Jane Street’s Sionna Therapeutics SION Stock Holding History

Jane Street’s Portfolio SION Stock Details SION Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q3	$554K	Buy	+105,394	New	+$2.42M	﹤0.01%	7773

Other funds holding SION

Atlas Venture Life Science Advisors Cambridge, Massachusetts $631M AUM 38.42% 1-Year Est. Return

Aberdeen Group Edinburgh, United Kingdom $72.4B AUM 31.32% 1-Year Est. Return

Y-Intercept (HK) Hong Kong $4.52B AUM 6.6% 1-Year Est. Return

Acadian Asset Management Boston, Massachusetts $85.7B AUM 51.02% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.92T AUM 36.1% 1-Year Est. Return

State Street Boston, Massachusetts $3.44T AUM 36.12% 1-Year Est. Return

BNP Paribas Financial Markets Paris, France $294B AUM 47.59% 1-Year Est. Return

Citigroup New York $308B AUM 40.94% 1-Year Est. Return

Caitong International Asset Management Hong Kong $1.04B AUM 150.26% 1-Year Est. Return

Rhenman & Partners Asset Management Stockholm, Sweden $903M AUM 49.67% 1-Year Est. Return

Jane Street's SION Position: Q3 2026 in Review

Jane Street opened a new position in Sionna Therapeutics (SION) in Q3 2026: 105,394 shares worth $554K. The stake represents ﹤0.01% of the portfolio and ranks #7773 among its holdings.

70 funds tracked by Wall St. Rank hold SION as of Q3 2026.

Jane Street held 105,394 shares of Sionna Therapeutics worth $554K as of Q3 2026.
Sionna Therapeutics was a new Jane Street position in Q3 2026.
Sionna Therapeutics made up ﹤0.01% of Jane Street's portfolio in Q3 2026, its #7773 holding.
70 funds tracked by Wall St. Rank held Sionna Therapeutics as of Q3 2026.

Based on Jane Street's 13F filing for Q3 2026, filed 12 Nov 2026.