First Manhattan’s Prothena Corp PRTA Stock Holding History

First Manhattan’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
2024 Q2	–	Sell	-3	Closed	-$74	–	1130
2024 Q1	$74	Buy	+3	New	+$89	﹤0.01%	1393
2023 Q3	–	Sell	-374	Closed	-$25.5K	–	1552
2023 Q2	$25.5K	Hold	374	–	–	﹤0.01%	991
2023 Q1	$18.1K	Sell	374 -3	-0.8%	-$158	﹤0.01%	1107
2022 Q4	$22.7K	Buy	+377	New	+$22.1K	﹤0.01%	1083
2020 Q1	–	Sell	-99	Closed	-$1K	–	1436
2019 Q4	$1K	Hold	99	–	–	﹤0.01%	1277
2019 Q3	$0	Hold	99	–	–	﹤0.01%	1385
2019 Q2	$1K	Hold	99	–	–	﹤0.01%	1338
2019 Q1	$1K	Hold	99	–	–	﹤0.01%	1359
2018 Q4	$1K	Sell	99 -101	-51%	-$1.2K	﹤0.01%	1336
2018 Q3	$2K	Buy	+200	New	+$2.89K	﹤0.01%	1345
2018 Q1	–	Sell	-107,200	Closed	-$4.02M	–	1441
2017 Q4	$4.02M	Buy	107,200 +57,200	+114%	+$2.91M	0.02%	290
2017 Q3	$3.24M	Hold	50,000	–	–	0.02%	307
2017 Q2	$2.71M	Hold	50,000	–	–	0.02%	321
2017 Q1	$2.79M	Hold	50,000	–	–	0.02%	310
2016 Q4	$2.46M	Buy	+50,000	New	+$2.76M	0.02%	309

Other funds holding PRTA

EcoR1 Capital San Francisco, California $2.36B AUM 204.53% 1-Year Est. Return

Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return

T. Rowe Price Associates Baltimore, Maryland $865B AUM 30.76% 1-Year Est. Return

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

Wellington Management Group Boston, Massachusetts $535B AUM 26.23% 1-Year Est. Return

State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

PAI

Palo Alto Investors Palo Alto, California $654M AUM 77.8% 1-Year Est. Return

Armistice Capital New York $5.62B AUM 36.06% 1-Year Est. Return

Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return

Janus Henderson Group London, United Kingdom $209B AUM 37.72% 1-Year Est. Return

First Manhattan's PRTA Position: Q2 2024 in Review

First Manhattan sold out of Prothena Corp (PRTA) in Q2 2024, closing a stake of 3 shares — an estimated $74 sold.

First Manhattan first reported a position in PRTA in Q4 2016 and held it in 15 quarters. The position peaked at $4.02M in Q4 2017. 160 funds tracked by Wall St. Rank hold PRTA as of Q2 2024.

First Manhattan reported no remaining Prothena Corp position as of Q2 2024 after selling out during the quarter.
First Manhattan sold 3 Prothena Corp shares in Q2 2024, an estimated $74.
First Manhattan first reported a position in Prothena Corp in Q4 2016 and held it in 15 quarters.
First Manhattan's Prothena Corp position peaked at $4.02M in Q4 2017.
160 funds tracked by Wall St. Rank held Prothena Corp as of Q2 2024.

Based on First Manhattan's 13F filing for Q2 2024, filed 14 Aug 2024.