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Monimus Capital Management’s Prothena Corp PRTA Stock Holding History

Monimus 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 		$3.22M Sell
329,052
-156,565
-32% -$1.55M 0.75% 44
2026
Q1 		$4.72M Buy
485,617
+231,495
+91% +$2.12M 1.31% 33
2025
Q4 		$2.43M Sell
254,122
-3,934
-2% -$40K 1.6% 25
2025
Q3 		$2.52M Buy
258,056
+51,581
+25% +$396K 1.55% 25
2025
Q2 		$1.25M Buy
+206,475
New +$1.55M 0.91% 36

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

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

Monimus Capital Management reduced its Prothena Corp (PRTA) stake by 32% in Q2 2026, selling an estimated $1.55M and leaving 329,052 shares worth $3.22M. The position accounts for 0.75% of the portfolio, ranked #44.

Monimus Capital Management first reported a position in PRTA in Q2 2025 and has held it in 5 quarters since. The position peaked at $4.72M in Q1 2026. 188 funds tracked by Wall St. Rank hold PRTA as of Q2 2026.

  • Monimus Capital Management held 329,052 shares of Prothena Corp worth $3.22M as of Q2 2026.
  • Monimus Capital Management sold 156,565 Prothena Corp shares in Q2 2026, an estimated $1.55M.
  • Prothena Corp made up 0.75% of Monimus Capital Management's portfolio in Q2 2026, its #44 holding.
  • Monimus Capital Management first reported a position in Prothena Corp in Q2 2025 and has held it in 5 quarters since.
  • Monimus Capital Management's Prothena Corp position peaked at $4.72M in Q1 2026.
  • 188 funds tracked by Wall St. Rank held Prothena Corp as of Q2 2026.

Based on Monimus Capital Management's 13F filing for Q2 2026, filed 14 Aug 2026.