CIBC Private Wealth Group
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CIBC Private Wealth Group’s Prothena Corp PRTA Stock Holding History

CIBC Private Wealth 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 		$458 Hold
48
– – ﹤0.01% 3060
2025
Q3 		$468 Sell
48
-1
-2% -$8 ﹤0.01% 2893
2025
Q2 		$297 Hold
49
– – ﹤0.01% 2881
2025
Q1 		$514 Hold
49
– – ﹤0.01% 2890
2024
Q4 		$694 Hold
49
– – ﹤0.01% 2829
2024
Q3 		$820 Hold
49
– – ﹤0.01% 2932
2024
Q2 		$989 Hold
49
– – ﹤0.01% 2904
2024
Q1 		$1.28K Buy
+49
New +$1.46K ﹤0.01% 2832
2018
Q3 		– Sell
-49
Closed -$1K – 1523
2018
Q2 		$1K Hold
49
– – ﹤0.01% 1906
2018
Q1 		$2K Sell
49
-88
-64% -$3.2K ﹤0.01% 1809
2017
Q4 		$5K Buy
+137
New +$6.97K ﹤0.01% 1690

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

CIBC Private Wealth Group's PRTA Position: Q4 2025 in Review

CIBC Private Wealth Group held its Prothena Corp (PRTA) position steady in Q4 2025 at 48 shares worth $458. The position accounts for ﹤0.01% of the portfolio, ranked #3060.

CIBC Private Wealth Group first reported a position in PRTA in Q4 2017 and has held it in 11 quarters since. The position peaked at $5K in Q4 2017. 181 funds tracked by Wall St. Rank hold PRTA as of Q4 2025.

  • CIBC Private Wealth Group held 48 shares of Prothena Corp worth $458 as of Q4 2025.
  • CIBC Private Wealth Group left its Prothena Corp share count unchanged in Q4 2025.
  • Prothena Corp made up ﹤0.01% of CIBC Private Wealth Group's portfolio in Q4 2025, its #3060 holding.
  • CIBC Private Wealth Group first reported a position in Prothena Corp in Q4 2017 and has held it in 11 quarters since.
  • CIBC Private Wealth Group's Prothena Corp position peaked at $5K in Q4 2017.
  • 181 funds tracked by Wall St. Rank held Prothena Corp as of Q4 2025.

Based on CIBC Private Wealth Group's 13F filing for Q4 2025, filed 12 Feb 2026.