Jones Financial Companies
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Jones Financial Companies’s Prothena Corp PRTA Stock Holding History

Jones Financial Companies’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 		$195K Buy
19,430
+21
+0.1% +$207 ﹤0.01% 2590
2026
Q1 		$180K Buy
19,409
+3,509
+22% +$32.2K ﹤0.01% 2441
2025
Q4 		$152K Buy
15,900
+1,900
+14% +$19.3K ﹤0.01% 2038
2025
Q3 		$132K Hold
14,000
– – ﹤0.01% 1963
2025
Q2 		$85.1K Buy
+14,000
New +$105K ﹤0.01% 1996

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

Jones Financial Companies's PRTA Position: Q2 2026 in Review

Jones Financial Companies increased its Prothena Corp (PRTA) stake by 0.11% in Q2 2026, buying an estimated $207 and bringing the position to 19,430 shares worth $195K. The position accounts for ﹤0.01% of the portfolio, ranked #2590.

Jones Financial Companies first reported a position in PRTA in Q2 2025 and has held it in 5 quarters since. 188 funds tracked by Wall St. Rank hold PRTA as of Q2 2026.

  • Jones Financial Companies held 19,430 shares of Prothena Corp worth $195K as of Q2 2026.
  • Jones Financial Companies bought 21 Prothena Corp shares in Q2 2026, an estimated $207.
  • Prothena Corp made up ﹤0.01% of Jones Financial Companies's portfolio in Q2 2026, its #2590 holding.
  • Jones Financial Companies first reported a position in Prothena Corp in Q2 2025 and has held it in 5 quarters since.
  • 188 funds tracked by Wall St. Rank held Prothena Corp as of Q2 2026.

Based on Jones Financial Companies's 13F filing for Q2 2026, filed 14 Aug 2026.