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Entropy Technologies’s Prothena Corp PRTA Stock Holding History

Entropy Technologies’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
Q1 		– Sell
-16,900
Closed -$161K – 1110
2025
Q4 		$161K Buy
+16,900
New +$172K 0.01% 824
2024
Q1 		– Sell
-9,031
Closed -$328K – 846
2023
Q4 		$328K Buy
+9,031
New +$348K 0.06% 428

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
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
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
Morgan Stanley
Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return
PAI
Palo Alto Investors Palo Alto, California $724M AUM 96.91% 1-Year Est. Return

Entropy Technologies's PRTA Position: Q1 2026 in Review

Entropy Technologies sold out of Prothena Corp (PRTA) in Q1 2026, closing a stake of 16,900 shares — an estimated $161K sold.

Entropy Technologies first reported a position in PRTA in Q4 2023 and held it in 2 quarters. The position peaked at $328K in Q4 2023. 185 funds tracked by Wall St. Rank hold PRTA as of Q1 2026.

  • Entropy Technologies reported no remaining Prothena Corp position as of Q1 2026 after selling out during the quarter.
  • Entropy Technologies sold 16,900 Prothena Corp shares in Q1 2026, an estimated $161K.
  • Entropy Technologies first reported a position in Prothena Corp in Q4 2023 and held it in 2 quarters.
  • Entropy Technologies's Prothena Corp position peaked at $328K in Q4 2023.
  • 185 funds tracked by Wall St. Rank held Prothena Corp as of Q1 2026.

Based on Entropy Technologies's 13F filing for Q1 2026, filed 14 May 2026.