Diamond Hill Capital Management
TMO icon

Diamond Hill Capital Management’s Thermo Fisher Scientific TMO Stock Holding History

Diamond Hill Capital 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 		$177M Sell
360,652
-99,649
-22% -$54.1M 1.11% 31
2025
Q4 		$267M Sell
460,301
-39,639
-8% -$22.4M 1.37% 27
2025
Q3 		$242M Buy
+499,940
New +$233M 1.15% 36
2020
Q4 		– Sell
-2,529
Closed -$1.12M – 154
2020
Q3 		$1.12M Sell
2,529
-491,241
-99% -$203M 0.01% 133
2020
Q2 		$179M Sell
493,770
-212,286
-30% -$71.2M 1.05% 39
2020
Q1 		$200M Sell
706,056
-11,877
-2% -$3.75M 1.36% 29
2019
Q4 		$233M Sell
717,933
-6,878
-0.9% -$2.09M 1.17% 35
2019
Q3 		$211M Sell
724,811
-2,053
-0.3% -$588K 1.12% 37
2019
Q2 		$213M Sell
726,864
-6,153
-0.8% -$1.69M 1.14% 35
2019
Q1 		$201M Sell
733,017
-18,541
-2% -$4.61M 1.1% 34
2018
Q4 		$168M Sell
751,558
-174,254
-19% -$40.9M 0.99% 36
2018
Q3 		$226M Sell
925,812
-172,817
-16% -$39.8M 1.13% 35
2018
Q2 		$228M Buy
1,098,629
+11,013
+1% +$2.34M 1.17% 33
2018
Q1 		$225M Sell
1,087,616
-13,411
-1% -$2.81M 1.15% 32
2017
Q4 		$209M Buy
1,101,027
+25,423
+2% +$4.87M 1.05% 38
2017
Q3 		$204M Buy
1,075,604
+360,911
+50% +$65.4M 1.07% 38
2017
Q2 		$125M Buy
714,693
+66,097
+10% +$11.1M 0.67% 54
2017
Q1 		$99.6M Buy
648,596
+1,094
+0.2% +$167K 0.56% 62
2016
Q4 		$91.4M Buy
647,502
+95,825
+17% +$14.1M 0.53% 67
2016
Q3 		$87.8M Sell
551,677
-22,388
-4% -$3.45M 0.54% 65
2016
Q2 		$84.8M Sell
574,065
-6,857
-1% -$1.01M 0.54% 62
2016
Q1 		$82.3M Buy
+580,922
New +$77.9M 0.52% 58

Other funds holding TMO

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
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
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

Diamond Hill Capital Management's TMO Position: Q1 2026 in Review

Diamond Hill Capital Management reduced its Thermo Fisher Scientific (TMO) stake by 22% in Q1 2026, selling an estimated $54.1M and leaving 360,652 shares worth $177M. The position accounts for 1.11% of the portfolio, ranked #31.

Diamond Hill Capital Management first reported a position in TMO in Q1 2016 and has held it in 22 quarters since. The position peaked at $267M in Q4 2025. 2,587 funds tracked by Wall St. Rank hold TMO as of Q1 2026.

  • Diamond Hill Capital Management held 360,652 shares of Thermo Fisher Scientific worth $177M as of Q1 2026.
  • Diamond Hill Capital Management sold 99,649 Thermo Fisher Scientific shares in Q1 2026, an estimated $54.1M.
  • Thermo Fisher Scientific made up 1.11% of Diamond Hill Capital Management's portfolio in Q1 2026, its #31 holding.
  • Diamond Hill Capital Management first reported a position in Thermo Fisher Scientific in Q1 2016 and has held it in 22 quarters since.
  • Diamond Hill Capital Management's Thermo Fisher Scientific position peaked at $267M in Q4 2025.
  • 2,587 funds tracked by Wall St. Rank held Thermo Fisher Scientific as of Q1 2026.

Based on Diamond Hill Capital Management's 13F filing for Q1 2026, filed 7 May 2026.