Boxer Capital’s Prothena Corp PRTA Stock Holding History

Boxer Capital’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 Q4	–	Sell	-690,000	Closed	-$11.5M	–	40
2024 Q3	$11.5M	Hold	690,000	–	–	0.57%	42
2024 Q2	$14.2M	Hold	690,000	–	–	0.75%	35
2024 Q1	$17.1M	Buy	690,000 +25,000	+4%	+$744K	0.84%	35
2023 Q4	$24.2M	Buy	665,000 +40,000	+6%	+$1.54M	1.2%	25
2023 Q3	$30.2M	Buy	625,000 +325,000	+108%	+$19.3M	1.61%	20
2023 Q2	$20.5M	Hold	300,000	–	–	0.95%	37
2023 Q1	$14.5M	Hold	300,000	–	–	0.71%	40
2022 Q4	$18.1M	Hold	300,000	–	–	0.95%	34
2022 Q3	$18.2M	Hold	300,000	–	–	1.02%	37
2022 Q2	$8.14M	Hold	300,000	–	–	0.52%	43
2022 Q1	$11M	Hold	300,000	–	–	0.56%	43
2021 Q4	$14.8M	Hold	300,000	–	–	0.58%	38
2021 Q3	$21.4M	Buy	+300,000	New	+$18.6M	0.75%	39
2019 Q4	–	Sell	-79,598	Closed	-$624K	–	55
2019 Q3	$624K	Buy	+79,598	New	+$707K	0.05%	48

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

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

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

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

Armistice Capital New York $5.62B AUM 36.06% 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

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

Siren LLC Greenwich, Connecticut $3.61B AUM 203.3% 1-Year Est. Return

Boxer Capital's PRTA Position: Q4 2024 in Review

Boxer Capital sold out of Prothena Corp (PRTA) in Q4 2024, closing a stake of 690,000 shares — an estimated $11.5M sold.

Boxer Capital first reported a position in PRTA in Q3 2019 and held it in 14 quarters. The position peaked at $30.2M in Q3 2023. 170 funds tracked by Wall St. Rank hold PRTA as of Q4 2024.

Boxer Capital reported no remaining Prothena Corp position as of Q4 2024 after selling out during the quarter.
Boxer Capital sold 690,000 Prothena Corp shares in Q4 2024, an estimated $11.5M.
Boxer Capital first reported a position in Prothena Corp in Q3 2019 and held it in 14 quarters.
Boxer Capital's Prothena Corp position peaked at $30.2M in Q3 2023.
170 funds tracked by Wall St. Rank held Prothena Corp as of Q4 2024.

Based on Boxer Capital's 13F filing for Q4 2024.