Franklin Resources
SION

Franklin Resources’s Sionna Therapeutics SION Stock Holding History

Franklin Resources’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 		$12.8M Buy
290,113
+114,630
+65% +$4.59M ﹤0.01% 1162
2026
Q1 		$7.04M Hold
175,483
– – ﹤0.01% 1380
2025
Q4 		$7.22M Sell
175,483
-66,664
-28% -$2.53M ﹤0.01% 1266
2025
Q3 		$7.12M Sell
242,147
-257,876
-52% -$5.61M ﹤0.01% 1285
2025
Q2 		$8.68M Hold
500,023
– – ﹤0.01% 1176
2025
Q1 		$5.23M Buy
+500,023
New +$8.17M ﹤0.01% 1330

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

Franklin Resources's SION Position: Q2 2026 in Review

Franklin Resources increased its Sionna Therapeutics (SION) stake by 65% in Q2 2026, buying an estimated $4.59M and bringing the position to 290,113 shares worth $12.8M. The position accounts for ﹤0.01% of the portfolio, ranked #1162.

Franklin Resources 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.

  • Franklin Resources held 290,113 shares of Sionna Therapeutics worth $12.8M as of Q2 2026.
  • Franklin Resources bought 114,630 Sionna Therapeutics shares in Q2 2026, an estimated $4.59M.
  • Sionna Therapeutics made up ﹤0.01% of Franklin Resources's portfolio in Q2 2026, its #1162 holding.
  • Franklin Resources 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 Franklin Resources's 13F filing for Q2 2026, filed 13 Aug 2026.