Advisory Research’s Prothena Corp PRTA Stock Holding History

Advisory Research’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 Q3	–	Sell	-22,039	Closed	-$1.5M	–	470
2023 Q2	$1.5M	Buy	22,039 +14,888	+208%	+$960K	0.19%	150
2023 Q1	$347K	Buy	7,151 +31	+0.4%	+$1.64K	0.06%	278
2022 Q4	$429K	Buy	+7,120	New	+$417K	0.04%	266
2022 Q1	–	Sell	-10,975	Closed	-$542K	–	431
2021 Q4	$542K	Sell	10,975 -8,709	-44%	-$483K	0.04%	249
2021 Q3	$1.4M	Buy	+19,684	New	+$1.22M	0.09%	163

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

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

Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return

Advisory Research's PRTA Position: Q3 2023 in Review

Advisory Research sold out of Prothena Corp (PRTA) in Q3 2023, closing a stake of 22,039 shares — an estimated $1.5M sold.

Advisory Research first reported a position in PRTA in Q3 2021 and held it in 5 quarters. The position peaked at $1.5M in Q2 2023. 186 funds tracked by Wall St. Rank hold PRTA as of Q3 2023.

Advisory Research reported no remaining Prothena Corp position as of Q3 2023 after selling out during the quarter.
Advisory Research sold 22,039 Prothena Corp shares in Q3 2023, an estimated $1.5M.
Advisory Research first reported a position in Prothena Corp in Q3 2021 and held it in 5 quarters.
Advisory Research's Prothena Corp position peaked at $1.5M in Q2 2023.
186 funds tracked by Wall St. Rank held Prothena Corp as of Q3 2023.

Based on Advisory Research's 13F filing for Q3 2023, filed 13 Nov 2023.