Thermo Fisher Scientific Inc.
MX ˙ BMV ˙ US8835561023
SecurityMX:TMO / Thermo Fisher Scientific Inc.
InstitutionFindlay Park Partners LLP
Latest Disclosed Ownership154,740 shares
Latest Disclosed Value $ 76,059,352
Findlay Park Partners LLP reports 39.73% increase in ownership of TMO / Thermo Fisher Scientific Inc.

On May 13, 2026 - Findlay Park Partners LLP filed a 13F-HR form disclosing ownership of 154,740 shares of Thermo Fisher Scientific Inc. (MX:TMO) valued at $76,059,352 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 110,740 shares of Thermo Fisher Scientific Inc.. This represents a change in shares of 39.73% 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)
2026-05-13 2026-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 154,740 44,000 39.73 76,059 18.53 1.0602
2026-02-13 2025-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 110,740 -205,880 -65.02 64,168 -58.21 0.8188
2025-11-12 2025-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 316,620 -5,600 -1.74 153,567 17.54 1.6132
2025-08-13 2025-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 322,220 -11,600 -3.47 130,647 -21.35 1.3471
2025-05-14 2025-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 333,820 4,400 1.34 166,109 -3.07 1.7090
2025-02-14 2024-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 329,420 4,800 1.48 171,374 -14.65 1.7028
2024-11-04 2024-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 324,620 36,700 12.75 200,800 26.12 1.8935
2024-08-13 2024-06-30 13F Thermo Fisher Scientific COM 883556102 287,920 -2,200 -0.76 159,220 -5.58 1.5004
2024-04-30 2024-03-31 13F Thermo Fisher Scientific COM 883556102 290,120 -63,300 -17.91 168,621 -10.11 1.5472
2024-02-07 2023-12-31 13F Thermo Fisher Scientific COM 883556102 353,420 -3,824 -1.07 187,592 3.74 1.8427
2023-11-07 2023-09-30 13F Thermo Fisher Scientific COM 883556102 357,244 76,231 27.13 180,826 23.33 1.9439
2023-08-07 2023-06-30 13F Thermo Fisher Scientific COM 883556102 281,013 -12,559 -4.28 146,619 -13.35 1.5054
2023-05-05 2023-03-31 13F Thermo Fisher Scientific COM 883556102 293,572 -14,753 -4.78 169,206 -0.34 1.7865
2023-02-10 2022-12-31 13F/A-1 Thermo Fisher Scientific COM 883556102 308,325 84,960 38.04 169,791 49.88 1.8479
2023-02-07 2022-12-31 13F Thermo Fisher Scientific COM 883556102 308,325 84,960 170 1.8479
2022-11-10 2022-09-30 13F Thermo Fisher Scientific COM 883556102 223,365 -134,038 -37.50 113,288 -41.66 1.1218
2022-08-18 2022-06-30 13F/A-1 Thermo Fisher Scientific COM 883556102 357,403 -1,718 -0.48 194,170 -8.46 1.8109
2022-08-09 2022-06-30 13F Thermo Fisher Scientific COM 883556102 357,403 -1,718 194,170 1.8109
2022-05-12 2022-03-31 13F Thermo Fisher Scientific COM 883556102 359,121 0 0.00 212,115 -11.48 1.6018
2022-02-10 2021-12-31 13F Thermo Fisher Scientific COM 883556102 359,121 0 0.00 239,620 16.79 1.6006
2021-11-12 2021-09-30 13F Thermo Fisher Scientific COM 883556102 359,121 -1,587 -0.44 205,177 12.76 1.4137
2021-08-09 2021-06-30 13F Thermo Fisher Scientific COM 883556102 360,708 -8,718 -2.36 181,966 7.93 1.2382
2021-05-14 2021-03-31 13F Thermo Fisher Scientific COM 883556102 369,426 -193,542 -34.38 168,599 -35.70 1.1711
2021-02-11 2020-12-31 13F Thermo Fisher Scientific COM 883556102 562,968 -56,007 -9.05 262,219 -4.05 1.8191
2020-11-10 2020-09-30 13F Thermo Fisher Scientific COM 883556102 618,975 -31,025 -4.77 273,290 16.04 1.8904
2020-08-13 2020-06-30 13F Thermo Fisher Scientific COM 883556102 650,000 -106,273 -14.05 235,521 9.81 1.8412
2020-05-14 2020-03-31 13F Thermo Fisher Scientific COM 883556102 756,273 0 0.00 214,479 -12.70 2.0627
2020-02-12 2019-12-31 13F Thermo Fisher Scientific COM 883556102 756,273 0 0.00 245,690 11.54 1.9245
2019-11-05 2019-09-30 13F Thermo Fisher Scientific COM 883556102 756,273 0 0.00 220,280 -0.82 1.9265
2019-08-07 2019-06-30 13F Thermo Fisher Scientific COM 883556102 756,273 -118,727 -13.57 222,102 -7.27 1.9831
2019-05-03 2019-03-31 13F Thermo Fisher Scientific COM 883556102 875,000 0 0.00 239,505 22.31 2.2003
2019-02-12 2018-12-31 13F Thermo Fisher Scientific COM 883556102 875,000 -425,000 -32.69 195,816 -38.29 1.8590
2018-11-07 2018-09-30 13F Thermo Fisher Scientific COM 883556102 1,300,000 -225,000 -14.75 317,304 0.45 2.8158
2018-08-07 2018-06-30 13F Thermo Fisher Scientific COM 883556102 1,525,000 125,000 8.93 315,889 9.29 3.0312
2018-05-09 2018-03-31 13F Thermo Fisher Scientific COM 883556102 1,400,000 -677,151 -32.60 289,044 -26.71 2.8761
2018-02-08 2017-12-31 13F Thermo Fisher Scientific COM 883556102 2,077,151 -30,000 -1.42 394,409 -1.07 3.7514
2017-11-08 2017-09-30 13F Thermo Fisher Scientific COM 883556102 2,107,151 -150,000 -6.65 398,673 1.24 3.9445
2017-08-10 2017-06-30 13F Thermo Fisher Scientific COM 883556102 2,257,151 225,000 11.07 393,805 26.16 4.0188
2017-05-11 2017-03-31 13F Thermo Fisher Scientific COM 883556102 2,032,151 350,000 20.81 312,138 31.51 3.3136
2017-02-13 2016-12-31 13F Thermo Fisher Scientific COM 883556102 1,682,151 390,000 30.18 237,352 15.48 2.8893
2016-11-14 2016-09-30 13F Thermo Fisher Scientific COM 883556102 1,292,151 135,000 11.67 205,530 20.21 2.3804
2016-08-10 2016-06-30 13F Thermo Fisher Scientific COM 883556102 1,157,151 190,000 19.65 170,981 24.86 1.9570
2016-05-10 2016-03-31 13F Thermo Fisher Scientific COM 883556102 967,151 207,151 27.26 136,939 27.02 1.5563
2016-02-16 2015-12-31 13F Thermo Fisher Scientific COM 883556102 760,000 760,000 107,806 1.2261
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.