Key Financial Inc’s Prothena Corp PRTA Stock Holding History

Key Financial Inc’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	$117	Hold	12	–	–	﹤0.01%	1322
2026 Q1	$117	Hold	12	–	–	﹤0.01%	1357
2025 Q4	$115	Hold	12	–	–	﹤0.01%	1403
2025 Q3	$119	Hold	12	–	–	﹤0.01%	1421
2025 Q2	$73	Hold	12	–	–	﹤0.01%	1410
2025 Q1	$148	Hold	12	–	–	﹤0.01%	1346
2024 Q4	$166	Hold	12	–	–	﹤0.01%	1342
2024 Q3	$201	Hold	12	–	–	﹤0.01%	1309
2024 Q2	$248	Buy	+12	New	+$260	﹤0.01%	1290
2021 Q1	–	Sell	-24	Closed	–	–	796
2020 Q4	$0	Buy	+24	New	+$284	﹤0.01%	735
2020 Q2	–	Sell	-24	Closed	–	–	479
2020 Q1	$0	Buy	+24	New	+$291	﹤0.01%	714

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

Key Financial Inc's PRTA Position: Q2 2026 in Review

Key Financial Inc held its Prothena Corp (PRTA) position steady in Q2 2026 at 12 shares worth $117. The position accounts for ﹤0.01% of the portfolio, ranked #1322.

Key Financial Inc first reported a position in PRTA in Q1 2020 and has held it in 11 quarters since. The position peaked at $248 in Q2 2024. 187 funds tracked by Wall St. Rank hold PRTA as of Q2 2026.

Key Financial Inc held 12 shares of Prothena Corp worth $117 as of Q2 2026.
Key Financial Inc left its Prothena Corp share count unchanged in Q2 2026.
Prothena Corp made up ﹤0.01% of Key Financial Inc's portfolio in Q2 2026, its #1322 holding.
Key Financial Inc first reported a position in Prothena Corp in Q1 2020 and has held it in 11 quarters since.
Key Financial Inc's Prothena Corp position peaked at $248 in Q2 2024.
187 funds tracked by Wall St. Rank held Prothena Corp as of Q2 2026.

Based on Key Financial Inc's 13F filing for Q2 2026, filed 24 Jul 2026.