Thermo Fisher Scientific Inc.
MX ˙ BMV ˙ US8835561023
SecurityMX:TMO / Thermo Fisher Scientific Inc.
InstitutionAdage Capital Partners Gp, L.l.c.
ManagerPhil Gross, Robert Atchinson
Latest Disclosed Ownership545,832 shares
Latest Disclosed Value $ 268,292,803
Adage Capital Partners Gp, L.l.c. reports 3.25% decrease in ownership of TMO / Thermo Fisher Scientific Inc.

On May 15, 2026 - Adage Capital Partners Gp, L.l.c. filed a 13F-HR form disclosing ownership of 545,832 shares of Thermo Fisher Scientific Inc. (MX:TMO) valued at $268,292,803 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 564,168 shares of Thermo Fisher Scientific Inc.. This represents a change in shares of -3.25% during the quarter.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-15 2026-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 545,832 -18,336 -3.25 268,293 -17.93 0.4138
2026-02-17 2025-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 564,168 25,288 4.69 326,907 25.08 0.4947
2025-11-14 2025-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 538,880 213,156 65.44 261,368 97.90 0.4140
2025-08-14 2025-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 325,724 92,272 39.53 132,068 13.69 0.2225
2025-05-15 2025-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 233,452 -156,863 -40.19 116,166 -42.79 0.2152
2025-02-14 2024-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 390,315 32,591 9.11 203,054 -8.24 0.3551
2024-11-14 2024-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 357,724 5,814 1.65 221,277 13.71 0.3907
2024-08-14 2024-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 351,910 -64,312 -15.45 194,606 -19.56 0.3603
2024-05-15 2024-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 416,222 20,121 5.08 241,912 15.06 0.4566
2024-02-14 2023-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 396,101 61,977 18.55 210,246 24.32 0.4353
2023-11-14 2023-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 334,124 18,739 5.94 169,124 2.78 0.3835
2023-08-14 2023-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 315,385 -88,719 -21.95 164,552 -29.35 0.3575
2023-05-15 2023-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 404,104 5,180 1.30 232,913 6.02 0.5224
2023-02-14 2022-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 398,924 -200 -0.05 219,683 8.52 0.5255
2022-11-14 2022-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 399,124 11,700 3.02 202,432 -3.82 0.5021
2022-08-15 2022-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 387,424 -24,100 -5.86 210,480 -13.41 0.4825
2022-05-16 2022-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 411,524 34,900 9.27 243,067 -3.28 0.4616
2022-02-14 2021-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 376,624 -45,400 -10.76 251,299 4.22 0.4524
2021-11-15 2021-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 422,024 13,600 3.33 241,115 17.02 0.4749
2021-08-16 2021-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 408,424 -27,458 -6.30 206,038 3.57 0.4035
2021-05-17 2021-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 435,882 19,600 4.71 198,928 2.60 0.4062
2021-02-16 2020-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 416,282 -26,507 -5.99 193,896 -0.82 0.4227
2020-11-16 2020-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 442,789 -14,500 -3.17 195,500 17.99 0.4894
2020-08-14 2020-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 457,289 -107,200 -18.99 165,694 3.50 0.4243
2020-05-15 2020-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 564,489 97,003 20.75 160,089 5.41 0.4781
2020-02-14 2019-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 467,486 -20,552 -4.21 151,872 6.84 0.3730
2019-11-14 2019-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 488,038 -2,957 -0.60 142,151 -1.42 0.3491
2019-08-14 2019-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 490,995 10,971 2.29 144,195 9.74 0.3590
2019-05-15 2019-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 480,024 4,430 0.93 131,392 23.45 0.3285
2019-02-14 2018-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 475,594 -43,397 -8.36 106,433 -15.98 0.2949
2018-11-14 2018-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 518,991 -15,590 -2.92 126,675 14.40 0.2826
2018-08-14 2018-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 534,581 -5,451 -1.01 110,733 -0.68 0.2536
2018-05-15 2018-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 540,032 221,227 69.39 111,495 84.18 0.2595
2018-02-14 2017-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 318,805 -554,900 -63.51 60,535 -63.38 0.1369
2017-11-14 2017-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 873,705 352,100 67.50 165,305 81.65 0.4017
2017-08-14 2017-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 521,605 -409,309 -43.97 91,004 -36.36 0.2227
2017-05-15 2017-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 930,914 366,009 64.79 142,988 79.39 0.3604
2017-02-14 2016-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 564,905 68,744 13.86 79,708 1.00 0.2177
2016-11-14 2016-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 496,161 -90,200 -15.38 78,919 -8.91 0.2174
2016-08-15 2016-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 586,361 -4,403 -0.75 86,641 3.58 0.2364
2016-05-16 2016-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 590,764 -383,800 -39.38 83,646 -39.49 0.2268
2016-02-16 2015-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 974,564 7,300 0.75 138,242 16.88 0.3623
2015-11-16 2015-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 967,264 247,600 34.40 118,277 26.66 0.3283
2015-08-14 2015-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 719,664 -170,265 -19.13 93,384 -21.89 0.2329
2015-05-15 2015-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 889,929 385,265 76.34 119,553 89.08 0.2914
2015-02-17 2014-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 504,664 -103,141 -16.97 63,229 -14.52 0.1547
2014-11-14 2014-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 607,805 191,800 46.11 73,969 50.69 0.1828
2014-08-14 2014-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 416,005 -477,700 -53.45 49,088 -54.32 0.1269
2014-05-15 2014-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 893,705 93,200 11.64 107,459 20.56 0.2934
2014-02-14 2013-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 800,505 -607,400 -43.14 89,136 -31.30 0.2360
2013-11-14 2013-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 1,407,905 659,626 88.15 129,739 104.87 0.3730
2013-08-14 2013-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 748,279 -295,900 -28.34 63,327 -20.71 0.1952
2013-07-12 2013-03-31 13F/A-1 THERMO FISHER SCIENTIFIC COM 883556102 1,044,179 1,044,179 79,869 0.2639
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.