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Cornerstone Select Advisors’s Prothena Corp PRTA Stock Holding History

Cornerstone Select Advisors’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 		$97.9K Buy
+10,000
New +$98.7K 0.04% 147

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

Cornerstone Select Advisors's PRTA Position: Q2 2026 in Review

Cornerstone Select Advisors opened a new position in Prothena Corp (PRTA) in Q2 2026: 10,000 shares worth $97.9K. The stake represents 0.04% of the portfolio and ranks #147 among its holdings.

188 funds tracked by Wall St. Rank hold PRTA as of Q2 2026.

  • Cornerstone Select Advisors held 10,000 shares of Prothena Corp worth $97.9K as of Q2 2026.
  • Prothena Corp was a new Cornerstone Select Advisors position in Q2 2026.
  • Prothena Corp made up 0.04% of Cornerstone Select Advisors's portfolio in Q2 2026, its #147 holding.
  • 188 funds tracked by Wall St. Rank held Prothena Corp as of Q2 2026.

Based on Cornerstone Select Advisors's 13F filing for Q2 2026, filed 5 Aug 2026.