Calamos Advisors’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 | $68.4M | Sell |
139,230
-30,670
| -18% | -$16.6M | 0.24% | 90 |
|
|
2025
Q4 | $98.4M | Buy |
169,900
+22,200
| +15% | +$12.6M | 0.37% | 48 |
|
|
2025
Q3 | $71.6M | Buy |
147,700
+27,510
| +23% | +$12.8M | 0.26% | 79 |
|
|
2025
Q2 | $48.7M | Sell |
120,190
-22,500
| -16% | -$9.41M | 0.19% | 117 |
|
|
2025
Q1 | $71M | Sell |
142,690
-3,110
| -2% | -$1.68M | 0.31% | 66 |
|
|
2024
Q4 | $75.8M | Buy |
145,800
+3,458
| +2% | +$1.9M | 0.32% | 59 |
|
|
2024
Q3 | $88M | Buy |
142,342
+1,672
| +1% | +$990K | 0.38% | 47 |
|
|
2024
Q2 | $77.8M | Sell |
140,670
-3,011
| -2% | -$1.72M | 0.35% | 52 |
|
|
2024
Q1 | $83.5M | Buy |
143,681
+58
| +0% | +$32.5K | 0.4% | 49 |
|
|
2023
Q4 | $76.2M | Sell |
143,623
-23,327
| -14% | -$11.3M | 0.37% | 55 |
|
|
2023
Q3 | $84.5M | Buy |
166,950
+7,011
| +4% | +$3.74M | 0.44% | 39 |
|
|
2023
Q2 | $83.4M | Buy |
159,939
+12,622
| +9% | +$6.81M | 0.41% | 45 |
|
|
2023
Q1 | $84.9M | Sell |
147,317
-11,999
| -8% | -$6.76M | 0.41% | 46 |
|
|
2022
Q4 | $87.7M | Sell |
159,316
-37,886
| -19% | -$20.1M | 0.41% | 44 |
|
|
2022
Q3 | $100M | Buy |
197,202
+10,783
| +6% | +$6.03M | 0.46% | 30 |
|
|
2022
Q2 | $101M | Buy |
186,419
+9,333
| +5% | +$5.14M | 0.44% | 33 |
|
|
2022
Q1 | $105M | Buy |
177,086
+4,401
| +3% | +$2.53M | 0.39% | 38 |
|
|
2021
Q4 | $115M | Buy |
172,685
+40,532
| +31% | +$25.3M | 0.43% | 33 |
|
|
2021
Q3 | $75.5M | Buy |
132,153
+35,890
| +37% | +$19.7M | 0.33% | 69 |
|
|
2021
Q2 | $48.6M | Sell |
96,263
-12,858
| -12% | -$6.07M | 0.22% | 115 |
|
|
2021
Q1 | $49.8M | Sell |
109,121
-34,820
| -24% | -$16.6M | 0.27% | 83 |
|
|
2020
Q4 | $67M | Buy |
143,941
+6,691
| +5% | +$3.14M | 0.39% | 53 |
|
|
2020
Q3 | $60.6M | Buy |
137,250
+43,231
| +46% | +$17.9M | 0.39% | 53 |
|
|
2020
Q2 | $34.1M | Sell |
94,019
-2,962
| -3% | -$993K | 0.24% | 117 |
|
|
2020
Q1 | $27.5M | Sell |
96,981
-42,086
| -30% | -$13.3M | 0.22% | 137 |
|
|
2019
Q4 | $45.2M | Sell |
139,067
-1,133
| -0.8% | -$344K | 0.22% | 128 |
|
|
2019
Q3 | $40.8M | Buy |
140,200
+5,131
| +4% | +$1.47M | 0.22% | 131 |
|
|
2019
Q2 | $39.7M | Buy |
135,069
+2,618
| +2% | +$721K | 0.22% | 132 |
|
|
2019
Q1 | $36.3M | Sell |
132,451
-11
| -0% | -$2.74K | 0.23% | 145 |
|
|
2018
Q4 | $29.6M | Buy |
132,462
+6,769
| +5% | +$1.59M | 0.2% | 152 |
|
|
2018
Q3 | $30.7M | Sell |
125,693
-18,165
| -13% | -$4.18M | 0.17% | 162 |
|
|
2018
Q2 | $29.8M | Sell |
143,858
-2,061
| -1% | -$437K | 0.18% | 151 |
|
|
2018
Q1 | $30.1M | Buy |
145,919
+2,643
| +2% | +$555K | 0.2% | 143 |
