Thermo Fisher Scientific Inc.
US ˙ NYSE ˙ US8835561023

SecurityTMO / Thermo Fisher Scientific Inc.
InstitutionWealth Architects, LLC
Latest Disclosed Ownership1,116 shares
Latest Disclosed Value $ 548,344
Wealth Architects, LLC reports 0.98% decrease in ownership of TMO / Thermo Fisher Scientific Inc.

On May 15, 2026 - Wealth Architects, LLC filed a 13F-HR form disclosing ownership of 1,116 shares of Thermo Fisher Scientific Inc. (US:TMO) valued at $548,547 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 1,127 shares of Thermo Fisher Scientific Inc.. This represents a change in shares of -0.98% during the quarter. The current value of the position is $528,928 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)
2026-05-15 2026-03-31 13F THERMO FISHER SCIENTIFIC Equities 883556102 1,116 -11 -0.98 548 -15.95 0.0489
2026-02-17 2025-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 1,127 -75 -6.24 653 11.84 0.0588
2025-11-13 2025-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 1,202 -8 -0.66 583 18.98 0.0551
2025-07-25 2025-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 1,210 -189 -13.51 491 -29.60 0.0499
2025-05-14 2025-03-31 13F/A-1 THERMO FISHER SCIENTIFIC COM 883556102 1,399 159 12.82 696 8.07 0.0768
2025-05-12 2025-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 6,902 5,662 1,057 0.1167
2025-02-10 2024-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 1,240 -106 -7.88 645 -22.60 0.0728
2024-10-31 2024-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 1,346 -12 -0.88 832 10.93 0.0942
2024-08-08 2024-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 1,358 -312 -18.68 751 -22.68 0.0917
2024-05-13 2024-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 1,670 -66 -3.80 971 5.32 0.1279
2024-02-14 2023-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 1,736 -83 -4.56 921 0.11 0.1292
2023-11-09 2023-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 1,819 16 0.89 921 -2.13 0.1566
2023-08-02 2023-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 1,803 -24 -1.31 941 -10.73 0.1552
2023-04-21 2023-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 1,827 -1 -0.05 1,053 4.67 0.1865
2023-02-10 2022-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 1,828 -54 -2.87 1,007 5.34 0.1904
2022-10-24 2022-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 1,882 139 7.97 955 0.84 0.1999
2022-07-29 2022-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 1,743 1 0.06 947 -7.97 0.1850
2022-05-17 2022-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 1,742 -68 -3.76 1,029 -14.82 0.1749
2022-01-19 2021-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 1,810 226 14.27 1,208 33.48 0.2118
2021-11-09 2021-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 1,584 2 0.13 905 13.41 0.1757
2021-08-09 2021-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 1,582 125 8.58 798 20.00 0.1564
2021-04-29 2021-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 1,457 29 2.03 665 0.00 0.1440
2021-01-28 2020-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 1,428 -70 -4.67 665 0.61 0.1547
2020-11-09 2020-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 1,498 -32 -2.09 661 19.31 0.1793
2020-08-14 2020-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 1,530 20 1.32 554 29.44 0.1554
2020-04-23 2020-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 1,510 -13 -0.85 428 -13.54 0.1485
2020-01-28 2019-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 1,523 45 3.04 495 15.12 0.1382
2019-10-23 2019-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 1,478 -93 -5.92 430 -6.72 0.1309
2019-07-12 2019-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 1,571 59 3.90 461 11.35 0.1389
2019-05-01 2019-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 1,512 153 11.26 414 36.18 0.1291
2019-01-17 2018-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 1,359 -5 -0.37 304 -8.71 0.1092
2018-10-04 2018-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 1,364 -13 -0.94 333 16.84 0.1028
2018-07-19 2018-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 1,377 0 0.00 285 0.35 0.0923
2018-04-13 2018-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 1,377 0 0.00 284 8.81 0.0941
2018-04-13 2017-12-31 13F/A-1 THERMO FISHER SCIENTIFIC COM 883556102 1,377 -428 -23.71 261 -23.68 0.0856
2018-01-30 2017-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 1,377 -428 261 0.0854
2017-11-08 2017-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 1,805 0 0.00 342 8.92 0.1189
2017-08-10 2017-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 1,805 0 0.00 314 13.36 0.1169
2017-05-02 2017-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 1,805 0 0.00 277 8.63 0.1101
2017-02-09 2016-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 1,805 0 0.00 255 -11.15 0.1135
2016-11-07 2016-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 1,805 0 0.00 287 7.89 0.1328
2016-08-08 2016-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 1,805 -17 -0.93 266 3.10 0.1288
2016-05-12 2016-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 1,822 -4 -0.22 258 -0.39 0.1288
2016-02-11 2015-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 1,826 0 0.00 259 16.14 0.1280
2015-11-10 2015-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 1,826 23 1.28 223 -4.70 0.1197
2015-08-06 2015-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 1,803 1,803 234 0.1258
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.