Schonfeld Strategic Advisors’s Prothena Corp PRTA Stock Holding History

Schonfeld Strategic Advisors’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 Q1	$121K	Buy	+12,399	New	+$114K	﹤0.01%	1853
2025 Q3	–	Sell	-307,341	Closed	-$1.87M	–	2497
2025 Q2	$1.87M	Buy	+307,341	New	+$2.31M	0.01%	1025
2024 Q4	–	Sell	-62,272	Closed	-$1.04M	–	2308
2024 Q3	$1.04M	Buy	+62,272	New	+$1.34M	0.01%	1146
2023 Q1	–	Sell	-28,128	Closed	-$1.69M	–	2530
2022 Q4	$1.69M	Sell	28,128 -16,662	-37%	-$976K	0.01%	893
2022 Q3	$2.72M	Buy	+44,790	New	+$1.42M	0.02%	744
2022 Q1	–	Sell	-10,387	Closed	-$513K	–	2855
2021 Q4	$513K	Buy	10,387 +6,622	+176%	+$367K	﹤0.01%	1242
2021 Q3	$269K	Buy	+3,765	New	+$234K	﹤0.01%	1588

Other funds holding PRTA

Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return

RCMNY

Rubric Capital Management (New York) New York $9.44B AUM 68.42% 1-Year Est. Return

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

D.E. Shaw & Co New York $166B AUM 43.98% 1-Year Est. Return

ACM

ADAR1 Capital Management Austin, Texas $1.7B AUM 340.85% 1-Year Est. Return

Acadian Asset Management Boston, Massachusetts $70.5B AUM 36% 1-Year Est. Return

VPM

Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM

Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return

PAI

Palo Alto Investors Palo Alto, California $654M AUM 77.8% 1-Year Est. Return

Schonfeld Strategic Advisors's PRTA Position: Q1 2026 in Review

Schonfeld Strategic Advisors opened a new position in Prothena Corp (PRTA) in Q1 2026: 12,399 shares worth $121K. The stake represents ﹤0.01% of the portfolio and ranks #1853 among its holdings. This is a return to the name: Schonfeld Strategic Advisors previously reported a position in PRTA as recently as Q2 2025.

Schonfeld Strategic Advisors first reported a position in PRTA in Q3 2021 and has held it in 7 quarters since. The position peaked at $2.72M in Q3 2022. 185 funds tracked by Wall St. Rank hold PRTA as of Q1 2026.

Schonfeld Strategic Advisors held 12,399 shares of Prothena Corp worth $121K as of Q1 2026.
Prothena Corp was a new Schonfeld Strategic Advisors position in Q1 2026.
Prothena Corp made up ﹤0.01% of Schonfeld Strategic Advisors's portfolio in Q1 2026, its #1853 holding.
Schonfeld Strategic Advisors first reported a position in Prothena Corp in Q3 2021 and has held it in 7 quarters since.
Schonfeld Strategic Advisors's Prothena Corp position peaked at $2.72M in Q3 2022.
185 funds tracked by Wall St. Rank held Prothena Corp as of Q1 2026.

Based on Schonfeld Strategic Advisors's 13F filing for Q1 2026, filed 15 May 2026.