|
|
2017
Q4 | $27.2M | Sell |
143,276
-3,988
| -3% | -$764K | 0.14% | 162 |
|
|
2017
Q3 | $27.9M | Buy |
147,264
+2,267
| +2% | +$411K | 0.22% | 144 |
|
|
2017
Q2 | $25.3M | Sell |
144,997
-21,685
| -13% | -$3.64M | 0.19% | 162 |
|
|
2017
Q1 | $25.6M | Buy |
166,682
+83,598
| +101% | +$12.8M | 0.2% | 153 |
|
|
2016
Q4 | $11.7M | Sell |
83,084
-1,158
| -1% | -$171K | 0.09% | 243 |
|
|
2016
Q3 | $13.4M | Buy |
84,242
+236
| +0.3% | +$36.4K | 0.1% | 240 |
|
|
2016
Q2 | $12.4M | Sell |
84,006
-25,369
| -23% | -$3.74M | 0.09% | 247 |
|
|
2016
Q1 | $15.5M | Buy |
109,375
+31,200
| +40% | +$4.18M | 0.1% | 217 |
|
|
2015
Q4 | $11.1M | Buy |
78,175
+1,218
| +2% | +$162K | 0.07% | 260 |
|
|
2015
Q3 | $9.41M | Buy |
76,957
+27
| +0% | +$3.52K | 0.06% | 270 |
|
|
2015
Q2 | $9.98M | Sell |
76,930
-4,340
| -5% | -$566K | 0.06% | 263 |
|
|
2015
Q1 | $10.9M | Buy |
81,270
+48
| +0.1% | +$6.19K | 0.07% | 255 |
|
|
2014
Q4 | $10.2M | Buy |
81,222
+422
| +0.5% | +$51.3K | 0.07% | 265 |
|
|
2014
Q3 | $9.83M | Hold |
80,800
| – | – | 0.07% | 259 |
|
|
2014
Q2 | $9.53M | Buy |
80,800
+5,800
| +8% | +$683K | 0.06% | 254 |
|
|
2014
Q1 | $9.02M | Hold |
75,000
| – | – | 0.06% | 254 |
|
|
2013
Q4 | $8.35M | Hold |
75,000
| – | – | 0.05% | 259 |
|
|
2013
Q3 | $6.91M | Buy |
75,000
+30,000
| +67% | +$2.71M | 0.04% | 270 |
|
|
2013
Q2 | $3.81M | Buy |
+45,000
| New | +$3.75M | 0.02% | 317 |
|
Other funds holding TMO
VCM
Calamos Advisors's TMO Position: Q1 2026 in Review
Calamos Advisors reduced its Thermo Fisher Scientific (TMO) stake by 18% in Q1 2026, selling an estimated $16.6M and leaving 139,230 shares worth $68.4M. The position accounts for 0.24% of the portfolio, ranked #90.
Calamos Advisors first reported a position in TMO in Q2 2013 and has held it in 52 quarters since. The position peaked at $115M in Q4 2021. 2,587 funds tracked by Wall St. Rank hold TMO as of Q1 2026.
- Calamos Advisors held 139,230 shares of Thermo Fisher Scientific worth $68.4M as of Q1 2026.
- Calamos Advisors sold 30,670 Thermo Fisher Scientific shares in Q1 2026, an estimated $16.6M.
- Thermo Fisher Scientific made up 0.24% of Calamos Advisors's portfolio in Q1 2026, its #90 holding.
- Calamos Advisors first reported a position in Thermo Fisher Scientific in Q2 2013 and has held it in 52 quarters since.
- Calamos Advisors's Thermo Fisher Scientific position peaked at $115M in Q4 2021.
- 2,587 funds tracked by Wall St. Rank held Thermo Fisher Scientific as of Q1 2026.
Based on Calamos Advisors's 13F filing for Q1 2026, filed 4 May 2026.