Franklin Resources
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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
Q3 		– Sell
-290,113
Closed -$12.8M – 3362
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

Atlas Venture Life Science Advisors
Atlas Venture Life Science Advisors Cambridge, Massachusetts $631M AUM 38.42% 1-Year Est. Return
BlackRock
BlackRock New York $6.79T AUM 37.06% 1-Year Est. Return
Aberdeen Group
Aberdeen Group Edinburgh, United Kingdom $72.4B AUM 31.32% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.76T AUM
Y-Intercept (HK)
Y-Intercept (HK) Hong Kong $4.52B AUM 6.6% 1-Year Est. Return
Acadian Asset Management
Acadian Asset Management Boston, Massachusetts $85.7B AUM 51.02% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.92T AUM 36.1% 1-Year Est. Return
Walleye Capital
Walleye Capital New York $109B AUM 29.28% 1-Year Est. Return
Marshall Wace
Marshall Wace London, United Kingdom $114B AUM 35.47% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.44T AUM 36.12% 1-Year Est. Return

Franklin Resources's SION Position: Q3 2026 in Review

Franklin Resources sold out of Sionna Therapeutics (SION) in Q3 2026, closing a stake of 290,113 shares — an estimated $12.8M sold.

Franklin Resources first reported a position in SION in Q1 2025 and held it in 6 quarters. The position peaked at $12.8M in Q2 2026. 87 funds tracked by Wall St. Rank hold SION as of Q3 2026.

  • Franklin Resources reported no remaining Sionna Therapeutics position as of Q3 2026 after selling out during the quarter.
  • Franklin Resources sold 290,113 Sionna Therapeutics shares in Q3 2026, an estimated $12.8M.
  • Franklin Resources first reported a position in Sionna Therapeutics in Q1 2025 and held it in 6 quarters.
  • Franklin Resources's Sionna Therapeutics position peaked at $12.8M in Q2 2026.
  • 87 funds tracked by Wall St. Rank held Sionna Therapeutics as of Q3 2026.

Based on Franklin Resources's 13F filing for Q3 2026, filed 12 Nov 2026.