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Avidity Partners Management’s Thermo Fisher Scientific TMO Stock Holding History

Avidity Partners Management’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
2026
Q1 		– Sell
-6,700
Closed -$3.88M – 66
2025
Q4 		$3.88M Sell
6,700
-12,200
-65% -$6.9M 1.12% 19
2025
Q3 		$9.17M Sell
18,900
-10,700
-36% -$4.98M 2.09% 13
2025
Q2 		$12M Buy
29,600
+14,100
+91% +$5.9M 2.39% 13
2025
Q1 		$7.71M Sell
15,500
-29,100
-65% -$15.8M 1.47% 24
2024
Q4 		$23.2M Sell
44,600
-24,000
-35% -$13.2M 2.28% 17
2024
Q3 		$42.4M Sell
68,600
-11,400
-14% -$6.75M 2.16% 15
2024
Q2 		$44.2M Buy
80,000
+43,400
+119% +$24.9M 1.88% 17
2024
Q1 		$21.3M Sell
36,600
-146,000
-80% -$81.9M 0.69% 48
2023
Q4 		$96.9M Buy
+182,600
New +$88.4M 3.53% 4
2020
Q4 		– Sell
-118,300
Closed -$52.2M – 116
2020
Q3 		$52.2M Buy
+118,300
New +$48.9M 2.42% 12

Other funds holding TMO

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Franklin Resources
Franklin Resources San Mateo, California $462B AUM 39.16% 1-Year Est. Return
Capital World Investors
Capital World Investors Los Angeles, California $846B AUM 46.74% 1-Year Est. Return
JP Morgan Chase
JP Morgan Chase New York $1.81T AUM 41.13% 1-Year Est. Return
T. Rowe Price Associates
T. Rowe Price Associates Baltimore, Maryland $999B AUM 46.22% 1-Year Est. Return

Avidity Partners Management's TMO Position: Q1 2026 in Review

Avidity Partners Management sold out of Thermo Fisher Scientific (TMO) in Q1 2026, closing a stake of 6,700 shares — an estimated $3.88M sold.

Avidity Partners Management first reported a position in TMO in Q3 2020 and held it in 10 quarters. The position peaked at $96.9M in Q4 2023. 2,600 funds tracked by Wall St. Rank hold TMO as of Q1 2026.

  • Avidity Partners Management reported no remaining Thermo Fisher Scientific position as of Q1 2026 after selling out during the quarter.
  • Avidity Partners Management sold 6,700 Thermo Fisher Scientific shares in Q1 2026, an estimated $3.88M.
  • Avidity Partners Management first reported a position in Thermo Fisher Scientific in Q3 2020 and held it in 10 quarters.
  • Avidity Partners Management's Thermo Fisher Scientific position peaked at $96.9M in Q4 2023.
  • 2,600 funds tracked by Wall St. Rank held Thermo Fisher Scientific as of Q1 2026.

Based on Avidity Partners Management's 13F filing for Q1 2026, filed 13 May 2026.