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Caitong International Asset Management’s Prothena Corp PRTA Stock Holding History

Caitong International Asset Management’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 		$1.13K Buy
115
+95
+475% +$938 ﹤0.01% 1520
2026
Q1 		$194 Sell
20
-3
-13% -$27 ﹤0.01% 1885
2025
Q4 		$220 Buy
+23
New +$234 ﹤0.01% 1601
2025
Q2 		– Sell
-238
Closed -$2.94K – 2382
2025
Q1 		$2.94K Buy
238
+123
+107% +$1.74K ﹤0.01% 1201
2024
Q4 		$1.59K Buy
+115
New +$1.81K ﹤0.01% 1216

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

Caitong International Asset Management's PRTA Position: Q2 2026 in Review

Caitong International Asset Management increased its Prothena Corp (PRTA) stake by 475% in Q2 2026, buying an estimated $938 and bringing the position to 115 shares worth $1.13K. The position accounts for ﹤0.01% of the portfolio, ranked #1520.

Caitong International Asset Management first reported a position in PRTA in Q4 2024 and has held it in 5 quarters since. The position peaked at $2.94K in Q1 2025. 188 funds tracked by Wall St. Rank hold PRTA as of Q2 2026.

  • Caitong International Asset Management held 115 shares of Prothena Corp worth $1.13K as of Q2 2026.
  • Caitong International Asset Management bought 95 Prothena Corp shares in Q2 2026, an estimated $938.
  • Prothena Corp made up ﹤0.01% of Caitong International Asset Management's portfolio in Q2 2026, its #1520 holding.
  • Caitong International Asset Management first reported a position in Prothena Corp in Q4 2024 and has held it in 5 quarters since.
  • Caitong International Asset Management's Prothena Corp position peaked at $2.94K in Q1 2025.
  • 188 funds tracked by Wall St. Rank held Prothena Corp as of Q2 2026.

Based on Caitong International Asset Management's 13F filing for Q2 2026, filed 5 Aug 2026.