SIC
PRTA icon

SJS Investment Consulting’s Prothena Corp PRTA Stock Holding History

SJS Investment Consulting’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 		$30 Buy
+3
New +$30 ﹤0.01% 2804
2023
Q1 		– Sell
-43
Closed -$2.59K – 1618
2022
Q4 		$2.59K Buy
43
+38
+760% +$2.23K ﹤0.01% 526
2022
Q3 		$0 Buy
+5
New +$158 ﹤0.01% 1443

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

SJS Investment Consulting's PRTA Position: Q2 2026 in Review

SJS Investment Consulting opened a new position in Prothena Corp (PRTA) in Q2 2026: 3 shares worth $30. The stake represents ﹤0.01% of the portfolio and ranks #2804 among its holdings. This is a return to the name: SJS Investment Consulting previously reported a position in PRTA as recently as Q4 2022.

SJS Investment Consulting first reported a position in PRTA in Q3 2022 and has held it in 3 quarters since. The position peaked at $2.59K in Q4 2022. 187 funds tracked by Wall St. Rank hold PRTA as of Q2 2026.

  • SJS Investment Consulting held 3 shares of Prothena Corp worth $30 as of Q2 2026.
  • Prothena Corp was a new SJS Investment Consulting position in Q2 2026.
  • Prothena Corp made up ﹤0.01% of SJS Investment Consulting's portfolio in Q2 2026, its #2804 holding.
  • SJS Investment Consulting first reported a position in Prothena Corp in Q3 2022 and has held it in 3 quarters since.
  • SJS Investment Consulting's Prothena Corp position peaked at $2.59K in Q4 2022.
  • 187 funds tracked by Wall St. Rank held Prothena Corp as of Q2 2026.

Based on SJS Investment Consulting's 13F filing for Q2 2026, filed 22 Jul 2026.