Thermo Fisher Scientific Inc.
MX ˙ BMV ˙ US8835561023
SecurityMX:TMO / Thermo Fisher Scientific Inc.
InstitutionMontecito Bank & Trust
Latest Disclosed Ownership2,822 shares
Latest Disclosed Value $ 1,387,097
Montecito Bank & Trust reports 4.08% decrease in ownership of TMO / Thermo Fisher Scientific Inc.

On April 16, 2026 - Montecito Bank & Trust filed a 13F-HR form disclosing ownership of 2,822 shares of Thermo Fisher Scientific Inc. (MX:TMO) valued at $1,387,097 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 9, 2026 disclosing 2,942 shares of Thermo Fisher Scientific Inc.. This represents a change in shares of -4.08% 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)
2026-04-16 2026-03-31 13F THERMO FISHER SCIENTIFIC Equities 883556102 2,822 -120 -4.08 1,387 -18.60 0.2284
2026-01-09 2025-12-31 13F THERMO FISHER SCIENTIFIC Equities 883556102 2,942 -17 -0.57 1,705 18.75 0.2718
2025-10-07 2025-09-30 13F THERMO FISHER SCIENTIFIC Equities 883556102 2,959 -288 -8.87 1,435 -11.15 0.2229
2025-04-17 2025-03-31 13F THERMO FISHER SCIENTIFIC Equities 883556102 3,247 -250 -7.15 1,616 -11.21 0.2860
2025-01-21 2024-12-31 13F THERMO FISHER SCIENTIFIC Equities 883556102 3,497 -115 -3.18 1,819 -18.58 0.3151
2024-10-31 2024-09-30 13F THERMO FISHER SCIENTIFIC Equities 883556102 3,612 131 3.76 2,234 16.11 0.3806
2024-07-17 2024-06-30 13F THERMO FISHER SCIENTIFIC Com 883556102 3,481 -70 -1.97 1,925 -6.74 0.3916
2024-04-09 2024-03-31 13F THERMO FISHER SCIENTIFIC Com 883556102 3,551 -265 -6.94 2,064 1.88 0.4128
2024-01-05 2023-12-31 13F THERMO FISHER SCIENTIFIC Com 883556102 3,816 -248 -6.10 2,025 -1.56 0.4356
2023-10-16 2023-09-30 13F THERMO FISHER SCIENTIFIC Com 883556102 4,064 -282 -6.49 2,057 -9.26 0.4821
2023-07-25 2023-06-30 13F THERMO FISHER SCIENTIFIC Com 883556102 4,346 -215 -4.71 2,268 -13.74 0.5151
2023-04-25 2023-03-31 13F THERMO FISHER SCIENTIFIC Com 883556102 4,561 -6 -0.13 2,629 131,300.00 0.6269
2023-01-20 2022-12-31 13F THERMO FISHER SCIENTIFIC Com 883556102 4,567 -47 -1.02 3 -99.91 0.6097
2022-10-14 2022-09-30 13F THERMO FISHER SCIENTIFIC Com 883556102 4,614 80 1.76 2,340 -5.03 0.6090
2022-08-01 2022-06-30 13F THERMO FISHER SCIENTIFIC Com 883556102 4,534 -1,939 -29.96 2,464 -35.56 0.5849
2022-04-22 2022-03-31 13F THERMO FISHER SCIENTIFIC Com 883556102 6,473 63 0.98 3,824 -10.59 0.7155
2022-01-25 2021-12-31 13F THERMO FISHER SCIENTIFIC Com 883556102 6,410 31 0.49 4,277 17.37 0.7585
2021-10-28 2021-09-30 13F THERMO FISHER SCIENTIFIC Com 883556102 6,379 -311 -4.65 3,644 7.97 0.7081
2021-07-08 2021-06-30 13F THERMO FISHER SCIENTIFIC Com 883556102 6,690 -101 -1.49 3,375 8.91 0.6476
2021-04-26 2021-03-31 13F THERMO FISHER SCIENTIFIC Com 883556102 6,791 -848 -11.10 3,099 -12.90 0.6427
2021-01-28 2020-12-31 13F THERMO FISHER SCIENTIFIC Com 883556102 7,639 8 0.10 3,558 5.61 0.7801
2020-10-27 2020-09-30 13F THERMO FISHER SCIENTIFIC Com 883556102 7,631 -449 -5.56 3,369 15.10 0.8578
2020-07-17 2020-06-30 13F THERMO FISHER SCIENTIFIC Com 883556102 8,080 3,996 97.85 2,927 152.76 0.8033
2020-04-23 2020-03-31 13F THERMO FISHER SCIENTIFIC Com 883556102 4,084 271 7.11 1,158 -6.46 0.3793
2020-01-22 2019-12-31 13F THERMO FISHER SCIENTIFIC Com 883556102 3,813 111 3.00 1,238 14.84 0.3324
2019-10-18 2019-09-30 13F THERMO FISHER SCIENTIFIC Com 883556102 3,702 -1,697 -31.43 1,078 -32.03 0.3204
2019-07-05 2019-06-30 13F THERMO FISHER SCIENTIFIC Com 883556102 5,399 -119 -2.16 1,586 4.96 0.4791
2019-04-05 2019-03-31 13F THERMO FISHER SCIENTIFIC Com 883556102 5,518 -120 -2.13 1,511 19.73 0.4617
2019-02-05 2018-12-31 13F THERMO FISHER SCIENTIFIC Com 883556102 5,638 359 6.80 1,262 -2.09 0.4360
2018-10-11 2018-09-30 13F THERMO FISHER SCIENTIFIC Com 883556102 5,279 2,304 77.45 1,289 109.25 0.3847
2018-08-01 2018-06-30 13F THERMO FISHER SCIENTIFIC Com 883556102 2,975 20 0.68 616 0.98 0.1973
2018-04-23 2018-03-31 13F THERMO FISHER SCIENTIFIC Com 883556102 2,955 -240 -7.51 610 0.49 0.1998
2018-02-13 2017-12-31 13F/A-1 THERMO FISHER SCIENTIFIC Com 883556102 3,195 316 10.98 607 11.38 0.1974
2017-10-23 2017-09-30 13F THERMO FISHER SCIENTIFIC Common Stock 883556102 2,879 244 9.26 545 18.48 0.1888
2017-07-26 2017-06-30 13F THERMO FISHER SCIENTIFIC Com 883556102 2,635 -1,751 -39.92 460 -31.75 0.1655
2017-05-04 2017-03-31 13F THERMO FISHER SCIENTIFIC Com 883556102 4,386 297 7.26 674 16.81 0.2462
2017-02-15 2016-12-31 13F THERMO FISHER SCIENTIFIC Com 883556102 4,089 409 11.11 577 -1.37 0.2014
2016-11-03 2016-09-30 13F THERMO FISHER SCIENTIFIC Com 883556102 3,680 1,163 46.21 585 57.26 0.2405
2016-08-19 2016-06-30 13F THERMO FISHER SCIENTIFIC COMMON STOCK 883556102 2,517 276 12.32 372 17.35 0.1572
2016-05-05 2016-03-31 13F THERMO FISHER SCIENTIFIC COMMON STOCK 883556102 2,241 -250 -10.04 317 -10.20 0.1424
2016-01-25 2015-12-31 13F THERMO FISHER SCIENTIFIC COMMON STOCK 883556102 2,491 610 32.43 353 53.48 0.1665
2015-10-27 2015-09-30 13F THERMO FISHER SCIENTIFIC COMMON STOCK 883556102 1,881 1,881 230 0.1269
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.