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Arax Advisory Partners’s Prothena Corp PRTA Stock Holding History

Arax Advisory 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 		$53K Buy
5,412
+5,320
+5,783% +$52.5K ﹤0.01% 3218
2026
Q1 		$895 Buy
92
+79
+608% +$724 ﹤0.01% 3324
2025
Q4 		$124 Sell
13
-5,371
-100% -$54.7K ﹤0.01% 3796
2025
Q3 		$52.5K Buy
+5,384
New +$41.4K ﹤0.01% 1812

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

Arax Advisory Partners's PRTA Position: Q2 2026 in Review

Arax Advisory Partners increased its Prothena Corp (PRTA) stake by 5,783% in Q2 2026, buying an estimated $52.5K and bringing the position to 5,412 shares worth $53K. The position accounts for ﹤0.01% of the portfolio, ranked #3218.

Arax Advisory Partners first reported a position in PRTA in Q3 2025 and has held it in 4 quarters since. 188 funds tracked by Wall St. Rank hold PRTA as of Q2 2026.

  • Arax Advisory Partners held 5,412 shares of Prothena Corp worth $53K as of Q2 2026.
  • Arax Advisory Partners bought 5,320 Prothena Corp shares in Q2 2026, an estimated $52.5K.
  • Prothena Corp made up ﹤0.01% of Arax Advisory Partners's portfolio in Q2 2026, its #3218 holding.
  • Arax Advisory Partners first reported a position in Prothena Corp in Q3 2025 and has held it in 4 quarters since.
  • 188 funds tracked by Wall St. Rank held Prothena Corp as of Q2 2026.

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