹤0.01%	680
2022 Q4	$11K	Hold	184	–	–	﹤0.01%	649
2022 Q3	$11K	Hold	184	–	–	﹤0.01%	618
2022 Q2	$5K	Hold	184	–	–	﹤0.01%	398
2022 Q1	$7K	Hold	184	–	–	﹤0.01%	702
2021 Q4	$9K	Hold	184	–	–	﹤0.01%	662
2021 Q3	$13K	Hold	184	–	–	﹤0.01%	644
2021 Q2	$9K	Hold	184	–	–	﹤0.01%	644
2021 Q1	$5K	Hold	184	–	–	﹤0.01%	560
2020 Q4	$2K	Hold	184	–	–	﹤0.01%	714
2020 Q3	$2K	Hold	184	–	–	﹤0.01%	688
2020 Q2	$2K	Hold	184	–	–	﹤0.01%	593
2020 Q1	$2K	Hold	184	–	–	﹤0.01%	585
2019 Q4	$3K	Hold	184	–	–	﹤0.01%	592
2019 Q3	$1K	Hold	184	–	–	﹤0.01%	587
2019 Q2	$2K	Hold	184	–	–	﹤0.01%	559
2019 Q1	$2K	Buy	+184	New	+$2.3K	﹤0.01%	585

Other funds holding PRTA

Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return

RCMNY

Rubric Capital Management (New York) New York $10.9B AUM 70.31% 1-Year Est. Return

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

Acadian Asset Management Boston, Massachusetts $84.2B AUM 55.88% 1-Year Est. Return

Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

D.E. Shaw & Co New York $210B AUM 57.28% 1-Year Est. Return

ACM

ADAR1 Capital Management Austin, Texas $2.19B AUM 374.99% 1-Year Est. Return

Two Sigma Investments New York $138B AUM 41.87% 1-Year Est. Return

PAI

Palo Alto Investors Palo Alto, California $724M AUM 96.91% 1-Year Est. Return

Asset Dedication LLC's PRTA Position: Q2 2026 in Review

Asset Dedication LLC held its Prothena Corp (PRTA) position steady in Q2 2026 at 184 shares worth $1.8K. The position accounts for ﹤0.01% of the portfolio, ranked #1051.

Asset Dedication LLC first reported a position in PRTA in Q1 2019 and has held it in 30 quarters since. The position peaked at $13K in Q2 2023. 188 funds tracked by Wall St. Rank hold PRTA as of Q2 2026.

Asset Dedication LLC held 184 shares of Prothena Corp worth $1.8K as of Q2 2026.
Asset Dedication LLC left its Prothena Corp share count unchanged in Q2 2026.
Prothena Corp made up ﹤0.01% of Asset Dedication LLC's portfolio in Q2 2026, its #1051 holding.
Asset Dedication LLC first reported a position in Prothena Corp in Q1 2019 and has held it in 30 quarters since.
Asset Dedication LLC's Prothena Corp position peaked at $13K in Q2 2023.
188 funds tracked by Wall St. Rank held Prothena Corp as of Q2 2026.

Based on Asset Dedication LLC's 13F filing for Q2 2026, filed 30 Jul 2026.