Thermo Fisher Scientific Inc.
MX ˙ BMV ˙ US8835561023
SecurityMX:TMO / Thermo Fisher Scientific Inc.
InstitutionGuardian Capital Lp
Latest Disclosed Ownership2,432 shares
Latest Disclosed Value $ 1,195,401
Guardian Capital Lp ownership in TMO / Thermo Fisher Scientific Inc.

On May 15, 2026 - Guardian Capital Lp filed a 13F-HR form disclosing ownership of 2,432 shares of Thermo Fisher Scientific Inc. (MX:TMO) valued at $1,195,401 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 18, 2026 disclosing 2,432 shares of Thermo Fisher Scientific Inc.. This represents a change in shares of 0.00% 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 2,432 0 0.00 1,195 -15.19 0.0208
2026-02-18 2025-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 2,432 2,432 1,409 0.0418
2024-08-13 2024-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 0 -3,198 -100.00 0 -100.00
2024-05-14 2024-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 3,198 0 0.00 1,859 9.49 0.0648
2024-02-08 2023-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 3,198 -264 -7.63 1,697 -3.14 0.0608
2023-11-13 2023-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 3,462 -1,444 -29.43 1,752 -31.54 0.0652
2023-08-14 2023-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 4,906 -3,768 -43.44 2,560 -48.81 0.0820
2023-05-15 2023-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 8,674 -750 -7.96 4,999 -3.66 0.1594
2023-02-14 2022-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 9,424 -192 -2.00 5,190 6.40 0.1709
2022-11-14 2022-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 9,616 692 7.75 4,877 0.60 0.1677
2022-08-12 2022-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 8,924 844 10.45 4,848 1.59 0.1483
2022-05-16 2022-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 8,080 600 8.02 4,772 -4.39 0.0928
2022-02-10 2021-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 7,480 125 1.70 4,991 18.78 0.0963
2021-11-15 2021-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 7,355 0 0.00 4,202 13.26 0.0869
2021-08-17 2021-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 7,355 630 9.37 3,710 20.89 0.0728
2021-05-17 2021-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 6,725 410 6.49 3,069 4.35 0.0514
2021-02-12 2020-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 6,315 145 2.35 2,941 7.97 0.0686
2020-11-16 2020-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 6,170 -95 -1.52 2,724 20.00 0.0716
2020-08-13 2020-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 6,265 1,990 46.55 2,270 87.29 0.0587
2020-05-15 2020-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 4,275 175 4.27 1,212 -9.01 0.0361
2020-02-13 2019-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 4,100 235 6.08 1,332 18.29 0.0277
2019-11-14 2019-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 3,865 215 5.89 1,126 5.04 0.0226
2019-08-14 2019-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 3,650 1,580 76.33 1,072 89.07 0.0209
2019-05-15 2019-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 2,070 -475 -18.66 567 85.29 0.0104
2014-05-14 2014-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 2,545 2,545 -88.36 306 -84.81 0.0047
2014-02-13 2013-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 0 -21,860 -100.00 0 -100.00
2013-11-06 2013-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 21,860 -320 -1.44 2,014 7.30 0.0329
2013-08-12 2013-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 22,180 22,180 1,877 0.0331
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.