JBF Capital’s Prothena Corp PRTA Stock Holding History

JBF Capital’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	$101K	Hold	10,285	–	–	0.01%	90
2026 Q1	$100K	Buy	+10,285	New	+$94.3K	0.01%	102

Other funds holding PRTA

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 New York $6.73T AUM 46.02% 1-Year Est. Return

State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

Acadian Asset Management Boston, Massachusetts $84.2B AUM 55.88% 1-Year Est. Return

Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

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 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

JBF Capital's PRTA Position: Q2 2026 in Review

JBF Capital held its Prothena Corp (PRTA) position steady in Q2 2026 at 10,285 shares worth $101K. The position accounts for 0.01% of the portfolio, ranked #90.

JBF Capital first reported a position in PRTA in Q1 2026 and has held it in 2 quarters since. 188 funds tracked by Wall St. Rank hold PRTA as of Q2 2026.

JBF Capital held 10,285 shares of Prothena Corp worth $101K as of Q2 2026.
JBF Capital left its Prothena Corp share count unchanged in Q2 2026.
Prothena Corp made up 0.01% of JBF Capital's portfolio in Q2 2026, its #90 holding.
JBF Capital first reported a position in Prothena Corp in Q1 2026 and has held it in 2 quarters since.
188 funds tracked by Wall St. Rank held Prothena Corp as of Q2 2026.

Based on JBF Capital's 13F filing for Q2 2026, filed 13 Aug 2026.