MAM
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Martingale Asset Management’s Prothena Corp PRTA Stock Holding History

Martingale Asset Management’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 		$672K Buy
69,101
+5,648
+9% +$51.8K 0.02% 585
2025
Q4 		$606K Buy
+63,453
New +$646K 0.02% 571
2023
Q4 		– Sell
-12,415
Closed -$599K – 837
2023
Q3 		$599K Buy
12,415
+1,097
+10% +$65.2K 0.01% 567
2023
Q2 		$773K Buy
+11,318
New +$730K 0.02% 520
2020
Q4 		– Sell
-44,635
Closed -$446K – 1015
2020
Q3 		$446K Sell
44,635
-60,700
-58% -$730K 0.01% 841
2020
Q2 		$1.1M Buy
+105,335
New +$1.17M 0.01% 711
2015
Q2 		– Sell
-7,301
Closed -$279K – 895
2015
Q1 		$279K Buy
+7,301
New +$187K 0.01% 791

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RCMNY
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BlackRock
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State Street
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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