Mercer Global Advisors
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Mercer Global Advisors’s Prothena Corp PRTA Stock Holding History

Mercer Global 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 		$112K Sell
11,454
-1,640
-13% -$16.2K ﹤0.01% 3397
2026
Q1 		$127K Buy
+13,094
New +$120K ﹤0.01% 2962

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

Mercer Global Advisors's PRTA Position: Q2 2026 in Review

Mercer Global Advisors reduced its Prothena Corp (PRTA) stake by 13% in Q2 2026, selling an estimated $16.2K and leaving 11,454 shares worth $112K. The position accounts for ﹤0.01% of the portfolio, ranked #3397.

Mercer Global Advisors first reported a position in PRTA in Q1 2026 and has held it in 2 quarters since. The position peaked at $127K in Q1 2026. 188 funds tracked by Wall St. Rank hold PRTA as of Q2 2026.

  • Mercer Global Advisors held 11,454 shares of Prothena Corp worth $112K as of Q2 2026.
  • Mercer Global Advisors sold 1,640 Prothena Corp shares in Q2 2026, an estimated $16.2K.
  • Prothena Corp made up ﹤0.01% of Mercer Global Advisors's portfolio in Q2 2026, its #3397 holding.
  • Mercer Global Advisors first reported a position in Prothena Corp in Q1 2026 and has held it in 2 quarters since.
  • Mercer Global Advisors's Prothena Corp position peaked at $127K in Q1 2026.
  • 188 funds tracked by Wall St. Rank held Prothena Corp as of Q2 2026.

Based on Mercer Global Advisors's 13F filing for Q2 2026, filed 11 Aug 2026.