Thermo Fisher Scientific Inc.
MX ˙ BMV ˙ US8835561023
SecurityMX:TMO / Thermo Fisher Scientific Inc.
InstitutionIpswich Investment Management Co., Inc.
Latest Disclosed Ownership3,708 shares
Latest Disclosed Value $ 1,822,593
Ipswich Investment Management Co., Inc. reports 0.22% increase in ownership of TMO / Thermo Fisher Scientific Inc.

On April 10, 2026 - Ipswich Investment Management Co., Inc. filed a 13F-HR form disclosing ownership of 3,708 shares of Thermo Fisher Scientific Inc. (MX:TMO) valued at $1,822,593 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 16, 2026 disclosing 3,700 shares of Thermo Fisher Scientific Inc.. This represents a change in shares of 0.22% 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)
2026-04-10 2026-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 3,708 8 0.22 1,823 -14.98 0.4280
2026-01-16 2025-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 3,700 8 0.22 2,144 19.72 0.4965
2025-10-08 2025-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 3,692 -678 -15.51 1,791 1.07 0.4182
2025-07-16 2025-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 4,370 -2,075 -32.20 1,772 -44.78 0.4275
2025-04-16 2025-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 6,445 -4 -0.06 3,207 -4.38 0.7959
2025-02-03 2024-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 6,449 -400 -5.84 3,355 -20.82 0.8072
2024-11-06 2024-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 6,849 3 0.04 4,237 11.92 0.9810
2024-07-16 2024-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 6,846 65 0.96 3,786 -3.96 0.8861
2024-04-19 2024-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 6,781 12 0.18 3,941 9.72 0.9231
2024-01-31 2023-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 6,769 120 1.80 3,593 6.75 0.9084
2023-11-08 2023-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 6,649 -91 -1.35 3,366 -4.29 0.9188
2023-07-27 2023-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 6,740 8 0.12 3,517 -9.38 0.9257
2023-04-24 2023-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 6,732 -118 -1.72 3,880 2.86 1.0606
2023-02-01 2022-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 6,850 -30 -0.44 3,772 8.11 1.0798
2022-10-11 2022-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 6,880 -212 -2.99 3,489 -9.45 1.1106
2022-07-26 2022-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 7,092 -21 -0.30 3,853 -8.28 1.1086
2022-04-25 2022-03-31 13F/A-1 THERMO FISHER SCIENTIFIC COM 883556102 7,113 -70 -0.97 4,201 -12.35 1.0431
2022-04-12 2022-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 7,113 -70 4,201 1.0431
2022-01-24 2021-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 7,183 -175 -2.38 4,793 14.01 1.1185
2021-10-07 2021-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 7,358 142 1.97 4,204 15.49 1.0759
2021-08-05 2021-06-30 13F THERMO FISHER SCIENTIFIC INC COM Stock 883556102 7,216 188 2.68 3,640 13.50 0.9305
2021-04-09 2021-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 7,028 330 4.93 3,207 2.79 0.9022
2021-02-05 2020-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 6,698 165 2.53 3,120 8.18 0.9365
2020-10-06 2020-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 6,533 -76 -1.15 2,884 20.42 0.9241
2020-07-09 2020-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 6,609 -164 -2.42 2,395 24.67 0.8249
2020-04-09 2020-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 6,773 -968 -12.50 1,921 -23.62 0.7551
2020-01-08 2019-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 7,741 -25 -0.32 2,515 11.18 0.7395
2019-10-08 2019-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 7,766 -7 -0.09 2,262 -0.92 0.7208
2019-07-11 2019-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 7,773 35 0.45 2,283 7.79 0.7290
2019-04-12 2019-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 7,738 350 4.74 2,118 28.13 0.6923
2019-01-15 2018-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 7,388 40 0.54 1,653 -7.81 0.6059
2018-10-09 2018-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 7,348 7,348 1,793 0.6062
2018-07-18 2018-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 0 -7,932 -100.00 0 -100.00
2018-04-12 2018-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 7,932 -58 -0.73 1,638 7.98 0.6910
2018-01-16 2017-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 7,990 30 0.38 1,517 0.73 0.6422
2017-10-11 2017-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 7,960 -5 -0.06 1,506 8.35 0.6762
2017-07-21 2017-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 7,965 -1,320 -14.22 1,390 -2.52 0.6515
2017-04-12 2017-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 9,285 30 0.32 1,426 9.19 0.6213
2017-01-10 2016-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 9,255 865 10.31 1,306 -2.17 0.5910
2016-10-18 2016-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 8,390 875 11.64 1,335 20.27 0.6528
2016-08-02 2016-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 7,515 6,520 655.28 1,110 655.10 0.5491
2016-05-11 2016-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 995 995 147 0.0700
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.