Thermo Fisher Scientific Inc.
MX ˙ BMV ˙ US8835561023
SecurityMX:TMO / Thermo Fisher Scientific Inc.
InstitutionMercer Global Advisors Inc /adv
Latest Disclosed Ownership36,715 shares
Latest Disclosed Value $ 18,046,419
Mercer Global Advisors Inc /adv reports 5.62% decrease in ownership of TMO / Thermo Fisher Scientific Inc.

On May 15, 2026 - Mercer Global Advisors Inc /adv filed a 13F-HR form disclosing ownership of 36,715 shares of Thermo Fisher Scientific Inc. (MX:TMO) valued at $18,046,419 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 38,903 shares of Thermo Fisher Scientific Inc.. This represents a change in shares of -5.62% 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 36,715 -2,188 -5.62 18,046 -19.94 0.0267
2026-02-17 2025-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 38,903 4,697 13.73 22,543 35.87 0.0344
2025-11-14 2025-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 34,206 3,970 13.13 16,591 35.33 0.0277
2025-08-14 2025-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 30,236 4,428 17.16 12,260 -4.53 0.0250
2025-05-15 2025-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 25,808 1,272 5.18 12,842 0.61 0.0295
2025-02-14 2024-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 24,536 -13,867 -36.11 12,764 -45.77 0.0311
2024-11-14 2024-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 38,403 2,936 8.28 23,539 20.58 0.0551
2024-08-12 2024-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 35,467 9,656 37.41 19,522 130,040.00 0.0532
2024-05-15 2024-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 25,811 834 3.34 15 15.38 0.0428
2024-02-15 2023-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 24,977 1,706 7.33 13 18.18 0.0399
2023-11-15 2023-09-30 13F/A-1 THERMO FISHER SCIENTIFIC COM 883556102 23,271 -4,235 -15.40 12 -21.43 0.0447
2023-11-14 2023-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 23,271 -4,235 12 0.0447
2023-08-14 2023-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 27,506 -1,064 -3.72 14 -12.50 0.0570
2023-05-16 2023-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 28,570 -390 -1.35 16 6.67 0.0748
2023-02-09 2022-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 28,960 -5,755 -16.58 16 -99.91 0.0799
2022-11-15 2022-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 34,715 -2,980 -7.91 17,606 -14.03 0.1045
2022-08-10 2022-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 37,695 -1,130 -2.91 20,479 -10.70 0.1253
2022-05-10 2022-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 38,825 3,598 10.21 22,932 -2.44 0.1351
2022-02-04 2021-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 35,227 3,091 9.62 23,505 28.02 0.1451
2021-11-10 2021-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 32,136 1,383 4.50 18,360 18.34 0.1282
2021-08-10 2021-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 30,753 3,405 12.45 15,514 24.30 0.1193
2021-08-10 2021-03-31 13F/A-1 THERMO FISHER SCIENTIFIC COM 883556102 27,348 6,873 33.57 12,481 30.87 0.1135
2021-05-11 2021-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 27,131 6,656 12,382 0.1185
2021-02-12 2020-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 20,475 761 3.86 9,537 9.57 0.1191
2020-12-10 2020-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 19,714 -3,564 -15.31 8,704 3.20 0.1309
2020-08-10 2020-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 23,278 -570 -2.39 8,434 24.71 0.1531
2020-05-18 2020-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 23,848 5,622 30.85 6,763 14.22 0.1488
2020-02-13 2019-12-31 13F THERMO FISHER SCIENTIFIC INC COM COM 883556102 18,226 1,281 7.56 5,921 19.98 0.1182
2019-11-12 2019-09-30 13F THERMO FISHER SCIENTIFIC INC COM COM 883556102 16,945 370 2.23 4,935 1.38 0.1161
2019-08-14 2019-06-30 13F THERMO FISHER SCIENTIFIC INC COM COM 883556102 16,575 52 0.31 4,868 7.63 0.1290
2019-04-23 2019-03-31 13F/A-1 THERMO FISHER SCIENTIFIC INC COM COM 883556102 16,523 16,523 4,523 0.1627
2019-04-12 2019-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 14,071 3,149 0.1678
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.