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Monaco Asset Management’s Prothena Corp PRTA Stock Holding History

Monaco Asset 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
2025
Q4 		– Sell
-70,000
Closed -$683K – 98
2025
Q3 		$683K Hold
70,000
– – 0.04% 76
2025
Q2 		$425K Buy
+70,000
New +$525K 0.07% 85

Other funds holding PRTA

Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
RCMNY
Rubric Capital Management (New York) New York $10.9B AUM 70.31% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
D.E. Shaw & Co
D.E. Shaw & Co New York $210B AUM 57.28% 1-Year Est. Return
AC
Armistice Capital New York $8.17B AUM 68.82% 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
PAI
Palo Alto Investors Palo Alto, California $724M AUM 96.91% 1-Year Est. Return

Monaco Asset Management's PRTA Position: Q4 2025 in Review

Monaco Asset Management sold out of Prothena Corp (PRTA) in Q4 2025, closing a stake of 70,000 shares — an estimated $683K sold.

Monaco Asset Management first reported a position in PRTA in Q2 2025 and held it in 2 quarters. The position peaked at $683K in Q3 2025. 181 funds tracked by Wall St. Rank hold PRTA as of Q4 2025.

  • Monaco Asset Management reported no remaining Prothena Corp position as of Q4 2025 after selling out during the quarter.
  • Monaco Asset Management sold 70,000 Prothena Corp shares in Q4 2025, an estimated $683K.
  • Monaco Asset Management first reported a position in Prothena Corp in Q2 2025 and held it in 2 quarters.
  • Monaco Asset Management's Prothena Corp position peaked at $683K in Q3 2025.
  • 181 funds tracked by Wall St. Rank held Prothena Corp as of Q4 2025.

Based on Monaco Asset Management's 13F filing for Q4 2025, filed 10 Feb 2026.