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Ikarian Capital’s Prothena Corp PRTA Stock Holding History

Ikarian 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
2025
Q3 		– Sell
-100,000
Closed -$607K – 187
2025
Q2 		$607K Hold
100,000
– – 0.12% 88
2025
Q1 		$1.24M Buy
+100,000
New +$1.41M 0.15% 88
2024
Q4 		– Sell
-11,800
Closed -$197K – 196
2024
Q3 		$197K Buy
+11,800
New +$254K 0.03% 136
2024
Q1 		– Sell
-600,000
Closed -$21.8M – 171
2023
Q4 		$21.8M Buy
+600,000
New +$23.1M 2.04% 12
2022
Q4 		– Sell
-66,800
Closed -$4.05M – 101
2022
Q3 		$4.05M Buy
+66,800
New +$2.11M 0.81% 42

Other funds holding PRTA

Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
AC
Armistice Capital New York $5.62B AUM 36.06% 1-Year Est. Return
RCMNY
Rubric Capital Management (New York) New York $9.44B AUM 68.42% 1-Year Est. Return
ACM
ADAR1 Capital Management Austin, Texas $1.7B AUM 340.85% 1-Year Est. Return
PAI
Palo Alto Investors Palo Alto, California $654M AUM 77.8% 1-Year Est. Return
D.E. Shaw & Co
D.E. Shaw & Co New York $166B AUM 43.98% 1-Year Est. Return
Acadian Asset Management
Acadian Asset Management Boston, Massachusetts $70.5B AUM 36% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

Ikarian Capital's PRTA Position: Q2 2021 in Review

Ikarian Capital sold out of Prothena Corp (PRTA) in Q2 2021, closing a stake of 437,430 shares — an estimated $11M sold.

Ikarian Capital first reported a position in PRTA in Q4 2019 and held it in 3 quarters. The position peaked at $14.3M in Q4 2020. 156 funds tracked by Wall St. Rank hold PRTA as of Q2 2021.

  • Ikarian Capital reported no remaining Prothena Corp position as of Q2 2021 after selling out during the quarter.
  • Ikarian Capital sold 437,430 Prothena Corp shares in Q2 2021, an estimated $11M.
  • Ikarian Capital first reported a position in Prothena Corp in Q4 2019 and held it in 3 quarters.
  • Ikarian Capital's Prothena Corp position peaked at $14.3M in Q4 2020.
  • 156 funds tracked by Wall St. Rank held Prothena Corp as of Q2 2021.

Based on Ikarian Capital's 13F filing for Q2 2021, filed 16 Aug 2021.