Steward Partners Investment Advisory’s Prothena Corp PRTA Stock Holding History

Steward Partners Investment Advisory’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	$39	Sell	4 -2	-33%	-$20	﹤0.01%	4596
2026 Q1	$58	Hold	6	–	–	﹤0.01%	4359
2025 Q4	$57	Hold	6	–	–	﹤0.01%	4246
2025 Q3	$59	Hold	6	–	–	﹤0.01%	4207
2025 Q2	$36	Buy	+6	New	+$45	﹤0.01%	4073
2021 Q4	–	Sell	-25	Closed	-$2K	–	3288
2021 Q3	$2K	Hold	25	–	–	﹤0.01%	3003
2021 Q2	$1K	Hold	25	–	–	﹤0.01%	6986
2021 Q1	$628	Hold	25	–	–	﹤0.01%	3339
2020 Q4	$0	Hold	25	–	–	﹤0.01%	2967
2020 Q3	$0	Hold	25	–	–	﹤0.01%	2825
2020 Q2	$0	Hold	25	–	–	﹤0.01%	2729
2020 Q1	$0	Sell	25 -500	-95%	-$6.06K	﹤0.01%	2652
2019 Q4	$8K	Hold	525	–	–	﹤0.01%	2098
2019 Q3	$4K	Buy	525 +25	+5%	+$222	﹤0.01%	2311
2019 Q2	$5K	Buy	+500	New	+$5.13K	﹤0.01%	2233
2018 Q4	–	Sell	-500	Closed	-$7K	–	1791
2018 Q3	$7K	Buy	+500	New	+$7.22K	﹤0.01%	2026

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

Steward Partners Investment Advisory's PRTA Position: Q2 2026 in Review

Steward Partners Investment Advisory reduced its Prothena Corp (PRTA) stake by 33% in Q2 2026, selling an estimated $20 and leaving 4 shares worth $39. The position accounts for ﹤0.01% of the portfolio, ranked #4596.

Steward Partners Investment Advisory first reported a position in PRTA in Q3 2018 and has held it in 16 quarters since. The position peaked at $8K in Q4 2019. 188 funds tracked by Wall St. Rank hold PRTA as of Q2 2026.

Steward Partners Investment Advisory held 4 shares of Prothena Corp worth $39 as of Q2 2026.
Steward Partners Investment Advisory sold 2 Prothena Corp shares in Q2 2026, an estimated $20.
Prothena Corp made up ﹤0.01% of Steward Partners Investment Advisory's portfolio in Q2 2026, its #4596 holding.
Steward Partners Investment Advisory first reported a position in Prothena Corp in Q3 2018 and has held it in 16 quarters since.
Steward Partners Investment Advisory's Prothena Corp position peaked at $8K in Q4 2019.
188 funds tracked by Wall St. Rank held Prothena Corp as of Q2 2026.

Based on Steward Partners Investment Advisory's 13F filing for Q2 2026, filed 13 Aug 2026.