써모 피셔 사이언티픽(주)
MX ˙ BMV ˙ US8835561023
SecurityMX:TMO / Thermo Fisher Scientific Inc.
InstitutionJennison Associates Llc
Latest Disclosed Ownership238,402 shares
Latest Disclosed Value $ 117,181,736
Jennison Associates Llc reports 13.97% decrease in ownership of TMO / Thermo Fisher Scientific Inc.

On May 6, 2026 - Jennison Associates Llc filed a 13F-HR form disclosing ownership of 238,402 shares of Thermo Fisher Scientific Inc. (MX:TMO) valued at $117,181,736 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 30, 2026 disclosing 277,111 shares of Thermo Fisher Scientific Inc.. This represents a change in shares of -13.97% 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)
2026-05-06 2026-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 238,402 -38,709 -13.97 117,182 -27.02 0.0432
2026-01-30 2025-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 277,111 25,644 10.20 160,572 31.65 0.0964
2025-10-30 2025-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 251,467 85,475 51.49 121,967 81.22 0.0710
2025-08-01 2025-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 165,992 165,992 67,303 0.0399
2024-11-08 2024-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 0 -84,071 -100.00 0 -100.00
2024-08-05 2024-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 84,071 535 0.64 46,491 -4.24 0.0298
2024-05-02 2024-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 83,536 51 0.06 48,552 9.56 0.0325
2024-02-01 2023-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 83,485 564 0.68 44,313 5.58 0.0330
2023-10-31 2023-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 82,921 -33,393 -28.71 41,972 -30.84 0.0356
2023-08-03 2023-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 116,314 -1,589,185 -93.18 60,687 -93.83 0.0498
2023-04-26 2023-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 1,705,499 516,520 43.44 982,998 50.13 0.9016
2023-02-09 2022-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 1,188,979 400,867 50.86 654,759 63.80 0.6635
2022-11-01 2022-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 788,112 136,885 21.02 399,723 12.98 0.3975
2022-08-02 2022-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 651,227 525,014 415.97 353,799 374.59 0.3531
2022-05-11 2022-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 126,213 -20,808 -14.15 74,548 -24.01 0.0549
2022-02-08 2021-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 147,021 -110,033 -42.81 98,098 -33.20 0.0622
2021-11-09 2021-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 257,054 112,157 77.40 146,863 100.92 0.0950
2021-08-12 2021-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 144,897 127,702 742.67 73,096 831.52 0.0484
2021-05-11 2021-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 17,195 -87,514 -83.58 7,847 -83.91 0.0057
2021-02-05 2020-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 104,709 36,937 54.50 48,771 62.99 0.0348
2020-11-04 2020-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 67,772 66,551 5,450.53 29,923 6,669.91 0.0241
2020-08-06 2020-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 1,221 -59 -4.61 442 21.76 0.0004
2020-05-06 2020-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 1,280 -693,276 -99.82 363 -99.84 0.0004
2020-02-07 2019-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 694,556 -158,084 -18.54 225,640 -9.14 0.2276
2019-11-08 2019-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 852,640 33,502 4.09 248,348 3.24 0.2623
2019-08-06 2019-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 819,138 788,686 2,589.93 240,564 2,786.19 0.2406
2019-05-10 2019-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 30,452 -84,728 -73.56 8,335 -67.66 0.0083
2019-02-06 2018-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 115,180 -43,544 -27.43 25,776 -33.47 0.0288
2018-11-08 2018-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 158,724 -3,964 -2.44 38,741 14.96 0.0357
2018-08-02 2018-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 162,688 17,497 12.05 33,699 12.42 0.0329
2018-04-20 2018-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 145,191 -27,021 -15.69 29,976 -8.33 0.0298
2018-01-25 2017-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 172,212 -1,498 -0.86 32,700 -0.51 0.0323
2017-11-03 2017-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 173,710 -59,008 -25.36 32,866 -19.05 0.0337
2017-08-04 2017-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 232,718 476 0.20 40,602 13.82 0.0431
2017-08-02 2017-03-31 13F/A-1 THERMO FISHER SCIENTIFIC COM 883556102 232,242 -51,072 -18.03 35,672 -10.77 0.0383
2017-04-28 2017-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 232,242 -51,072 35,672
2017-08-02 2016-12-31 13F/A-1 THERMO FISHER SCIENTIFIC COM 883556102 283,314 -6,388 -2.21 39,976 -13.25 0.0446
2017-02-06 2016-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 283,314 39,976
2016-11-01 2016-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 289,702 -969 -0.33 46,080 7.29 0.0497
2016-08-03 2016-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 290,671 -8,148 -2.73 42,950 1.51 0.0471
2016-05-03 2016-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 298,819 12,154 4.24 42,310 4.05 0.0444
2016-02-10 2015-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 286,665 -176,140 -38.06 40,663 -28.15 0.0399
2015-11-06 2015-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 462,805 -151,357 -24.64 56,592 -28.99 0.0602
2015-08-03 2015-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 614,162 55,528 9.94 79,694 6.19 0.0731
2015-06-25 2015-03-31 13F/A-1 THERMO FISHER SCIENTIFIC COM 883556102 558,634 1,974 0.35 75,047 7.60 0.0688
2015-05-04 2015-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 558,634 75,047
2015-06-25 2014-12-31 13F/A-1 THERMO FISHER SCIENTIFIC COM 883556102 556,660 -163,496 -22.70 69,744 -20.42 0.0652
2015-02-06 2014-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 556,660 -163,496 69,744 0.0652
2014-11-12 2014-09-30 13F/A-1 THERMO FISHER SCIENTIFIC COM 883556102 720,156 2,801 0.39 87,643 3.54 0.0813
2014-11-05 2014-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 720,156 2,801 87,643 0.0835
2014-08-08 2014-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 717,355 26,150 3.78 84,648 1.85 0.0778
2014-05-07 2014-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 691,205 686 0.10 83,110 8.09 0.0795
2014-02-10 2013-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 690,519 0 0.00 76,889 20.84 0.0754
2013-11-13 2013-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 690,519 49,638 7.75 63,631 17.32 0.0667
2013-08-05 2013-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 640,881 640,881 54,238 0.0610
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.