Thermo Fisher Scientific Inc.
MX ˙ BMV ˙ US8835561023
SecurityMX:TMO / Thermo Fisher Scientific Inc.
InstitutionPark Avenue Securities Llc
Latest Disclosed Ownership11,519 shares
Latest Disclosed Value $ 5,662
Park Avenue Securities Llc reports 1.21% increase in ownership of TMO / Thermo Fisher Scientific Inc.

On April 7, 2026 - Park Avenue Securities Llc filed a 13F-HR form disclosing ownership of 11,519 shares of Thermo Fisher Scientific Inc. (MX:TMO) valued at $5,662 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 5, 2026 disclosing 11,381 shares of Thermo Fisher Scientific Inc.. This represents a change in shares of 1.21% 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)
2026-04-07 2026-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 11,519 138 1.21 6 -16.67 0.0442
2026-01-05 2025-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 11,381 -126 -1.09 7 20.00 0.0559
2025-10-23 2025-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 11,507 -419 -3.51 6 25.00 0.0436
2025-07-14 2025-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 11,926 -3,405 -22.21 5 -42.86 0.0445
2025-04-14 2025-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 15,331 -1,542 -9.14 8 -12.50 0.0938
2025-01-14 2024-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 16,873 -1,293 -7.12 9 -27.27 0.0903
2024-10-03 2024-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 18,166 -1,063 -5.53 11 10.00 0.1263
2024-07-09 2024-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 19,229 13 0.07 11 -9.09 0.1300
2024-04-10 2024-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 19,216 1,791 10.28 11 22.22 0.1443
2024-01-10 2023-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 17,425 -80 -0.46 9 12.50 0.1277
2023-10-26 2023-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 17,505 -976 -5.28 9 -11.11 0.1374
2023-07-14 2023-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 18,481 344 1.90 10 -10.00 0.1527
2023-04-18 2023-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 18,137 -735 -3.89 10 -99.90 0.1798
2023-01-24 2022-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 18,872 114 0.61 10,392 9.23 0.1845
2022-11-01 2022-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 18,758 1,298 7.43 9,514 0.31 0.1897
2022-07-27 2022-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 17,460 873 5.26 9,485 -3.18 0.1838
2022-04-29 2022-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 16,587 645 4.05 9,797 -7.90 0.1719
2022-04-08 2021-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 15,942 797 5.26 10,637 22.93 0.1879
2021-10-21 2021-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 15,145 718 4.98 8,653 18.89 0.1737
2021-08-05 2021-06-30 13F/A-1 THERMO FISHER SCIENTIFIC COM 883556102 14,427 755 5.52 7,278 16.63 0.1544
2021-07-26 2021-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 13,672 0 6,240 0.1514
2021-04-28 2021-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 13,672 1,410 11.50 6,240 9.26 0.1514
2021-01-20 2020-12-31 13F THERMO FISHER SCIENTIFIC I NC COM 883556102 12,262 -1,261 -9.32 5,711 -4.35 0.1586
2020-11-03 2020-09-30 13F THERMO FISHER SCIENTIFIC I COM 883556102 13,523 1,065 8.55 5,971 32.28 0.1999
2020-07-30 2020-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 12,458 12,458 4,514 0.1709
2020-04-28 2020-03-31 13F THERMO FISHER SCIENTIFIC INC COM COM 883556102 0 -9,715 -100.00 0 -100.00
2020-02-04 2019-12-31 13F THERMO FISHER SCIENTIFIC INC COM COM 883556102 9,715 289 3.07 3,156 14.93 0.1304
2019-10-18 2019-09-30 13F THERMO FISHER SCIENTIFIC INC COM COM 883556102 9,426 9,426 2,746 0.1298
2019-07-26 2019-06-30 13F THERMO FISHER SCIENTIFIC INC COM COM 883556102 0 -7,562 -100.00 0 -100.00
2019-05-02 2019-03-31 13F THERMO FISHER SCIENTIFIC INC COM COM 883556102 7,562 7,562 2,089 0.1146
2017-11-08 2017-09-30 13F THERMO FISHER SCIENTIFIC INC COM COM 883556102 0 -2,709 -100.00 0 -100.00
2017-07-26 2017-06-30 13F THERMO FISHER SCIENTIFIC INC COM COM 883556102 2,709 2,709 480 0.0524
2016-10-26 2016-09-30 13F THERMO FISHER SCIENTIFIC INC COM Com 883556102 0 -1,904 -100.00 0 -100.00
2016-07-27 2016-06-30 13F THERMO FISHER SCIENTIFIC INC COM Com 883556102 1,904 1,904 284 0.0486
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.