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Purkiss Capital Advisors’s Prothena Corp PRTA Stock Holding History

Purkiss Capital 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
2026
Q2 		$246K Hold
25,086
– – 0.09% 164
2026
Q1 		$244K Hold
25,086
– – 0.11% 142
2025
Q4 		$240K Sell
25,086
-300
-1% -$3.05K 0.11% 150
2025
Q3 		$248K Buy
25,386
+482
+2% +$3.71K 0.12% 140
2025
Q2 		$151K Buy
24,904
+3,275
+15% +$24.6K 0.08% 149
2025
Q1 		$268K Buy
21,629
+10,900
+102% +$154K 0.2% 86
2024
Q4 		$149K Buy
+10,729
New +$169K 0.13% 98

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 $3.37T AUM 44.26% 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

Purkiss Capital Advisors's PRTA Position: Q2 2026 in Review

Purkiss Capital Advisors held its Prothena Corp (PRTA) position steady in Q2 2026 at 25,086 shares worth $246K. The position accounts for 0.09% of the portfolio, ranked #164.

Purkiss Capital Advisors first reported a position in PRTA in Q4 2024 and has held it in 7 quarters since. The position peaked at $268K in Q1 2025. 188 funds tracked by Wall St. Rank hold PRTA as of Q2 2026.

  • Purkiss Capital Advisors held 25,086 shares of Prothena Corp worth $246K as of Q2 2026.
  • Purkiss Capital Advisors left its Prothena Corp share count unchanged in Q2 2026.
  • Prothena Corp made up 0.09% of Purkiss Capital Advisors's portfolio in Q2 2026, its #164 holding.
  • Purkiss Capital Advisors first reported a position in Prothena Corp in Q4 2024 and has held it in 7 quarters since.
  • Purkiss Capital Advisors's Prothena Corp position peaked at $268K in Q1 2025.
  • 188 funds tracked by Wall St. Rank held Prothena Corp as of Q2 2026.

Based on Purkiss Capital Advisors's 13F filing for Q2 2026, filed 30 Jul 2026.