FWA
PRTA icon

Flagship Wealth Advisors’s Prothena Corp PRTA Stock Holding History

Flagship Wealth 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 		$14.7K Buy
+1,500
New +$14.8K ﹤0.01% 378
2026
Q1 		– Sell
-1,500
Closed -$14.3K – 394
2025
Q4 		$14.3K Hold
1,500
– – ﹤0.01% 301
2025
Q3 		$14.6K Hold
1,500
– – ﹤0.01% 304
2025
Q2 		$9.11K Buy
+1,500
New +$11.3K ﹤0.01% 305

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

Flagship Wealth Advisors's PRTA Position: Q2 2026 in Review

Flagship Wealth Advisors opened a new position in Prothena Corp (PRTA) in Q2 2026: 1,500 shares worth $14.7K. The stake represents ﹤0.01% of the portfolio and ranks #378 among its holdings. This is a return to the name: Flagship Wealth Advisors previously reported a position in PRTA as recently as Q4 2025.

Flagship Wealth Advisors first reported a position in PRTA in Q2 2025 and has held it in 4 quarters since. 188 funds tracked by Wall St. Rank hold PRTA as of Q2 2026.

  • Flagship Wealth Advisors held 1,500 shares of Prothena Corp worth $14.7K as of Q2 2026.
  • Prothena Corp was a new Flagship Wealth Advisors position in Q2 2026.
  • Prothena Corp made up ﹤0.01% of Flagship Wealth Advisors's portfolio in Q2 2026, its #378 holding.
  • Flagship Wealth Advisors first reported a position in Prothena Corp in Q2 2025 and has held it in 4 quarters since.
  • 188 funds tracked by Wall St. Rank held Prothena Corp as of Q2 2026.

Based on Flagship Wealth Advisors's 13F filing for Q2 2026, filed 27 Jul 2026.