Mariner
PRTA icon

Mariner’s Prothena Corp PRTA Stock Holding History

Mariner’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 		$5.47M Sell
563,082
-14,856
-3% -$136K 0.01% 1022
2025
Q4 		$5.52M Sell
577,938
-12,959
-2% -$132K 0.01% 964
2025
Q3 		$5.77M Buy
590,897
+204,189
+53% +$1.57M 0.01% 864
2025
Q2 		$2.35M Buy
386,708
+32,058
+9% +$241K ﹤0.01% 1237
2025
Q1 		$4.39M Buy
354,650
+10,733
+3% +$152K 0.01% 861
2024
Q4 		$4.76M Buy
343,917
+20,704
+6% +$327K 0.01% 815
2024
Q3 		$5.41M Buy
323,213
+125,178
+63% +$2.69M 0.01% 751
2024
Q2 		$4.09M Buy
198,035
+21,069
+12% +$456K 0.01% 805
2024
Q1 		$4.38M Sell
176,966
-1,458
-0.8% -$43.4K 0.01% 780
2023
Q4 		$6.48M Buy
178,424
+10,492
+6% +$404K 0.02% 601
2023
Q3 		$8.1M Buy
167,932
+32,870
+24% +$1.95M 0.02% 497
2023
Q2 		$9.22M Buy
135,062
+27,955
+26% +$1.8M 0.02% 461
2023
Q1 		$5.19M Buy
107,107
+80,180
+298% +$4.24M 0.02% 621
2022
Q4 		$1.62M Buy
26,927
+9,898
+58% +$580K 0.01% 1013
2022
Q3 		$1.03M Buy
17,029
+1,939
+13% +$61.3K ﹤0.01% 1033
2022
Q2 		$410K Sell
15,090
-59,040
-80% -$1.73M ﹤0.01% 1196
2022
Q1 		$2.71M Buy
74,130
+60,144
+430% +$2.17M 0.01% 649
2021
Q4 		$691K Buy
+13,986
New +$776K ﹤0.01% 929

Other funds holding PRTA

Fidelity Investments
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