SS
PRTA icon

SBI Securities’s Prothena Corp PRTA Stock Holding History

SBI Securities’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 		$147 Hold
15
– – ﹤0.01% 3412
2026
Q1 		$146 Hold
15
– – ﹤0.01% 3315
2025
Q4 		$143 Sell
15
-14
-48% -$143 ﹤0.01% 3308
2025
Q3 		$283 Sell
29
-933
-97% -$7.17K ﹤0.01% 3207
2025
Q2 		$5.84K Hold
962
– – ﹤0.01% 1914
2025
Q1 		$11.9K Sell
962
-10
-1% -$141 ﹤0.01% 1540
2024
Q4 		$13.5K Buy
+972
New +$15.3K ﹤0.01% 1516

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

SBI Securities's PRTA Position: Q2 2026 in Review

SBI Securities held its Prothena Corp (PRTA) position steady in Q2 2026 at 15 shares worth $147. The position accounts for ﹤0.01% of the portfolio, ranked #3412.

SBI Securities first reported a position in PRTA in Q4 2024 and has held it in 7 quarters since. The position peaked at $13.5K in Q4 2024. 188 funds tracked by Wall St. Rank hold PRTA as of Q2 2026.

  • SBI Securities held 15 shares of Prothena Corp worth $147 as of Q2 2026.
  • SBI Securities left its Prothena Corp share count unchanged in Q2 2026.
  • Prothena Corp made up ﹤0.01% of SBI Securities's portfolio in Q2 2026, its #3412 holding.
  • SBI Securities first reported a position in Prothena Corp in Q4 2024 and has held it in 7 quarters since.
  • SBI Securities's Prothena Corp position peaked at $13.5K in Q4 2024.
  • 188 funds tracked by Wall St. Rank held Prothena Corp as of Q2 2026.

Based on SBI Securities's 13F filing for Q2 2026, filed 23 Jul 2026.