Jim Simons
TMO icon

Jim Simons’s Thermo Fisher Scientific TMO Stock Holding History

Jim Simons’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 		$68.3M Buy
+138,964
New +$75.4M 0.11% 231
2025
Q3 		– Sell
-458,950
Closed -$186M – 3925
2025
Q2 		$186M Buy
458,950
+303,706
+196% +$127M 0.25% 67
2025
Q1 		$77.2M Sell
155,244
-26,100
-14% -$14.1M 0.12% 208
2024
Q4 		$94.3M Buy
181,344
+132,393
+270% +$72.8M 0.14% 157
2024
Q3 		$30.3M Sell
48,951
-186,898
-79% -$111M 0.05% 492
2024
Q2 		$130M Buy
+235,849
New +$135M 0.22% 87
2023
Q3 		– Sell
-328,546
Closed -$171M – 4114
2023
Q2 		$171M Buy
+328,546
New +$177M 0.25% 70
2022
Q2 		– Sell
-31,900
Closed -$18.8M – 4575
2022
Q1 		$18.8M Buy
+31,900
New +$18.3M 0.02% 783
2021
Q3 		– Sell
-61,344
Closed -$30.9M – 3842
2021
Q2 		$30.9M Sell
61,344
-261,200
-81% -$123M 0.04% 517
2021
Q1 		$147M Buy
322,544
+251,700
+355% +$120M 0.18% 105
2020
Q4 		$33M Buy
+70,844
New +$33.2M 0.04% 518
2020
Q3 		– Sell
-191,917
Closed -$69.5M – 3685
2020
Q2 		$69.5M Buy
191,917
+65,500
+52% +$22M 0.06% 349
2020
Q1 		$35.9M Buy
+126,417
New +$39.9M 0.03% 496
2018
Q3 		– Sell
-377,044
Closed -$78.1M – 3564
2018
Q2 		$78.1M Buy
377,044
+14,300
+4% +$3.04M 0.09% 279
2018
Q1 		$74.9M Buy
+362,744
New +$76.1M 0.08% 294
2017
Q3 		– Sell
-760,144
Closed -$133M – 3371
2017
Q2 		$133M Sell
760,144
-612,900
-45% -$103M 0.17% 117
2017
Q1 		$211M Buy
1,373,044
+559,400
+69% +$85.5M 0.29% 47
2016
Q4 		$115M Buy
+813,644
New +$120M 0.18% 94
2015
Q3 		– Sell
-188,344
Closed -$24.4M – 3364
2015
Q2 		$24.4M Sell
188,344
-61,800
-25% -$8.06M 0.06% 434
2015
Q1 		$33.6M Buy
250,144
+43,500
+21% +$5.61M 0.07% 361
2014
Q4 		$25.9M Buy
206,644
+168,800
+446% +$20.5M 0.06% 386
2014
Q3 		$4.61M Buy
+37,844
New +$4.6M 0.01% 1212

Other funds holding TMO

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
Franklin Resources
Franklin Resources San Mateo, California $408B AUM 30.18% 1-Year Est. Return
Capital World Investors
Capital World Investors Los Angeles, California $733B AUM 35.63% 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

Jim Simons's TMO Position: Q1 2026 in Review

Jim Simons opened a new position in Thermo Fisher Scientific (TMO) in Q1 2026: 138,964 shares worth $68.3M. The stake represents 0.11% of the portfolio and ranks #231 among its holdings. This is a return to the name: Jim Simons previously reported a position in TMO as recently as Q2 2025.

Jim Simons first reported a position in TMO in Q3 2014 and has held it in 22 quarters since. The position peaked at $211M in Q1 2017. 2,596 funds tracked by Wall St. Rank hold TMO as of Q1 2026.

  • Jim Simons held 138,964 shares of Thermo Fisher Scientific worth $68.3M as of Q1 2026.
  • Thermo Fisher Scientific was a new Jim Simons position in Q1 2026.
  • Thermo Fisher Scientific made up 0.11% of Jim Simons's portfolio in Q1 2026, its #231 holding.
  • Jim Simons first reported a position in Thermo Fisher Scientific in Q3 2014 and has held it in 22 quarters since.
  • Jim Simons's Thermo Fisher Scientific position peaked at $211M in Q1 2017.
  • 2,596 funds tracked by Wall St. Rank held Thermo Fisher Scientific as of Q1 2026.

Based on Renaissance Technologies's 13F filing for Q1 2026, filed 14 May 2026.