Alyeska Investment Group
TMO icon

Alyeska Investment Group’s Thermo Fisher Scientific TMO Stock Holding History

Alyeska Investment Group’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 		$189M Buy
376,071
+251,127
+201% +$121M 0.49% 42
2026
Q1 		$61.4M Sell
124,944
-280,603
-69% -$152M 0.17% 161
2025
Q4 		$235M Sell
405,547
-22,000
-5% -$12.4M 0.66% 23
2025
Q3 		$207M Buy
+427,547
New +$199M 0.63% 22
2024
Q4 		– Sell
-40,900
Closed -$25.3M – 662
2024
Q3 		$25.3M Sell
40,900
-217,924
-84% -$129M 0.13% 214
2024
Q2 		$143M Buy
258,824
+29
+0% +$16.6K 0.82% 24
2024
Q1 		$150M Buy
258,795
+16,151
+7% +$9.06M 0.93% 19
2023
Q4 		$129M Buy
+242,644
New +$117M 0.85% 25
2022
Q4 		– Sell
-124,500
Closed -$63.1M – 512
2022
Q3 		$63.1M Sell
124,500
-341
-0.3% -$191K 0.74% 33
2022
Q2 		$67.8M Buy
124,841
+56,591
+83% +$31.1M 0.78% 28
2022
Q1 		$40.3M Sell
68,250
-49,481
-42% -$28.4M 0.44% 70
2021
Q4 		$78.6M Sell
117,731
-6,428
-5% -$4.01M 0.9% 18
2021
Q3 		$70.9M Buy
+124,159
New +$68.1M 0.88% 14
2021
Q2 		– Sell
-30,035
Closed -$13.7M – 838
2021
Q1 		$13.7M Sell
30,035
-16,056
-35% -$7.66M 0.18% 163
2020
Q4 		$21.5M Sell
46,091
-9,808
-18% -$4.6M 0.3% 106
2020
Q3 		$24.7M Sell
55,899
-10,099
-15% -$4.17M 0.38% 85
2020
Q2 		$23.9M Buy
+65,998
New +$22.1M 0.36% 95
2018
Q2 		– Sell
-365,912
Closed -$75.5M – 523
2018
Q1 		$75.5M Buy
+365,912
New +$76.8M 0.63% 52

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

Alyeska Investment Group's TMO Position: Q2 2026 in Review

Alyeska Investment Group increased its Thermo Fisher Scientific (TMO) stake by 201% in Q2 2026, buying an estimated $121M and bringing the position to 376,071 shares worth $189M. The position accounts for 0.49% of the portfolio, ranked #42.

Alyeska Investment Group first reported a position in TMO in Q1 2018 and has held it in 18 quarters since. The position peaked at $235M in Q4 2025. 2,602 funds tracked by Wall St. Rank hold TMO as of Q2 2026.

  • Alyeska Investment Group held 376,071 shares of Thermo Fisher Scientific worth $189M as of Q2 2026.
  • Alyeska Investment Group bought 251,127 Thermo Fisher Scientific shares in Q2 2026, an estimated $121M.
  • Thermo Fisher Scientific made up 0.49% of Alyeska Investment Group's portfolio in Q2 2026, its #42 holding.
  • Alyeska Investment Group first reported a position in Thermo Fisher Scientific in Q1 2018 and has held it in 18 quarters since.
  • Alyeska Investment Group's Thermo Fisher Scientific position peaked at $235M in Q4 2025.
  • 2,602 funds tracked by Wall St. Rank held Thermo Fisher Scientific as of Q2 2026.

Based on Alyeska Investment Group's 13F filing for Q2 2026, filed 14 Aug 2026.