써모 피셔 사이언티픽(주)
MX ˙ BMV ˙ US8835561023
SecurityMX:TMO / Thermo Fisher Scientific Inc.
InstitutionWoodstock Corp
Latest Disclosed Ownership14,525 shares
Latest Disclosed Value $ 7,139,473
Woodstock Corp reports 1.91% increase in ownership of TMO / Thermo Fisher Scientific Inc.

On April 8, 2026 - Woodstock Corp filed a 13F-HR form disclosing ownership of 14,525 shares of Thermo Fisher Scientific Inc. (MX:TMO) valued at $7,139,473 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 14, 2026 disclosing 14,253 shares of Thermo Fisher Scientific Inc.. This represents a change in shares of 1.91% 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)
2026-04-08 2026-03-31 13F Thermo Fisher Scientific COMMON STOCK 883556102 14,525 272 1.91 7,139 -13.55 0.6355
2026-01-14 2025-12-31 13F Thermo Fisher Scientific COMMON STOCK 883556102 14,253 28 0.20 8,259 19.70 0.7088
2025-10-07 2025-09-30 13F Thermo Fisher Scientific COMMON STOCK 883556102 14,225 -46 -0.32 6,899 19.24 0.5979
2025-07-09 2025-06-30 13F Thermo Fisher Scientific COMMON STOCK 883556102 14,271 -443 -3.01 5,786 -20.97 0.5318
2025-04-09 2025-03-31 13F Thermo Fisher Scientific COMMON STOCK 883556102 14,714 -1,049 -6.65 7,322 -10.72 0.7233
2025-01-15 2024-12-31 13F Thermo Fisher Scientific COMMON STOCK 883556102 15,763 72 0.46 8,200 -15.51 0.7900
2024-10-11 2024-09-30 13F Thermo Fisher Scientific COMMON STOCK 883556102 15,691 328 2.13 9,706 14.24 0.9339
2024-07-08 2024-06-30 13F Thermo Fisher Scientific COMMON STOCK 883556102 15,363 -13 -0.08 8,496 -4.94 0.8639
2024-04-09 2024-03-31 13F Thermo Fisher Scientific COMMON STOCK 883556102 15,376 16 0.10 8,937 9.62 0.9251
2024-01-08 2023-12-31 13F Thermo Fisher Scientific COMMON STOCK 883556102 15,360 28 0.18 8,153 5.05 0.9441
2023-10-10 2023-09-30 13F Thermo Fisher Scientific COMMON STOCK 883556102 15,332 2 0.01 7,761 -2.98 0.9732
2023-07-07 2023-06-30 13F Thermo Fisher Scientific COMMON STOCK 883556102 15,330 -5 -0.03 7,998 -9.50 0.9438
2023-04-06 2023-03-31 13F Thermo Fisher Scientific COMMON STOCK 883556102 15,335 25 0.16 8,839 4.83 1.1272
2023-01-10 2022-12-31 13F Thermo Fisher Scientific COMMON STOCK 883556102 15,310 77 0.51 8,431 9.13 1.1205
2022-10-11 2022-09-30 13F Thermo Fisher Scientific COMMON STOCK 883556102 15,233 392 2.64 7,726 -4.18 1.1494
2022-07-11 2022-06-30 13F Thermo Fisher Scientific COMMON STOCK 883556102 14,841 -1,127 -7.06 8,063 -14.51 1.1191
2022-04-07 2022-03-31 13F Thermo Fisher Scientific COMMON STOCK 883556102 15,968 -779 -4.65 9,431 -15.60 1.1044
2022-01-07 2021-12-31 13F Thermo Fisher Scientific COMMON STOCK 883556102 16,747 -291 -1.71 11,174 14.79 1.1700
2021-10-05 2021-09-30 13F Thermo Fisher Scientific COMMON STOCK 883556102 17,038 -122 -0.71 9,734 12.44 1.1352
2021-07-06 2021-06-30 13F Thermo Fisher Scientific COMMON STOCK 883556102 17,160 51 0.30 8,657 10.87 1.0186
