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New Millennium Group’s Prothena Corp PRTA Stock Holding History

New Millennium Group’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
Q4 		$10 Buy
+1
New +$10 ﹤0.01% 398

Other funds holding PRTA

Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
RCMNY
Rubric Capital Management (New York) New York $10.9B AUM 70.31% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
D.E. Shaw & Co
D.E. Shaw & Co New York $210B AUM 57.28% 1-Year Est. Return
AC
Armistice Capital New York $8.17B AUM 68.82% 1-Year Est. Return
ACM
ADAR1 Capital Management Austin, Texas $2.19B AUM 374.99% 1-Year Est. Return
Acadian Asset Management
Acadian Asset Management Boston, Massachusetts $84.2B AUM 55.88% 1-Year Est. Return
PAI
Palo Alto Investors Palo Alto, California $724M AUM 96.91% 1-Year Est. Return

New Millennium Group's PRTA Position: Q4 2025 in Review

New Millennium Group opened a new position in Prothena Corp (PRTA) in Q4 2025: 1 share worth $10. The stake represents ﹤0.01% of the portfolio and ranks #398 among its holdings.

181 funds tracked by Wall St. Rank hold PRTA as of Q4 2025.

  • New Millennium Group held 1 share of Prothena Corp worth $10 as of Q4 2025.
  • Prothena Corp was a new New Millennium Group position in Q4 2025.
  • Prothena Corp made up ﹤0.01% of New Millennium Group's portfolio in Q4 2025, its #398 holding.
  • 181 funds tracked by Wall St. Rank held Prothena Corp as of Q4 2025.

Based on New Millennium Group's 13F filing for Q4 2025, filed 6 Feb 2026.