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Sienna Gestion’s Thermo Fisher Scientific TMO Stock Holding History

Sienna Gestion’s Portfolio TMO Stock Details TMO Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2025
Q3 		– Sell
-9,681
Closed -$3.58M – 182
2025
Q2 		$3.58M Hold
9,681
– – 0.25% 115
2025
Q1 		$4.68M Sell
9,681
-631
-6% -$342K 0.38% 102
2024
Q4 		$5.36M Buy
+10,312
New +$5.67M 0.36% 99
2024
Q2 		– Sell
-13,756
Closed -$8M – 186
2024
Q1 		$8M Buy
+13,756
New +$7.72M 0.69% 52

Other funds holding TMO

Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return
Capital World Investors
Capital World Investors Los Angeles, California $733B AUM 35.63% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
JP Morgan Chase
JP Morgan Chase New York $1.56T AUM 27.86% 1-Year Est. Return
T. Rowe Price Associates
T. Rowe Price Associates Baltimore, Maryland $865B AUM 30.76% 1-Year Est. Return
Franklin Resources
Franklin Resources San Mateo, California $408B AUM 30.18% 1-Year Est. Return

Sienna Gestion's TMO Position: Q3 2025 in Review

Sienna Gestion sold out of Thermo Fisher Scientific (TMO) in Q3 2025, closing a stake of 9,681 shares — an estimated $3.58M sold.

Sienna Gestion first reported a position in TMO in Q1 2024 and held it in 4 quarters. The position peaked at $8M in Q1 2024. 2,508 funds tracked by Wall St. Rank hold TMO as of Q3 2025.

  • Sienna Gestion reported no remaining Thermo Fisher Scientific position as of Q3 2025 after selling out during the quarter.
  • Sienna Gestion sold 9,681 Thermo Fisher Scientific shares in Q3 2025, an estimated $3.58M.
  • Sienna Gestion first reported a position in Thermo Fisher Scientific in Q1 2024 and held it in 4 quarters.
  • Sienna Gestion's Thermo Fisher Scientific position peaked at $8M in Q1 2024.
  • 2,508 funds tracked by Wall St. Rank held Thermo Fisher Scientific as of Q3 2025.

Based on Sienna Gestion's 13F filing for Q3 2025, filed 13 Nov 2025.