Jump Financial’s Prothena Corp PRTA Stock Holding History

Jump Financial’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	$133K	Sell	13,546 -105,390	-89%	-$1.04M	﹤0.01%	1892
2026 Q1	$1.16M	Sell	118,936 -118,892	-50%	-$1.09M	0.02%	865
2025 Q4	$2.27M	Buy	237,828 +51,581	+28%	+$525K	0.03%	623
2025 Q3	$1.82M	Buy	+186,247	New	+$1.43M	0.02%	769
2024 Q4	–	Sell	-32,407	Closed	-$542K	–	1932
2024 Q3	$542K	Sell	32,407 -10,393	-24%	-$223K	0.01%	1068
2024 Q2	$883K	Buy	42,800 +14,849	+53%	+$321K	0.02%	876
2024 Q1	$692K	Buy	27,951 +21,494	+333%	+$639K	0.02%	1007
2023 Q4	$235K	Sell	6,457 -56,660	-90%	-$2.18M	0.01%	1476
2023 Q3	$3.05M	Buy	63,117 +39,486	+167%	+$2.35M	0.11%	232
2023 Q2	$1.61M	Sell	23,631 -9,340	-28%	-$602K	0.06%	462
2023 Q1	$1.6M	Buy	+32,971	New	+$1.74M	0.07%	428
2022 Q1	–	Sell	-39,000	Closed	-$1.93M	–	1836
2021 Q4	$1.93M	Buy	39,000 +11,200	+40%	+$621K	0.12%	216
2021 Q3	$1.98M	Buy	+27,800	New	+$1.73M	0.14%	153
2021 Q1	–	Sell	-12,400	Closed	-$149K	–	1215
2020 Q4	$149K	Buy	+12,400	New	+$147K	0.03%	825

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

Jump Financial's PRTA Position: Q2 2026 in Review

Jump Financial reduced its Prothena Corp (PRTA) stake by 89% in Q2 2026, selling an estimated $1.04M and leaving 13,546 shares worth $133K. The position accounts for ﹤0.01% of the portfolio, ranked #1892.

Jump Financial first reported a position in PRTA in Q4 2020 and has held it in 14 quarters since. The position peaked at $3.05M in Q3 2023. 187 funds tracked by Wall St. Rank hold PRTA as of Q2 2026.

Jump Financial held 13,546 shares of Prothena Corp worth $133K as of Q2 2026.
Jump Financial sold 105,390 Prothena Corp shares in Q2 2026, an estimated $1.04M.
Prothena Corp made up ﹤0.01% of Jump Financial's portfolio in Q2 2026, its #1892 holding.
Jump Financial first reported a position in Prothena Corp in Q4 2020 and has held it in 14 quarters since.
Jump Financial's Prothena Corp position peaked at $3.05M in Q3 2023.
187 funds tracked by Wall St. Rank held Prothena Corp as of Q2 2026.

Based on Jump Financial's 13F filing for Q2 2026, filed 13 Aug 2026.