Thermo Fisher Scientific Inc.
MX ˙ BMV ˙ US8835561023
SecurityMX:TMO / Thermo Fisher Scientific Inc.
InstitutionGluskin Sheff & Assoc Inc
Latest Disclosed Ownership12,268 shares
Latest Disclosed Value $ 6,030,090
Gluskin Sheff & Assoc Inc reports 1.63% increase in ownership of TMO / Thermo Fisher Scientific Inc.

On May 15, 2026 - Gluskin Sheff & Assoc Inc filed a 13F-HR form disclosing ownership of 12,268 shares of Thermo Fisher Scientific Inc. (MX:TMO) valued at $6,030,090 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 12,071 shares of Thermo Fisher Scientific Inc.. This represents a change in shares of 1.63% 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 12,268 197 1.63 6,030 -13.78 1.0031
2026-02-13 2025-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 12,071 -476 -3.79 6,995 14.94 0.9708
2025-11-14 2025-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 12,547 97 0.78 6,086 20.57 0.7688
2025-08-14 2025-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 12,450 294 2.42 5,048 -16.55 0.6156
2025-05-15 2025-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 12,156 -35 -0.29 6,049 -4.64 0.7793
2025-02-14 2024-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 12,191 437 3.72 6,342 -12.76 0.7603
2024-11-14 2024-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 11,754 0 0.00 7,271 11.86 0.8507
2024-08-14 2024-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 11,754 80 0.69 6,500 -4.22 0.7406
2024-05-15 2024-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 11,674 -984 -7.77 6,785 1.00 0.6780
2024-02-14 2023-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 12,658 -3,854 -23.34 6,719 -19.61 0.6626
2023-11-14 2023-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 16,512 -1,345 -7.53 8,358 -10.29 0.6403
2023-08-14 2023-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 17,857 -2,695 -13.11 9,317 -21.35 0.5640
2023-05-15 2023-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 20,552 -2,391 -10.42 11,846 -6.25 0.6453
2023-02-14 2022-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 22,943 3,986 21.03 12,634 31.40 0.7091
2022-11-14 2022-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 18,957 905 5.01 9,615 -1.96 0.5736
2022-08-15 2022-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 18,052 -190 -1.04 9,807 -8.98 0.5354
2022-05-16 2022-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 18,242 -29 -0.16 10,775 -11.62 0.4690
2022-02-14 2021-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 18,271 175 0.97 12,191 17.91 0.4998
2021-11-12 2021-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 18,096 26 0.14 10,339 13.42 0.4324
2021-08-13 2021-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 18,070 62 0.34 9,116 10.93 0.4206
2021-05-14 2021-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 18,008 -55 -0.30 8,218 -2.32 0.3688
2021-02-16 2020-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 18,063 -221 -1.21 8,413 4.21 0.5769
2020-11-12 2020-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 18,284 -332 -1.78 8,073 19.67 0.5293
2020-08-11 2020-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 18,616 -2,671 -12.55 6,746 11.74 0.4495
2020-05-13 2020-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 21,287 272 1.29 6,037 -9.73 0.3997
2020-02-12 2019-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 21,015 -140 -0.66 6,688 8.54 0.3795
2019-11-08 2019-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 21,155 21,155 6,162 0.3853
2015-01-30 2014-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 0 -242,360 -100.00 0 -100.00
2014-10-22 2014-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 242,360 1,680 0.70 29,495 3.86 2.2053
2014-07-23 2014-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 240,680 17,090 7.64 28,400 5.64 1.9213
2014-04-30 2014-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 223,590 223,590 26,885 1.7224
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.