Mariner’s Thermo Fisher Scientific TMO Stock Holding History
Bought
Maintained
Sold
| Quarter | Market Value | Status | Shares |
Change in Stake | Trade Value | Portfolio Weight | Portfolio Position | |
|---|---|---|---|---|---|---|---|---|
|
2026
Q1 | $65.7M | Sell |
133,642
-20,407
| -13% | -$11.1M | 0.08% | 213 |
|
|
2025
Q4 | $89.3M | Buy |
154,049
+2,771
| +2% | +$1.57M | 0.11% | 157 |
|
|
2025
Q3 | $73.4M | Buy |
151,278
+2,374
| +2% | +$1.11M | 0.09% | 173 |
|
|
2025
Q2 | $60.4M | Sell |
148,904
-188,069
| -56% | -$78.6M | 0.09% | 199 |
|
|
2025
Q1 | $168M | Sell |
336,973
-15,005
| -4% | -$8.13M | 0.28% | 71 |
|
|
2024
Q4 | $183M | Buy |
351,978
+3,251
| +0.9% | +$1.79M | 0.31% | 63 |
|
|
2024
Q3 | $216M | Sell |
348,727
-2,337
| -0.7% | -$1.38M | 0.38% | 50 |
|
|
2024
Q2 | $194M | Buy |
351,064
+20,878
| +6% | +$12M | 0.38% | 52 |
|
|
2024
Q1 | $192M | Buy |
330,186
+36,191
| +12% | +$20.3M | 0.4% | 51 |
|
|
2023
Q4 | $156M | Sell |
293,995
-15,446
| -5% | -$7.48M | 0.37% | 57 |
|
|
2023
Q3 | $157M | Buy |
309,441
+14,862
| +5% | +$7.92M | 0.42% | 51 |
|
|
2023
Q2 | $154M | Buy |
294,579
+139
| +0% | +$75K | 0.41% | 50 |
|
|
2023
Q1 | $170M | Buy |
294,440
+8,374
| +3% | +$4.72M | 0.49% | 40 |
|
|
2022
Q4 | $158M | Buy |
286,066
+8,418
| +3% | +$4.46M | 0.51% | 39 |
|
|
2022
Q3 | $141M | Buy |
277,648
+24,233
| +10% | +$13.6M | 0.56% | 34 |
|
|
2022
Q2 | $138M | Buy |
253,415
+9,234
| +4% | +$5.08M | 0.57% | 34 |
|
|
2022
Q1 | $144M | Buy |
244,181
+19,330
| +9% | +$11.1M | 0.54% | 36 |
|
|
2021
Q4 | $150M | Buy |
224,851
+76,500
| +52% | +$47.8M | 0.63% | 27 |
|
|
2021
Q3 | $84.8M | Buy |
148,351
+8,781
| +6% | +$4.82M | 0.44% | 48 |
|
|
2021
Q2 | $70.4M | Buy |
139,570
+14,079
| +11% | +$6.64M | 0.44% | 61 |
|
|
2021
Q1 | $57.3M | Buy |
125,491
+11,391
| +10% | +$5.44M | 0.4% | 65 |
|
|
2020
Q4 | $53.1M | Buy |
114,100
+10,979
| +11% | +$5.15M | 0.41% | 63 |
|
|
2020
Q3 | $45.5M | Buy |
103,121
+6,981
| +7% | +$2.88M | 0.43% | 56 |
|
|
2020
Q2 | $34.8M | Buy |
96,140
+9,858
| +11% | +$3.3M | 0.35% | 83 |
|
|
2020
Q1 | $24.5M | Sell |
86,282
-1,637
| -2% | -$516K | 0.31% | 94 |
|
|
2019
Q4 | $28.6M | Buy |
87,919
+11,084
| +14% | +$3.36M | 0.3% | 98 |
|
|
2019
Q3 | $22.4M | Buy |
76,835
+2,272
| +3% | +$651K | 0.27% | 102 |
|
|
2019
Q2 | $21.9M | Sell |
74,563
-2,568
| -3% | -$707K | 0.26% | 106 |
|
|
2019
Q1 | $21.1M | Buy |
77,131
+2,377
| +3% | +$592K | 0.3% | 97 |
|
|
2018
Q4 | $16.7M | Buy |
74,754
+33,266
| +80% | +$7.8M | 0.3% | 100 |
|
|
2018
Q3 | $10.1M | Buy |
41,488
+1,788
