Northern Trust
SION

Northern Trust’s Sionna Therapeutics SION Stock Holding History

Northern Trust’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 		$6.8M Buy
154,476
+37,700
+32% +$1.51M ﹤0.01% 2437
2026
Q1 		$4.68M Buy
116,776
+4,660
+4% +$178K ﹤0.01% 2484
2025
Q4 		$4.61M Buy
112,116
+14,405
+15% +$546K ﹤0.01% 2521
2025
Q3 		$2.87M Buy
97,711
+5,821
+6% +$127K ﹤0.01% 2834
2025
Q2 		$1.59M Buy
91,890
+65,068
+243% +$853K ﹤0.01% 3120
2025
Q1 		$281K Buy
+26,822
New +$438K ﹤0.01% 3817

Other funds holding SION

RCM
RA Capital Management Boston, Massachusetts $11.5B AUM 168.77% 1-Year Est. Return
TGA
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
O
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

Northern Trust's SION Position: Q2 2026 in Review

Northern Trust increased its Sionna Therapeutics (SION) stake by 32% in Q2 2026, buying an estimated $1.51M and bringing the position to 154,476 shares worth $6.8M. The position accounts for ﹤0.01% of the portfolio, ranked #2437.

Northern Trust first reported a position in SION in Q1 2025 and has held it in 6 quarters since. 146 funds tracked by Wall St. Rank hold SION as of Q2 2026.

  • Northern Trust held 154,476 shares of Sionna Therapeutics worth $6.8M as of Q2 2026.
  • Northern Trust bought 37,700 Sionna Therapeutics shares in Q2 2026, an estimated $1.51M.
  • Sionna Therapeutics made up ﹤0.01% of Northern Trust's portfolio in Q2 2026, its #2437 holding.
  • Northern Trust first reported a position in Sionna Therapeutics in Q1 2025 and has held it in 6 quarters since.
  • 146 funds tracked by Wall St. Rank held Sionna Therapeutics as of Q2 2026.

Based on Northern Trust's 13F filing for Q2 2026, filed 13 Aug 2026.