Simplex Trading
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Simplex Trading’s Sionna Therapeutics SION Stock Holding History

Simplex Trading’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 		$143K Buy
+27,200
New +$625K ﹤0.01% 5016

Other funds holding SION

Atlas Venture Life Science Advisors
Atlas Venture Life Science Advisors Cambridge, Massachusetts $631M AUM 38.42% 1-Year Est. Return
BlackRock
BlackRock New York $6.79T AUM 37.06% 1-Year Est. Return
Aberdeen Group
Aberdeen Group Edinburgh, United Kingdom $72.4B AUM 31.32% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.76T AUM
Y-Intercept (HK)
Y-Intercept (HK) Hong Kong $4.52B AUM 6.6% 1-Year Est. Return
Acadian Asset Management
Acadian Asset Management Boston, Massachusetts $85.7B AUM 51.02% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.92T AUM 36.1% 1-Year Est. Return
Walleye Capital
Walleye Capital New York $109B AUM 29.28% 1-Year Est. Return
Marshall Wace
Marshall Wace London, United Kingdom $114B AUM 35.47% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.44T AUM 36.12% 1-Year Est. Return

Simplex Trading's SION Position: Q3 2026 in Review

Simplex Trading opened a new position in Sionna Therapeutics (SION) in Q3 2026: 13,194 shares worth $69.4K. The stake represents ﹤0.01% of the portfolio and ranks #5840 among its holdings.

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

  • Simplex Trading held 13,194 shares of Sionna Therapeutics worth $69.4K as of Q3 2026.
  • Sionna Therapeutics was a new Simplex Trading position in Q3 2026.
  • Sionna Therapeutics made up ﹤0.01% of Simplex Trading's portfolio in Q3 2026, its #5840 holding.
  • 87 funds tracked by Wall St. Rank held Sionna Therapeutics as of Q3 2026.

Based on Simplex Trading's 13F filing for Q3 2026, filed 4 Nov 2026.