QOP
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Quinn Opportunity Partners’s Prothena Corp PRTA Stock Holding History

Quinn Opportunity Partners’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 		$490K Hold
50,000
– – 0.02% 275
2026
Q1 		$486K Hold
50,000
– – 0.03% 271
2025
Q4 		$478K Hold
50,000
– – 0.02% 285
2025
Q3 		$488K Hold
50,000
– – 0.03% 238
2025
Q2 		$304K Buy
+50,000
New +$375K 0.03% 277

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

Quinn Opportunity Partners's PRTA Position: Q2 2026 in Review

Quinn Opportunity Partners held its Prothena Corp (PRTA) position steady in Q2 2026 at 50,000 shares worth $490K. The position accounts for 0.02% of the portfolio, ranked #275.

Quinn Opportunity Partners first reported a position in PRTA in Q2 2025 and has held it in 5 quarters since. 187 funds tracked by Wall St. Rank hold PRTA as of Q2 2026.

  • Quinn Opportunity Partners held 50,000 shares of Prothena Corp worth $490K as of Q2 2026.
  • Quinn Opportunity Partners left its Prothena Corp share count unchanged in Q2 2026.
  • Prothena Corp made up 0.02% of Quinn Opportunity Partners's portfolio in Q2 2026, its #275 holding.
  • Quinn Opportunity Partners first reported a position in Prothena Corp in Q2 2025 and has held it in 5 quarters since.
  • 187 funds tracked by Wall St. Rank held Prothena Corp as of Q2 2026.

Based on Quinn Opportunity Partners's 13F filing for Q2 2026, filed 14 Aug 2026.