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Aaron Cowen’s Thermo Fisher Scientific TMO Stock Holding History

Aaron Cowen’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
Q2 		$6.72M Hold
13,400
– – 0.12% 60
2026
Q1 		$6.59M Hold
13,400
– – 0.17% 56
2025
Q4 		$7.76M Hold
13,400
– – 0.16% 66
2025
Q3 		$6.5M Buy
13,400
+5,500
+70% +$2.56M 0.17% 66
2025
Q2 		$3.2M Hold
7,900
– – 0.1% 69
2025
Q1 		$3.93M Hold
7,900
– – 0.15% 67
2024
Q4 		$4.11M Buy
7,900
+640
+9% +$352K 0.14% 67
2024
Q3 		$4.49M Hold
7,260
– – 0.14% 65
2024
Q2 		$4.01M Hold
7,260
– – 0.15% 58
2024
Q1 		$4.22M Hold
7,260
– – 0.16% 64
2023
Q4 		$3.85M Hold
7,260
– – 0.17% 55
2023
Q3 		$3.67M Hold
7,260
– – 0.2% 56
2023
Q2 		$3.79M Buy
7,260
+2,200
+43% +$1.19M 0.2% 65
2023
Q1 		$2.92M Buy
5,060
+1,700
+51% +$958K 0.12% 62
2022
Q4 		$1.85M Sell
3,360
-111,365
-97% -$59M 0.08% 66
2022
Q3 		$58.2M Sell
114,725
-6,650
-5% -$3.72M 2.42% 18
2022
Q2 		$65.9M Buy
121,375
+6,306
+5% +$3.47M 2.51% 14
2022
Q1 		$68M Sell
115,069
-155,401
-57% -$89.3M 2.08% 21
2021
Q4 		$180M Sell
270,470
-55,340
-17% -$34.6M 3.49% 8
2021
Q3 		$186M Buy
+325,810
New +$179M 3.14% 9
2015
Q1 		– Sell
-468,500
Closed -$58.7M – 37
2014
Q4 		$58.7M Buy
468,500
+70,800
+18% +$8.61M 4.18% 11
2014
Q3 		$48.4M Buy
397,700
+164,100
+70% +$20M 4.23% 8
2014
Q2 		$27.6M Sell
233,600
-15,900
-6% -$1.87M 2.49% 22
2014
Q1 		$30M Sell
249,500
-72,500
-23% -$8.62M 3.57% 13
2013
Q4 		$35.9M Buy
+322,000
New +$32M 4.81% 3

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
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return
JP Morgan Chase
JP Morgan Chase New York $1.81T AUM 41.13% 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
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Capital World Investors
Capital World Investors Los Angeles, California $846B AUM 46.74% 1-Year Est. Return

Aaron Cowen's TMO Position: Q2 2026 in Review

Aaron Cowen held its Thermo Fisher Scientific (TMO) position steady in Q2 2026 at 13,400 shares worth $6.72M. The position accounts for 0.12% of the portfolio, ranked #60.

Aaron Cowen first reported a position in TMO in Q4 2013 and has held it in 25 quarters since. The position peaked at $186M in Q3 2021. 2,606 funds tracked by Wall St. Rank hold TMO as of Q2 2026.

  • Aaron Cowen held 13,400 shares of Thermo Fisher Scientific worth $6.72M as of Q2 2026.
  • Aaron Cowen left its Thermo Fisher Scientific share count unchanged in Q2 2026.
  • Thermo Fisher Scientific made up 0.12% of Aaron Cowen's portfolio in Q2 2026, its #60 holding.
  • Aaron Cowen first reported a position in Thermo Fisher Scientific in Q4 2013 and has held it in 25 quarters since.
  • Aaron Cowen's Thermo Fisher Scientific position peaked at $186M in Q3 2021.
  • 2,606 funds tracked by Wall St. Rank held Thermo Fisher Scientific as of Q2 2026.

Based on Suvretta Capital Management's 13F filing for Q2 2026, filed 14 Aug 2026.