HighVista Strategies’s Prothena Corp PRTA Stock Holding History

HighVista Strategies’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
2023 Q4	–	Sell	-9,195	Closed	-$444K	–	140
2023 Q3	$444K	Buy	9,195 +2,789	+44%	+$166K	0.21%	121
2023 Q2	$437K	Sell	6,406 -8,166	-56%	-$527K	0.2%	121
2023 Q1	$706K	Hold	14,572	–	–	0.58%	60
2022 Q4	$878K	Buy	+14,572	New	+$853K	0.52%	56
2022 Q2	–	Sell	-12,953	Closed	-$474K	–	113
2022 Q1	$474K	Sell	12,953 -15,125	-54%	-$545K	0.3%	74
2021 Q4	$1.39M	Buy	+28,078	New	+$1.56M	1.1%	26
2020 Q4	–	Sell	-44,414	Closed	-$444K	–	129
2020 Q3	$444K	Buy	+44,414	New	+$534K	0.32%	60

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

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

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

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

PAI

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

FLAM

First Light Asset Management Edina, Minnesota $1.12B AUM 114.45% 1-Year Est. Return

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

HighVista Strategies's PRTA Position: Q4 2023 in Review

HighVista Strategies sold out of Prothena Corp (PRTA) in Q4 2023, closing a stake of 9,195 shares — an estimated $444K sold.

HighVista Strategies first reported a position in PRTA in Q3 2020 and held it in 7 quarters. The position peaked at $1.39M in Q4 2021. 187 funds tracked by Wall St. Rank hold PRTA as of Q4 2023.

HighVista Strategies reported no remaining Prothena Corp position as of Q4 2023 after selling out during the quarter.
HighVista Strategies sold 9,195 Prothena Corp shares in Q4 2023, an estimated $444K.
HighVista Strategies first reported a position in Prothena Corp in Q3 2020 and held it in 7 quarters.
HighVista Strategies's Prothena Corp position peaked at $1.39M in Q4 2021.
187 funds tracked by Wall St. Rank held Prothena Corp as of Q4 2023.

Based on HighVista Strategies's 13F filing for Q4 2023, filed 14 Feb 2024.