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Rothschild Investment LLC’s Prothena Corp PRTA Stock Holding History

Rothschild Investment LLC’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 		$98 Buy
+10
New +$99 ﹤0.01% 3518
2025
Q2 		– Sell
-45
Closed -$557 – 3150
2025
Q1 		$557 Buy
45
+10
+29% +$141 ﹤0.01% 2587
2024
Q4 		$485 Sell
35
-5
-13% -$79 ﹤0.01% 2542
2024
Q3 		$669 Buy
40
+30
+300% +$645 ﹤0.01% 2387
2024
Q2 		$206 Buy
10
+5
+100% +$108 ﹤0.01% 2479
2024
Q1 		$124 Buy
+5
New +$149 ﹤0.01% 2071

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 $3.38T AUM 44.17% 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

Rothschild Investment LLC's PRTA Position: Q2 2026 in Review

Rothschild Investment LLC opened a new position in Prothena Corp (PRTA) in Q2 2026: 10 shares worth $98. The stake represents ﹤0.01% of the portfolio and ranks #3518 among its holdings. This is a return to the name: Rothschild Investment LLC previously reported a position in PRTA as recently as Q1 2025.

Rothschild Investment LLC first reported a position in PRTA in Q1 2024 and has held it in 6 quarters since. The position peaked at $669 in Q3 2024. 187 funds tracked by Wall St. Rank hold PRTA as of Q2 2026.

  • Rothschild Investment LLC held 10 shares of Prothena Corp worth $98 as of Q2 2026.
  • Prothena Corp was a new Rothschild Investment LLC position in Q2 2026.
  • Prothena Corp made up ﹤0.01% of Rothschild Investment LLC's portfolio in Q2 2026, its #3518 holding.
  • Rothschild Investment LLC first reported a position in Prothena Corp in Q1 2024 and has held it in 6 quarters since.
  • Rothschild Investment LLC's Prothena Corp position peaked at $669 in Q3 2024.
  • 187 funds tracked by Wall St. Rank held Prothena Corp as of Q2 2026.

Based on Rothschild Investment LLC's 13F filing for Q2 2026, filed 6 Aug 2026.