Squarepoint
SION icon

Squarepoint’s Sionna Therapeutics SION Stock Holding History

Squarepoint’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
Q2 		$238K Sell
5,415
-9,802
-64% -$392K ﹤0.01% 3959
2026
Q1 		$610K Sell
15,217
-1,143
-7% -$43.6K ﹤0.01% 3177
2025
Q4 		$673K Buy
16,360
+6,198
+61% +$235K ﹤0.01% 2953
2025
Q3 		$299K Buy
+10,162
New +$221K ﹤0.01% 3673
2025
Q2 		– Sell
-33,964
Closed -$355K – 5206
2025
Q1 		$355K Buy
+33,964
New +$555K ﹤0.01% 3605

Other funds holding SION

RA Capital Management
RA Capital Management Boston, Massachusetts $11.5B AUM 168.77% 1-Year Est. Return
TPG GP A
TPG GP A Fort Worth, Texas $5B AUM 58.56% 1-Year Est. Return
Viking Global Investors
Viking Global Investors Stamford, Connecticut $35.1B AUM 21.36% 1-Year Est. Return
AVLSA
Atlas Venture Life Science Advisors Cambridge, Massachusetts $881M AUM 160.77% 1-Year Est. Return
OrbiMed
OrbiMed New York $5.4B AUM 163.13% 1-Year Est. Return
ES
Enavate Sciences Menlo Park, California $345M AUM 134.64% 1-Year Est. Return
Adage Capital Partners
Adage Capital Partners Boston, Massachusetts $71.3B AUM 56.8% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
JP Morgan Chase
JP Morgan Chase New York $1.81T AUM 41.13% 1-Year Est. Return
Jennison Associates
Jennison Associates New York $167B AUM 44.17% 1-Year Est. Return

Squarepoint's SION Position: Q2 2026 in Review

Squarepoint reduced its Sionna Therapeutics (SION) stake by 64% in Q2 2026, selling an estimated $392K and leaving 5,415 shares worth $238K. The position accounts for ﹤0.01% of the portfolio, ranked #3959.

Squarepoint first reported a position in SION in Q1 2025 and has held it in 5 quarters since. The position peaked at $673K in Q4 2025. 146 funds tracked by Wall St. Rank hold SION as of Q2 2026.

  • Squarepoint held 5,415 shares of Sionna Therapeutics worth $238K as of Q2 2026.
  • Squarepoint sold 9,802 Sionna Therapeutics shares in Q2 2026, an estimated $392K.
  • Sionna Therapeutics made up ﹤0.01% of Squarepoint's portfolio in Q2 2026, its #3959 holding.
  • Squarepoint first reported a position in Sionna Therapeutics in Q1 2025 and has held it in 5 quarters since.
  • Squarepoint's Sionna Therapeutics position peaked at $673K in Q4 2025.
  • 146 funds tracked by Wall St. Rank held Sionna Therapeutics as of Q2 2026.

Based on Squarepoint's 13F filing for Q2 2026, filed 14 Aug 2026.