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Essential Partners’s Prothena Corp PRTA Stock Holding History

Essential 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 		$2.46K Sell
251
-82
-25% -$810 ﹤0.01% 1891
2026
Q1 		$3.24K Hold
333
– – ﹤0.01% 1787
2025
Q4 		$3.18K Hold
333
– – ﹤0.01% 1618
2025
Q3 		$3.25K Buy
+333
New +$2.56K ﹤0.01% 1600

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

Essential Partners's PRTA Position: Q2 2026 in Review

Essential Partners reduced its Prothena Corp (PRTA) stake by 25% in Q2 2026, selling an estimated $810 and leaving 251 shares worth $2.46K. The position accounts for ﹤0.01% of the portfolio, ranked #1891.

Essential Partners first reported a position in PRTA in Q3 2025 and has held it in 4 quarters since. The position peaked at $3.25K in Q3 2025. 188 funds tracked by Wall St. Rank hold PRTA as of Q2 2026.

  • Essential Partners held 251 shares of Prothena Corp worth $2.46K as of Q2 2026.
  • Essential Partners sold 82 Prothena Corp shares in Q2 2026, an estimated $810.
  • Prothena Corp made up ﹤0.01% of Essential Partners's portfolio in Q2 2026, its #1891 holding.
  • Essential Partners first reported a position in Prothena Corp in Q3 2025 and has held it in 4 quarters since.
  • Essential Partners's Prothena Corp position peaked at $3.25K in Q3 2025.
  • 188 funds tracked by Wall St. Rank held Prothena Corp as of Q2 2026.

Based on Essential Partners's 13F filing for Q2 2026, filed 10 Aug 2026.