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Koesten Hirschmann & Crabtree’s Prothena Corp PRTA Stock Holding History

Koesten Hirschmann & Crabtree’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
2025
Q3 		– Sell
-1
Closed -$9 – 348
2025
Q2 		$9 Buy
+1
New +$8 ﹤0.01% 343

Other funds holding PRTA

Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
AC
Armistice Capital New York $5.62B AUM 36.06% 1-Year Est. Return
RCMNY
Rubric Capital Management (New York) New York $9.44B AUM 68.42% 1-Year Est. Return
ACM
ADAR1 Capital Management Austin, Texas $1.7B AUM 340.85% 1-Year Est. Return
PAI
Palo Alto Investors Palo Alto, California $654M AUM 77.8% 1-Year Est. Return
D.E. Shaw & Co
D.E. Shaw & Co New York $166B AUM 43.98% 1-Year Est. Return
Acadian Asset Management
Acadian Asset Management Boston, Massachusetts $70.5B AUM 36% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

Koesten Hirschmann & Crabtree's PRTA Position: Q3 2025 in Review

Koesten Hirschmann & Crabtree sold out of Prothena Corp (PRTA) in Q3 2025, closing a stake of 1 share — an estimated $9 sold.

Koesten Hirschmann & Crabtree first reported a position in PRTA in Q2 2025 and held it in 1 quarter. The position peaked at $9 in Q2 2025. 187 funds tracked by Wall St. Rank hold PRTA as of Q3 2025.

  • Koesten Hirschmann & Crabtree reported no remaining Prothena Corp position as of Q3 2025 after selling out during the quarter.
  • Koesten Hirschmann & Crabtree sold 1 Prothena Corp share in Q3 2025, an estimated $9.
  • Koesten Hirschmann & Crabtree first reported a position in Prothena Corp in Q2 2025 and held it in 1 quarter.
  • Koesten Hirschmann & Crabtree's Prothena Corp position peaked at $9 in Q2 2025.
  • 187 funds tracked by Wall St. Rank held Prothena Corp as of Q3 2025.

Based on Koesten Hirschmann & Crabtree's 13F filing for Q3 2025, filed 5 Nov 2025.