2021-04-05 2021-03-31 13F Thermo Fisher Scientific COMMON STOCK 883556102 17,109 85 0.50 7,808 -1.53 0.9926
2021-01-06 2020-12-31 13F Thermo Fisher Scientific COMMON STOCK 883556102 17,024 1,233 7.81 7,929 13.73 1.0613
2020-10-02 2020-09-30 13F Thermo Fisher Scientific COMMON STOCK 883556102 15,791 -755 -4.56 6,972 16.30 1.1259
2020-07-07 2020-06-30 13F Thermo Fisher Scientific COMMON STOCK 883556102 16,546 -409 -2.41 5,995 24.69 1.0220
2020-04-03 2020-03-31 13F Thermo Fisher Scientific COMMON STOCK 883556102 16,955 -860 -4.83 4,808 -16.93 0.9797
2020-01-13 2019-12-31 13F Thermo Fisher Scientific COMMON STOCK 883556102 17,815 440 2.53 5,788 14.36 0.9427
2019-10-02 2019-09-30 13F Thermo Fisher Scientific COMMON STOCK 883556102 17,375 -65 -0.37 5,061 -1.19 0.8818
2019-07-03 2019-06-30 13F Thermo Fisher Scientific COMMON STOCK 883556102 17,440 0 0.00 5,122 7.29 0.8942
2019-04-05 2019-03-31 13F Thermo Fisher Scientific COMMON STOCK 883556102 17,440 0 0.00 4,774 22.32 0.8553
2019-01-08 2018-12-31 13F Thermo Fisher Scientific COMMON STOCK 883556102 17,440 -100 -0.57 3,903 -8.83 0.7832
2018-10-03 2018-09-30 13F Thermo Fisher Scientific COMMON STOCK 883556102 17,540 -220 -1.24 4,281 16.36 0.7236
2018-07-23 2018-06-30 13F Thermo Fisher Scientific COMMON STOCK 883556102 17,760 -25 -0.14 3,679 0.19 0.6773
2018-04-19 2018-03-31 13F Thermo Fisher Scientific COMMON STOCK 883556102 17,785 1,115 6.69 3,672 16.02 0.6943
2018-01-24 2017-12-31 13F Thermo Fisher Scientific COMMON STOCK 883556102 16,670 450 2.77 3,165 3.13 0.5837
2017-10-06 2017-09-30 13F Thermo Fisher Scientific COMMON STOCK 883556102 16,220 -50 -0.31 3,069 8.10 0.5850
2017-07-13 2017-06-30 13F Thermo Fisher Scientific COMMON STOCK 883556102 16,270 -125 -0.76 2,839 12.75 0.5565
2017-04-05 2017-03-31 13F Thermo Fisher Scientific COMMON STOCK 883556102 16,395 0 0.00 2,518 8.86 0.5075
2017-01-05 2016-12-31 13F Thermo Fisher Scientific COMMON STOCK 883556102 16,395 -775 -4.51 2,313 -15.31 0.4689
2016-10-06 2016-09-30 13F Thermo Fisher Scientific COMMON STOCK 883556102 17,170 -15 -0.09 2,731 7.56 0.5588
2016-08-03 2016-06-30 13F Thermo Fisher Scientific COMMON STOCK 883556102 17,185 375 2.23 2,539 6.68 0.5241
2016-05-10 2016-03-31 13F Thermo Fisher Scientific COMMON STOCK 883556102 16,810 0 0.00 2,380 -0.17 0.5007
2016-01-11 2015-12-31 13F THERMO FISHER SCIENTIFIC COMMON STOCK 883556102 16,810 0 0.00 2,384 15.95 0.5242
2015-10-16 2015-09-30 13F THERMO FISHER SCIENTIFIC COMMON STOCK 883556102 16,810 15,010 833.89 2,056 778.63 0.4681
2015-07-07 2015-06-30 13F THERMO FISHER SCIENTIFIC COMMON STOCK 883556102 1,800 -175 -8.86 234 -11.70 0.0441
2015-04-09 2015-03-31 13F THERMO FISHER SCIENTIFIC COMMON STOCK 883556102 1,975 1,975 265 0.0492
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.