Walleye Capital
SION icon

Walleye Capital’s Sionna Therapeutics SION Stock Holding History

Walleye Capital’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 		$2.38M Buy
453,319
+355,972
+366% +$8.17M ﹤0.01% 2656
2026
Q2 		$4.28M Buy
97,347
+82,250
+545% +$3.29M 0.02% 922
2026
Q1 		$605K Buy
+15,097
New +$576K ﹤0.01% 2508

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
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
Morgan Stanley
Morgan Stanley New York $1.96T AUM 27.49% 1-Year Est. Return

Walleye Capital's SION Position: Q3 2026 in Review

Walleye Capital increased its Sionna Therapeutics (SION) stake by 366% in Q3 2026, buying an estimated $8.17M and bringing the position to 453,319 shares worth $2.38M. The position accounts for ﹤0.01% of the portfolio, ranked #2656.

Walleye Capital first reported a position in SION in Q1 2026 and has held it in 3 quarters since. The position peaked at $4.28M in Q2 2026. 87 funds tracked by Wall St. Rank hold SION as of Q3 2026.

  • Walleye Capital held 453,319 shares of Sionna Therapeutics worth $2.38M as of Q3 2026.
  • Walleye Capital bought 355,972 Sionna Therapeutics shares in Q3 2026, an estimated $8.17M.
  • Sionna Therapeutics made up ﹤0.01% of Walleye Capital's portfolio in Q3 2026, its #2656 holding.
  • Walleye Capital first reported a position in Sionna Therapeutics in Q1 2026 and has held it in 3 quarters since.
  • Walleye Capital's Sionna Therapeutics position peaked at $4.28M in Q2 2026.
  • 87 funds tracked by Wall St. Rank held Sionna Therapeutics as of Q3 2026.

Based on Walleye Capital's 13F filing for Q3 2026, filed 13 Nov 2026.