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Coastal Bridge Advisors’s Prothena Corp PRTA Stock Holding History

Coastal Bridge Advisors’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
-11,433
Closed -$69.4K – 480
2025
Q2 		$69.4K Buy
+11,433
New +$85.8K 0.01% 439

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

Coastal Bridge Advisors's PRTA Position: Q3 2025 in Review

Coastal Bridge Advisors sold out of Prothena Corp (PRTA) in Q3 2025, closing a stake of 11,433 shares — an estimated $69.4K sold.

Coastal Bridge Advisors first reported a position in PRTA in Q2 2025 and held it in 1 quarter. The position peaked at $69.4K in Q2 2025. 187 funds tracked by Wall St. Rank hold PRTA as of Q3 2025.

  • Coastal Bridge Advisors reported no remaining Prothena Corp position as of Q3 2025 after selling out during the quarter.
  • Coastal Bridge Advisors sold 11,433 Prothena Corp shares in Q3 2025, an estimated $69.4K.
  • Coastal Bridge Advisors first reported a position in Prothena Corp in Q2 2025 and held it in 1 quarter.
  • Coastal Bridge Advisors's Prothena Corp position peaked at $69.4K in Q2 2025.
  • 187 funds tracked by Wall St. Rank held Prothena Corp as of Q3 2025.

Based on Coastal Bridge Advisors's 13F filing for Q3 2025, filed 3 Nov 2025.