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GF Fund Management’s Prothena Corp PRTA Stock Holding History

GF Fund 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 		$11.2K Sell
1,141
-58
-5% -$573 ﹤0.01% 526
2026
Q1 		$11.7K Buy
1,199
+142
+13% +$1.3K ﹤0.01% 547
2025
Q4 		$10.1K Sell
1,057
-98
-8% -$998 ﹤0.01% 573
2025
Q3 		$11.3K Sell
1,155
-222
-16% -$1.71K ﹤0.01% 547
2025
Q2 		$8.36K Hold
1,377
– – ﹤0.01% 587
2025
Q1 		$17K Buy
1,377
+247
+22% +$3.49K ﹤0.01% 516
2024
Q4 		$15.7K Buy
+1,130
New +$17.8K ﹤0.01% 493

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

GF Fund Management's PRTA Position: Q2 2026 in Review

GF Fund Management reduced its Prothena Corp (PRTA) stake by 4.8% in Q2 2026, selling an estimated $573 and leaving 1,141 shares worth $11.2K. The position accounts for ﹤0.01% of the portfolio, ranked #526.

GF Fund Management first reported a position in PRTA in Q4 2024 and has held it in 7 quarters since. The position peaked at $17K in Q1 2025. 188 funds tracked by Wall St. Rank hold PRTA as of Q2 2026.

  • GF Fund Management held 1,141 shares of Prothena Corp worth $11.2K as of Q2 2026.
  • GF Fund Management sold 58 Prothena Corp shares in Q2 2026, an estimated $573.
  • Prothena Corp made up ﹤0.01% of GF Fund Management's portfolio in Q2 2026, its #526 holding.
  • GF Fund Management first reported a position in Prothena Corp in Q4 2024 and has held it in 7 quarters since.
  • GF Fund Management's Prothena Corp position peaked at $17K in Q1 2025.
  • 188 funds tracked by Wall St. Rank held Prothena Corp as of Q2 2026.

Based on GF Fund Management's 13F filing for Q2 2026, filed 7 Aug 2026.