Vanguard Global Advisers
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Vanguard Global Advisers’s Prothena Corp PRTA Stock Holding History

Vanguard Global Advisers’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 		$179K Hold
18,249
– – ﹤0.01% 2548
2026
Q1 		$177K Buy
+18,249
New +$167K ﹤0.01% 2490

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 96.49% 1-Year Est. Return

Vanguard Global Advisers's PRTA Position: Q2 2026 in Review

Vanguard Global Advisers held its Prothena Corp (PRTA) position steady in Q2 2026 at 18,249 shares worth $179K. The position accounts for ﹤0.01% of the portfolio, ranked #2548.

Vanguard Global Advisers first reported a position in PRTA in Q1 2026 and has held it in 2 quarters since. 186 funds tracked by Wall St. Rank hold PRTA as of Q2 2026.

  • Vanguard Global Advisers held 18,249 shares of Prothena Corp worth $179K as of Q2 2026.
  • Vanguard Global Advisers left its Prothena Corp share count unchanged in Q2 2026.
  • Prothena Corp made up ﹤0.01% of Vanguard Global Advisers's portfolio in Q2 2026, its #2548 holding.
  • Vanguard Global Advisers first reported a position in Prothena Corp in Q1 2026 and has held it in 2 quarters since.
  • 186 funds tracked by Wall St. Rank held Prothena Corp as of Q2 2026.

Based on Vanguard Global Advisers's 13F filing for Q2 2026, filed 13 Aug 2026.