Thermo Fisher Scientific Inc.
MX ˙ BMV ˙ US8835561023
SecurityMX:TMO / Thermo Fisher Scientific Inc.
InstitutionRKL Wealth Management LLC
Latest Disclosed Ownership11,206 shares
Latest Disclosed Value $ 5,507,865
RKL Wealth Management LLC reports 6.34% decrease in ownership of TMO / Thermo Fisher Scientific Inc.

On April 24, 2026 - RKL Wealth Management LLC filed a 13F-HR form disclosing ownership of 11,206 shares of Thermo Fisher Scientific Inc. (MX:TMO) valued at $5,507,865 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 11,965 shares of Thermo Fisher Scientific Inc.. This represents a change in shares of -6.34% 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.

Upgrade to unlock premium data and export to Excel .

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)
2026-04-24 2026-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 11,206 -759 -6.34 5,508 -20.57 0.4956
2026-02-12 2025-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 11,965 -240 -1.97 6,933 17.13 0.5691
2025-11-12 2025-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 12,205 -2,068 -14.49 5,919 2.28 0.5046
2025-07-18 2025-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 14,273 -597 -4.01 5,787 -21.79 0.5087
2025-04-28 2025-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 14,870 -143 -0.95 7,399 -5.26 0.6972
2025-02-07 2024-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 15,013 -123 -0.81 7,810 -16.58 0.6951
2024-11-01 2024-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 15,136 -155 -1.01 9,362 10.73 0.8472
2024-07-18 2024-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 15,291 -698 -4.37 8,456 -9.01 0.8150
2024-05-08 2024-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 15,989 -249 -1.53 9,293 7.81 0.9207
2024-01-25 2023-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 16,238 -218 -1.32 8,619 3.48 0.9319
2023-11-06 2023-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 16,456 -491 -2.90 8,329 -5.80 1.0190
2023-08-08 2023-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 16,947 -408 -2.35 8,842 -11.60 1.0463
2023-05-02 2023-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 17,355 -870 -4.77 10,003 -0.34 1.2632
2023-02-07 2022-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 18,225 -257 -1.39 10,037 7.06 1.3417
2022-11-14 2022-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 18,482 -367 -1.95 9,374 -8.46 1.3505
2022-08-01 2022-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 18,849 -123 -0.65 10,240 -8.62 1.4048
2022-05-10 2022-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 18,972 -160 -0.84 11,206 -12.22 1.3457
2022-02-08 2021-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 19,132 -476 -2.43 12,766 13.95 1.5159
2021-11-15 2021-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 19,608 -646 -3.19 11,203 9.64 1.4226
2021-08-13 2021-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 20,254 -189 -0.92 10,218 9.52 1.2869
2021-05-10 2021-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 20,443 -358 -1.72 9,330 -3.71 1.2498
2021-02-11 2020-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 20,801 -383 -1.81 9,689 3.59 1.3508
2020-11-09 2020-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 21,184 -106 -0.50 9,353 21.25 1.4888
2020-08-07 2020-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 21,290 -219 -1.02 7,714 26.46 1.3223
2020-04-28 2020-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 21,509 -340 -1.56 6,100 -14.06 1.2762
2020-02-04 2019-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 21,849 -492 -2.20 7,098 8.97 1.2731
2019-10-31 2019-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 22,341 -1,084 -4.63 6,514 -5.35 1.2388
2019-08-02 2019-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 23,425 -211 -0.89 6,882 6.40 1.2686
2019-04-26 2019-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 23,636 -843 -3.44 6,468 18.18 1.2662
2019-02-07 2018-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 24,479 -1,603 -6.15 5,473 -14.08 1.2629
2018-11-07 2018-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 26,082 -678 -2.53 6,370 15.09 1.3530
2018-08-03 2018-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 26,760 -1,884 -6.58 5,535 -6.31 1.2506
2018-04-25 2018-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 28,644 -2,806 -8.92 5,908 -1.12 1.3972
2018-02-02 2017-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 31,450 -2,993 -8.69 5,975 -8.39 1.4765
2017-12-14 2017-09-30 13F/A-1 THERMO FISHER SCIENTIFIC COM 883556102 34,443 -4,342 -11.20 6,522 -3.56 1.8322
2017-11-07 2017-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 34,443 -4,342 6,522
2017-08-14 2017-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 38,785 -6,026 -13.45 6,763 -1.73 2.1454
2017-05-09 2017-03-31 13F Thermo Fisher Scientific COM 883556102 44,811 -5,962 -11.74 6,882 -3.94 2.7688
2017-02-02 2016-12-31 13F Thermo Fisher Scientific COM 883556102 50,773 -3,418 -6.31 7,164 -16.89 3.4540
2016-10-21 2016-09-30 13F Thermo Fisher Scientific COM 883556102 54,191 -1,005 -1.82 8,620 2.64 4.3452
2016-07-25 2016-06-30 13F Thermo Fisher Scientific COM 883556102 55,196 -1,531 -2.70 8,398 4.56 4.3668
2016-04-26 2016-03-31 13F Thermo Fisher Scientific COM 883556102 56,727 -3,209 -5.35 8,032 -5.53 4.6122
2016-02-08 2015-12-31 13F Thermo Fisher Scientific COM 883556102 59,936 -1,548 -2.52 8,502 13.09 3.9440
2015-10-16 2015-09-30 13F Thermo Fisher Scientific COM 883556102 61,484 -3,394 -5.23 7,518 -10.70 4.7390
2015-07-28 2015-06-30 13F Thermo Fisher Scientific COM 883556102 64,878 -1,907 -2.86 8,419 -6.16 5.0487
2015-04-21 2015-03-31 13F Thermo Fisher Scientific COM 883556102 66,785 2,365 3.67 8,972 11.16 5.4316
2015-01-20 2014-12-31 13F Thermo Fisher Scientific COM 883556102 64,420 951 1.50 8,071 4.49 5.2601
2014-10-21 2014-09-30 13F Thermo Fisher Scientific COM 883556102 63,469 1,575 2.54 7,724 5.76 5.3919
2014-07-28 2014-06-30 13F Thermo Fisher Scientific COM 883556102 61,894 2,610 4.40 7,303 2.46 5.3463
2014-04-29 2014-03-31 13F Thermo Fisher Scientific COM 883556102 59,284 59,284 7,128 5.3940
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.