Thermo Fisher Scientific Inc.
US ˙ NYSE ˙ US8835561023

SecurityTMO / Thermo Fisher Scientific Inc.
InstitutionBokf, Na
Latest Disclosed Ownership17,231 shares
Latest Disclosed Value $ 8,469,554
Bokf, Na reports 1.18% decrease in ownership of TMO / Thermo Fisher Scientific Inc.

On May 8, 2026 - Bokf, Na filed a 13F-HR form disclosing ownership of 17,231 shares of Thermo Fisher Scientific Inc. (US:TMO) valued at $8,469,553 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 3, 2026 disclosing 17,437 shares of Thermo Fisher Scientific Inc.. This represents a change in shares of -1.18% during the quarter. The current value of the position is $8,166,632 USD.

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 common 883556102 17,231 -206 -1.18 8,470 -16.17 0.0997
2026-02-03 2025-12-31 13F THERMO FISHER SCIENTIFIC common 883556102 17,437 -6,133 -26.02 10,104 -11.62 0.1546
2025-11-13 2025-09-30 13F THERMO FISHER SCIENTIFIC common 883556102 23,570 -2,840 -10.75 11,432 6.75 0.1720
2025-08-12 2025-06-30 13F THERMO FISHER SCIENTIFIC common 883556102 26,410 -2,238 -7.81 10,708 -24.88 0.1734
2025-05-13 2025-03-31 13F THERMO FISHER SCIENTIFIC common 883556102 28,648 -756 -2.57 14,255 -10.60 0.2521
2025-02-14 2024-12-31 13F THERMO FISHER SCIENTIFIC common 883556102 29,404 -2,683 -8.36 15,946 -17.30 0.2694
2024-11-14 2024-09-30 13F THERMO FISHER SCIENTIFIC common 883556102 32,087 2,224 7.45 19,282 16.76 0.3421
2024-08-08 2024-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 29,863 -8,034 -21.20 16,514 -24.54 0.2964
2024-05-15 2024-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 37,897 -1,417 -3.60 21,884 4.87 0.3984
2024-02-14 2023-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 39,314 -1,326 -3.26 20,867 15.45 0.4086
2023-11-14 2023-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 40,640 -5,803 -12.49 18,075 -25.41 0.3984
2023-08-21 2023-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 46,443 1,809 4.05 24,232 -5.81 0.4935
2023-05-11 2023-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 44,634 -7,041 -13.63 25,726 -9.60 0.5383
2023-02-13 2022-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 51,675 -4,490 -7.99 28,457 -0.10 0.5252
2022-11-14 2022-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 56,165 1,158 2.11 28,486 -4.68 0.5764
2022-08-11 2022-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 55,007 618 1.14 29,885 -6.97 0.5729
2022-05-13 2022-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 54,389 131 0.24 32,125 -11.27 0.5294
2022-03-11 2021-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 54,258 1,748 3.33 36,204 20.68 0.5602
2021-11-10 2021-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 52,510 20,107 62.05 30,001 102.86 0.5159
2021-04-21 2021-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 32,403 -2,980 -8.42 14,789 -10.27 0.2690
2021-02-12 2020-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 35,383 5,127 16.95 16,481 23.37 0.3145
2020-10-30 2020-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 30,256 -161 -0.53 13,359 21.21 0.2935
2020-08-12 2020-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 30,417 3,535 13.15 11,021 44.56 0.2592
2020-05-13 2020-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 26,882 -1,913 -6.64 7,624 -18.50 0.2197
2020-02-12 2019-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 28,795 96 0.33 9,355 11.92 0.2114
2019-11-13 2019-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 28,699 -5,380 -15.79 8,359 -16.48 0.2013
2019-08-14 2019-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 34,079 4,448 15.01 10,008 23.40 0.2404
2019-05-15 2019-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 29,631 -1,046 -3.41 8,110 18.14 0.1941
2019-02-13 2018-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 30,677 -1,786 -5.50 6,865 -13.36 0.1964
2018-11-13 2018-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 32,463 -2,533 -7.24 7,924 9.31 0.1989
2018-08-13 2018-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 34,996 -117 -0.33 7,249 0.00 0.1951
2018-05-14 2018-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 35,113 5,383 18.11 7,249 28.41 0.2059
2018-02-14 2017-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 29,730 -676 -2.22 5,645 -1.86 0.1555
2017-11-14 2017-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 30,406 3,479 12.92 5,752 22.44 0.1670
2017-08-14 2017-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 26,927 -2,932 -9.82 4,698 2.44 0.1478
2017-05-15 2017-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 29,859 3,865 14.87 4,586 25.03 0.1431
2017-02-14 2016-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 25,994 -909 -3.38 3,668 -14.28 0.1207
2016-11-10 2016-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 26,903 -3,847 -12.51 4,279 -5.81 0.1416
2016-08-12 2016-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 30,750 -12,146 -28.31 4,543 -25.19 0.1601
2016-05-13 2016-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 42,896 1,071 2.56 6,073 2.38 0.2195
2016-02-09 2015-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 41,825 2,885 7.41 5,932 24.57 0.2145
2015-11-13 2015-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 38,940 3,533 9.98 4,762 3.66 0.1792
2015-08-13 2015-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 35,407 -1,595 -4.31 4,594 -7.58 0.1560
2015-05-14 2015-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 37,002 4,727 14.65 4,971 22.92 0.1673
2015-02-12 2014-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 32,275 -12,659 -28.17 4,044 -26.04 0.1396
2014-11-13 2014-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 44,934 -2,242 -4.75 5,468 -1.76 0.1828
2014-08-14 2014-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 47,176 435 0.93 5,566 -0.96 0.1786
2014-05-14 2014-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 46,741 -543 -1.15 5,620 6.74 0.1863
2014-02-14 2013-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 47,284 823 1.77 5,265 22.96 0.1764
2013-11-12 2013-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 46,461 1,828 4.10 4,282 13.37 0.1555
2013-08-14 2013-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 44,633 44,633 3,777 0.1427
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.