TRCT
SION

Tower Research Capital (TRC)’s Sionna Therapeutics SION Stock Holding History

Tower Research Capital (TRC)’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
Q1 		$94.3K Buy
2,352
+1,223
+108% +$46.7K ﹤0.01% 2232
2025
Q4 		$46.4K Sell
1,129
-3,361
-75% -$127K ﹤0.01% 2478
2025
Q3 		$132K Buy
+4,490
New +$97.7K ﹤0.01% 1792

Other funds holding SION

RCM
RA Capital Management Boston, Massachusetts $9.44B AUM 157.3% 1-Year Est. Return
TGA
TPG GP A Fort Worth, Texas $3.68B AUM 14.99% 1-Year Est. Return
O
OrbiMed New York $5.05B AUM 125.28% 1-Year Est. Return
Viking Global Investors
Viking Global Investors Stamford, Connecticut $35.7B AUM 21.3% 1-Year Est. Return
AVLSA
Atlas Venture Life Science Advisors Cambridge, Massachusetts $790M AUM 223.66% 1-Year Est. Return
ES
Enavate Sciences Menlo Park, California $352M AUM 220.14% 1-Year Est. Return
Jennison Associates
Jennison Associates New York $145B AUM 34.61% 1-Year Est. Return
JP Morgan Chase
JP Morgan Chase New York $1.56T AUM 27.86% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
Citadel Advisors
Citadel Advisors Miami, Florida $618B AUM 30.34% 1-Year Est. Return

Tower Research Capital (TRC)'s SION Position: Q1 2026 in Review

Tower Research Capital (TRC) increased its Sionna Therapeutics (SION) stake by 108% in Q1 2026, buying an estimated $46.7K and bringing the position to 2,352 shares worth $94.3K. The position accounts for ﹤0.01% of the portfolio, ranked #2232.

Tower Research Capital (TRC) first reported a position in SION in Q3 2025 and has held it in 3 quarters since. The position peaked at $132K in Q3 2025. 122 funds tracked by Wall St. Rank hold SION as of Q1 2026.

  • Tower Research Capital (TRC) held 2,352 shares of Sionna Therapeutics worth $94.3K as of Q1 2026.
  • Tower Research Capital (TRC) bought 1,223 Sionna Therapeutics shares in Q1 2026, an estimated $46.7K.
  • Sionna Therapeutics made up ﹤0.01% of Tower Research Capital (TRC)'s portfolio in Q1 2026, its #2232 holding.
  • Tower Research Capital (TRC) first reported a position in Sionna Therapeutics in Q3 2025 and has held it in 3 quarters since.
  • Tower Research Capital (TRC)'s Sionna Therapeutics position peaked at $132K in Q3 2025.
  • 122 funds tracked by Wall St. Rank held Sionna Therapeutics as of Q1 2026.

Based on Tower Research Capital (TRC)'s 13F filing for Q1 2026, filed 15 May 2026.