Thermo Fisher Scientific Inc.
CL ˙ SNSE ˙ US8835561023
SecurityCL:TMOCL / Thermo Fisher Scientific Inc.
InstitutionBanco Santander, S.A.
Latest Disclosed Ownership89,937 shares
Latest Disclosed Value $ 44,206,734
Banco Santander, S.A. reports 5.05% decrease in ownership of TMOCL / Thermo Fisher Scientific Inc.

On May 8, 2026 - Banco Santander, S.A. filed a 13F-HR form disclosing ownership of 89,937 shares of Thermo Fisher Scientific Inc. (CL:TMOCL) valued at $44,206,734 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 94,716 shares of Thermo Fisher Scientific Inc.. This represents a change in shares of -5.05% 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)
2026-05-08 2026-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 89,937 -4,779 -5.05 44,207 -19.45 0.3565
2026-02-13 2025-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 94,716 19,128 25.31 54,883 49.70 0.4110
2025-11-12 2025-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 75,588 -18,264 -19.46 36,662 -3.66 0.3255
2025-08-01 2025-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 93,852 6,566 7.52 38,053 -12.39 0.3613
2025-05-09 2025-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 87,286 10,714 13.99 43,434 9.03 0.4793
2025-02-07 2024-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 76,572 9,452 14.08 39,835 -4.05 0.4793
2024-11-12 2024-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 67,120 5,771 9.41 41,518 22.38 0.4893
2024-07-29 2024-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 61,349 15,398 33.51 33,926 27.03 0.4205
2024-05-10 2024-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 45,951 543 1.20 26,707 10.81 0.3220
2024-02-09 2023-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 45,408 24,036 112.46 24,102 122.82 0.2848
2023-11-08 2023-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 21,372 5,857 37.75 10,818 33.64 0.1534
2023-08-14 2023-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 15,515 665 4.48 8,095 -5.43 0.1062
2023-05-10 2023-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 14,850 1,370 10.16 8,559 15.30 0.1281
2023-02-13 2022-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 13,480 -1,150 -7.86 7,423 0.04 0.1115
2022-11-08 2022-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 14,630 -730 -4.75 7,420 -11.08 0.0990
2022-07-28 2022-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 15,360 80 0.52 8,345 -7.53 0.1112
2022-05-09 2022-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 15,280 882 6.13 9,025 -6.06 0.0969
2022-02-09 2021-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 14,398 1,716 13.53 9,607 32.58 0.0518
2021-11-08 2021-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 12,682 -2,657 -17.32 7,246 -6.36 0.0389
2021-07-29 2021-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 15,339 781 5.36 7,738 16.47 0.0432
2021-05-10 2021-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 14,558 444 3.15 6,644 1.06 0.0468
2021-02-12 2020-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 14,114 8,963 174.01 6,574 189.09 0.0471
2020-11-09 2020-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 5,151 -1,540 -23.02 2,274 -6.19 0.0299
2020-08-05 2020-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 6,691 -106 -1.56 2,424 25.73 0.0314
2020-05-11 2020-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 6,797 -236 -3.36 1,928 -15.62 0.0221
2020-02-07 2019-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 7,033 -1,980 -21.97 2,285 -13.32 0.0211
2019-11-06 2019-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 9,013 -28,255 -75.82 2,636 -75.92 0.0256
2019-08-07 2019-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 37,268 2,565 7.39 10,945 14.19 0.1111
2019-05-13 2019-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 34,703 9,520 37.80 9,585 70.07 0.1082
2019-02-12 2018-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 25,183 0 0.00 5,636 -8.31 0.0712
2018-11-13 2018-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 25,183 24,194 2,446.31 6,147 2,898.54 0.0701
2018-08-14 2018-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 989 0 0.00 205 0.49 0.0024
2018-05-14 2018-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 989 989 204 0.0024
2018-02-14 2017-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 0 -80,000 -100.00 0 -100.00
2017-11-13 2017-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 80,000 80,000 15,136 0.2496
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.