Wells Fargo
SION

Wells Fargo’s Sionna Therapeutics SION Stock Holding History

Wells Fargo’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 		$740K Buy
16,821
+10,927
+185% +$437K ﹤0.01% 4318
2026
Q1 		$236K Sell
5,894
-11,657
-66% -$445K ﹤0.01% 4611
2025
Q4 		$722K Buy
17,551
+9,975
+132% +$378K ﹤0.01% 4209
2025
Q3 		$223K Buy
7,576
+1,202
+19% +$26.2K ﹤0.01% 4879
2025
Q2 		$111K Buy
+6,374
New +$83.5K ﹤0.01% 5126

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

Wells Fargo's SION Position: Q2 2026 in Review

Wells Fargo increased its Sionna Therapeutics (SION) stake by 185% in Q2 2026, buying an estimated $437K and bringing the position to 16,821 shares worth $740K. The position accounts for ﹤0.01% of the portfolio, ranked #4318.

Wells Fargo first reported a position in SION in Q2 2025 and has held it in 5 quarters since. 146 funds tracked by Wall St. Rank hold SION as of Q2 2026.

  • Wells Fargo held 16,821 shares of Sionna Therapeutics worth $740K as of Q2 2026.
  • Wells Fargo bought 10,927 Sionna Therapeutics shares in Q2 2026, an estimated $437K.
  • Sionna Therapeutics made up ﹤0.01% of Wells Fargo's portfolio in Q2 2026, its #4318 holding.
  • Wells Fargo first reported a position in Sionna Therapeutics in Q2 2025 and has held it in 5 quarters since.
  • 146 funds tracked by Wall St. Rank held Sionna Therapeutics as of Q2 2026.

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