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Aster Capital Management’s Prothena Corp PRTA Stock Holding History

Aster Capital Management’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
2026
Q2 		– Sell
-256
Closed -$3.17K – 1175
2026
Q1 		$3.17K Buy
+256
New +$2.35K ﹤0.01% 723
2025
Q2 		– Sell
-227
Closed -$3.59K – 1461
2025
Q1 		$3.59K Sell
227
-61
-21% -$863 ﹤0.01% 1141
2024
Q4 		$3.99K Sell
288
-67
-19% -$1.06K ﹤0.01% 891
2024
Q3 		$5.94K Buy
+355
New +$7.63K ﹤0.01% 878

Other funds holding PRTA

Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
RCMNY
Rubric Capital Management (New York) New York $10.9B AUM 70.31% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Acadian Asset Management
Acadian Asset Management Boston, Massachusetts $84.2B AUM 55.88% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
D.E. Shaw & Co
D.E. Shaw & Co New York $210B AUM 57.28% 1-Year Est. Return
ACM
ADAR1 Capital Management Austin, Texas $2.19B AUM 374.99% 1-Year Est. Return
Two Sigma Investments
Two Sigma Investments New York $138B AUM 41.87% 1-Year Est. Return
PAI
Palo Alto Investors Palo Alto, California $724M AUM 96.91% 1-Year Est. Return

Aster Capital Management's PRTA Position: Q2 2026 in Review

Aster Capital Management sold out of Prothena Corp (PRTA) in Q2 2026, closing a stake of 256 shares — an estimated $3.17K sold.

Aster Capital Management first reported a position in PRTA in Q3 2024 and held it in 4 quarters. The position peaked at $5.94K in Q3 2024. 188 funds tracked by Wall St. Rank hold PRTA as of Q2 2026.

  • Aster Capital Management reported no remaining Prothena Corp position as of Q2 2026 after selling out during the quarter.
  • Aster Capital Management sold 256 Prothena Corp shares in Q2 2026, an estimated $3.17K.
  • Aster Capital Management first reported a position in Prothena Corp in Q3 2024 and held it in 4 quarters.
  • Aster Capital Management's Prothena Corp position peaked at $5.94K in Q3 2024.
  • 188 funds tracked by Wall St. Rank held Prothena Corp as of Q2 2026.

Based on Aster Capital Management's 13F filing for Q2 2026, filed 13 Aug 2026.