| +5% | +$411K | 0.26% | 94 |
|
|
2018
Q2 | $8.22M | Buy |
39,700
+5,317
| +15% | +$1.13M | 0.23% | 100 |
|
|
2018
Q1 | $7.1M | Sell |
34,383
-1,329
| -4% | -$279K | 0.25% | 89 |
|
|
2017
Q4 | $6.78M | Buy |
35,712
+3,421
| +11% | +$655K | 0.26% | 81 |
|
|
2017
Q3 | $6.11M | Buy |
32,291
+1,840
| +6% | +$333K | 0.28% | 69 |
|
|
2017
Q2 | $5.31M | Sell |
30,451
-2,365
| -7% | -$397K | 0.25% | 78 |
|
|
2017
Q1 | $5.04M | Buy |
32,816
+45
| +0.1% | +$6.88K | 0.22% | 88 |
|
|
2016
Q4 | $4.63M | Buy |
32,771
+4,867
| +17% | +$718K | 0.21% | 92 |
|
|
2016
Q3 | $4.44M | Buy |
27,904
+2,709
| +11% | +$417K | 0.21% | 90 |
|
|
2016
Q2 | $3.72M | Buy |
25,195
+6,033
| +31% | +$890K | 0.2% | 109 |
|
|
2016
Q1 | $2.71M | Buy |
19,162
+2,958
| +18% | +$396K | 0.16% | 123 |
|
|
2015
Q4 | $2.3M | Buy |
16,204
+1,883
| +13% | +$251K | 0.15% | 132 |
|
|
2015
Q3 | $1.75M | Buy |
14,321
+355
| +3% | +$46.3K | 0.08% | 184 |
|
|
2015
Q2 | $1.81M | Buy |
13,966
+4,170
| +43% | +$544K | 0.08% | 186 |
|
|
2015
Q1 | $1.32M | Buy |
9,796
+242
| +3% | +$31.2K | 0.11% | 157 |
|
|
2014
Q4 | $1.2M | Buy |
9,554
+532
| +6% | +$64.7K | 0.11% | 151 |
|
|
2014
Q3 | $1.1M | Buy |
9,022
+5,228
| +138% | +$636K | 0.12% | 144 |
|
|
2014
Q2 | $448K | Buy |
3,794
+2,025
| +114% | +$238K | 0.05% | 238 |
|
|
2014
Q1 | $213K | Sell |
1,769
-3,971
| -69% | -$472K | 0.03% | 300 |
|
|
2013
Q4 | $639K | Sell |
5,740
-205
| -3% | -$20.4K | 0.08% | 199 |
|
|
2013
Q3 | $548K | Buy |
+5,945
| New | +$538K | 0.1% | 180 |
|
Other funds holding TMO
VCM
Mariner's TMO Position: Q1 2026 in Review
Mariner reduced its Thermo Fisher Scientific (TMO) stake by 13% in Q1 2026, selling an estimated $11.1M and leaving 133,642 shares worth $65.7M. The position accounts for 0.08% of the portfolio, ranked #213.
Mariner first reported a position in TMO in Q3 2013 and has held it in 51 quarters since. The position peaked at $216M in Q3 2024. 2,587 funds tracked by Wall St. Rank hold TMO as of Q1 2026.
- Mariner held 133,642 shares of Thermo Fisher Scientific worth $65.7M as of Q1 2026.
- Mariner sold 20,407 Thermo Fisher Scientific shares in Q1 2026, an estimated $11.1M.
- Thermo Fisher Scientific made up 0.08% of Mariner's portfolio in Q1 2026, its #213 holding.
- Mariner first reported a position in Thermo Fisher Scientific in Q3 2013 and has held it in 51 quarters since.
- Mariner's Thermo Fisher Scientific position peaked at $216M in Q3 2024.
- 2,587 funds tracked by Wall St. Rank held Thermo Fisher Scientific as of Q1 2026.
Based on Mariner's 13F filing for Q1 2026, filed 13 May 2026.