XT
PRTA icon

XTX Topco’s Prothena Corp PRTA Stock Holding History

XTX Topco’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 		$897K Buy
92,326
+37,445
+68% +$343K 0.02% 1506
2025
Q4 		$524K Buy
54,881
+39,073
+247% +$398K 0.01% 1551
2025
Q3 		$154K Buy
+15,808
New +$122K 0.01% 1928
2025
Q1 		– Sell
-18,665
Closed -$259K – 2957
2024
Q4 		$259K Buy
18,665
+3,101
+20% +$48.9K 0.02% 1345
2024
Q3 		$260K Buy
+15,564
New +$335K 0.02% 1280
2024
Q1 		– Sell
-7,264
Closed -$264K – 2220
2023
Q4 		$264K Sell
7,264
-3,848
-35% -$148K 0.06% 729
2023
Q3 		$536K Buy
+11,112
New +$660K 0.09% 357

Other funds holding PRTA

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Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
RCMNY
Rubric Capital Management (New York) New York $8.16B AUM 68.42% 1-Year Est. Return
BlackRock
BlackRock New York $5.7T AUM 30.48% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
D.E. Shaw & Co
D.E. Shaw & Co New York $127B AUM 43.98% 1-Year Est. Return
ACM
ADAR1 Capital Management Austin, Texas $1.66B AUM 340.85% 1-Year Est. Return
Acadian Asset Management
Acadian Asset Management Boston, Massachusetts $70.5B AUM 36% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
Morgan Stanley
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