Walleye Capital’s Prothena Corp PRTA Stock Holding History

Walleye Capital’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	–	Sell	-800	Closed	-$7.64K	–	4856
2025 Q4	$7.64K	Sell	800 -1,900	-70%	-$19.3K	﹤0.01%	4315
2025 Q3	$26.4K	Buy	+2,700	New	+$20.8K	﹤0.01%	4161
2025 Q1	–	Sell	-100	Closed	-$1.39K	–	4953
2024 Q4	$1.39K	Buy	+100	New	+$1.58K	﹤0.01%	4689
2024 Q3	–	Sell	-8,300	Closed	-$171K	–	5751
2024 Q2	$171K	Buy	8,300 +3,900	+89%	+$84.4K	﹤0.01%	4415
2024 Q1	$109K	Buy	+4,400	New	+$131K	﹤0.01%	4349
2023 Q4	–	Sell	-700	Closed	-$33.8K	–	5390
2023 Q3	$33.8K	Buy	700 +400	+133%	+$23.8K	﹤0.01%	4285
2023 Q2	$20.5K	Buy	+300	New	+$19.4K	﹤0.01%	3796

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

Walleye Capital's PRTA Position: Q1 2026 in Review

Walleye Capital increased its Prothena Corp (PRTA) stake by 78% in Q1 2026, buying an estimated $1.11M and bringing the position to 277,168 shares worth $2.69M. The position accounts for 0.01% of the portfolio, ranked #1226.

Walleye Capital first reported a position in PRTA in Q1 2019 and has held it in 10 quarters since. The position peaked at $3.8M in Q2 2023. 185 funds tracked by Wall St. Rank hold PRTA as of Q1 2026.

Walleye Capital held 277,168 shares of Prothena Corp worth $2.69M as of Q1 2026.
Walleye Capital bought 121,133 Prothena Corp shares in Q1 2026, an estimated $1.11M.
Prothena Corp made up 0.01% of Walleye Capital's portfolio in Q1 2026, its #1226 holding.
Walleye Capital first reported a position in Prothena Corp in Q1 2019 and has held it in 10 quarters since.
Walleye Capital's Prothena Corp position peaked at $3.8M in Q2 2023.
185 funds tracked by Wall St. Rank held Prothena Corp as of Q1 2026.

Based on Walleye Capital's 13F filing for Q1 2026, filed 11 May 2026.