Advisory Services Network’s Prothena Corp PRTA Stock Holding History

Advisory Services Network’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	–	Sell	-30	Closed	-$292	–	4004
2026 Q1	$292	Buy	+30	New	+$275	﹤0.01%	4510
2024 Q1	–	Sell	-1,208	Closed	-$43.9K	–	3101
2023 Q4	$43.9K	Buy	+1,208	New	+$46.5K	﹤0.01%	2088
2023 Q2	–	Sell	-8	Closed	-$388	–	3082
2023 Q1	$388	Buy	+8	New	+$423	﹤0.01%	3775
2018 Q4	–	Sell	-17	Closed	–	–	2642
2018 Q3	$0	Buy	+17	New	+$246	﹤0.01%	2594
2018 Q1	–	Sell	-2	Closed	–	–	2683
2017 Q4	$0	Buy	+2	New	+$102	﹤0.01%	2602

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

Advisory Services Network's PRTA Position: Q2 2026 in Review

Advisory Services Network sold out of Prothena Corp (PRTA) in Q2 2026, closing a stake of 30 shares — an estimated $292 sold.

Advisory Services Network first reported a position in PRTA in Q4 2017 and held it in 5 quarters. The position peaked at $43.9K in Q4 2023. 188 funds tracked by Wall St. Rank hold PRTA as of Q2 2026.

Advisory Services Network reported no remaining Prothena Corp position as of Q2 2026 after selling out during the quarter.
Advisory Services Network sold 30 Prothena Corp shares in Q2 2026, an estimated $292.
Advisory Services Network first reported a position in Prothena Corp in Q4 2017 and held it in 5 quarters.
Advisory Services Network's Prothena Corp position peaked at $43.9K in Q4 2023.
188 funds tracked by Wall St. Rank held Prothena Corp as of Q2 2026.

Based on Advisory Services Network's 13F filing for Q2 2026, filed 12 Aug 2026.