Thermo Fisher Scientific Inc.
CL ˙ SNSE ˙ US8835561023
SecurityCL:TMOCL / Thermo Fisher Scientific Inc.
InstitutionAviva Plc
Latest Disclosed Ownership384,002 shares
Latest Disclosed Value $ 188,748,503
Aviva Plc reports 5.46% decrease in ownership of TMOCL / Thermo Fisher Scientific Inc.

On May 14, 2026 - Aviva Plc filed a 13F-HR form disclosing ownership of 384,002 shares of Thermo Fisher Scientific Inc. (CL:TMOCL) valued at $188,748,503 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 406,165 shares of Thermo Fisher Scientific Inc.. This represents a change in shares of -5.46% 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)
2026-05-14 2026-03-31 13F THERMO FISHER SCIENTIFIC I COM 883556102 384,002 -22,163 -5.46 188,749 -19.80 0.3167
2026-02-12 2025-12-31 13F THERMO FISHER SCIENTIFIC I COM 883556102 406,165 -15,042 -3.57 235,352 15.20 0.3969
2025-11-13 2025-09-30 13F THERMO FISHER SCIENTIFIC I COM 883556102 421,207 -4,895 -1.15 204,294 18.25 0.3713
2025-08-07 2025-06-30 13F THERMO FISHER SCIENTIFIC I COM 883556102 426,102 157,889 58.87 172,767 29.45 0.3568
2025-05-15 2025-03-31 13F THERMO FISHER SCIENTIFIC I COM 883556102 268,213 25,951 10.71 133,463 5.90 0.3220
2025-02-13 2024-12-31 13F THERMO FISHER SCIENTIFIC I COM 883556102 242,262 -54,873 -18.47 126,032 -31.43 0.3273
2024-11-14 2024-09-30 13F THERMO FISHER SCIENTIFIC I COM 883556102 297,135 -57 -0.02 183,799 11.84 0.4762
2024-08-02 2024-06-30 13F THERMO FISHER SCIENTIFIC I COM 883556102 297,192 28,430 10.58 164,347 5.21 0.4556
2024-05-14 2024-03-31 13F THERMO FISHER SCIENTIFIC I COM 883556102 268,762 -5,419 -1.98 156,207 7.34 0.5143
2024-02-09 2023-12-31 13F THERMO FISHER SCIENTIFIC I COM 883556102 274,181 -18,762 -6.40 145,533 -1.85 0.5217
2023-11-13 2023-09-30 13F THERMO FISHER SCIENTIFIC I COM 883556102 292,943 -39,431 -11.86 148,279 -14.50 0.6236
2023-08-10 2023-06-30 13F THERMO FISHER SCIENTIFIC I COM 883556102 332,374 119,428 56.08 173,416 41.29 0.7062
2023-05-12 2023-03-31 13F THERMO FISHER SCIENTIFIC I COM 883556102 212,946 -19,830 -8.52 122,736 -4.25 0.5557
2023-02-14 2022-12-31 13F/A-2 THERMO FISHER SCIENTIFIC I COM 883556102 232,776 35,603 18.06 128,187 28.18 0.6304
2023-02-10 2022-12-31 13F/A-1 THERMO FISHER SCIENTIFIC I COM 883556102 232,776 35,603 45,757 0.2182
2023-02-09 2022-12-31 13F THERMO FISHER SCIENTIFIC I COM 883556102 232,776 35,603 128 0.6159
2022-11-14 2022-09-30 13F THERMO FISHER SCIENTIFIC I COM 883556102 197,173 -1,018 -0.51 100,004 -7.12 0.5764
2022-08-04 2022-06-30 13F THERMO FISHER SCIENTIFIC I COM 883556102 198,191 9,230 4.88 107,673 -3.53 0.5729
2022-05-13 2022-03-31 13F THERMO FISHER SCIENTIFIC I COM 883556102 188,961 -62,266 -24.78 111,610 -33.42 0.5580
2022-02-10 2021-12-31 13F THERMO FISHER SCIENTIFIC I COM 883556102 251,227 10,720 4.46 167,628 21.99 0.7028
2021-11-12 2021-09-30 13F THERMO FISHER SCIENTIFIC I COM 883556102 240,507 -933 -0.39 137,409 12.82 0.6129
2021-08-10 2021-06-30 13F THERMO FISHER SCIENTIFIC I COM 883556102 241,440 -25,658 -9.61 121,800 -0.08 0.5343
2021-05-13 2021-03-31 13F THERMO FISHER SCIENTIFIC I COM 883556102 267,098 -43,567 -14.02 121,898 -15.76 0.5954
2021-02-10 2020-12-31 13F THERMO FISHER SCIENTIFIC I COM 883556102 310,665 -1,262 -0.40 144,701 5.07 0.7526
2020-11-12 2020-09-30 13F THERMO FISHER SCIENTIFIC I COM 883556102 311,927 -8,258 -2.58 137,722 18.71 0.8123
2020-08-13 2020-06-30 13F/A-1 THERMO FISHER SCIENTIFIC I COM 883556102 320,185 -53,240 -14.26 116,016 9.55 0.7232
2020-08-13 2020-06-30 13F THERMO FISHER SCIENTIFIC I COM 883556102 320,185 -53,240 116,016 351,230.1912
2020-05-14 2020-03-31 13F THERMO FISHER SCIENTIFIC I COM 883556102 373,425 -4,778 -1.26 105,903 -13.81 0.7758
2020-02-10 2019-12-31 13F THERMO FISHER SCIENTIFIC I COM 883556102 378,203 9,191 2.49 122,867 14.31 0.7442
2019-11-12 2019-09-30 13F THERMO FISHER SCIENTIFIC I COM 883556102 369,012 48,483 15.13 107,482 14.18 0.7284
2019-07-30 2019-06-30 13F THERMO FISHER SCIENTIFIC I COM 883556102 320,529 35,910 12.62 94,133 20.83 0.6466
2019-05-14 2019-03-31 13F THERMO FISHER SCIENTIFIC I COM 883556102 284,619 284 0.10 77,906 22.43 0.5226
2019-02-12 2018-12-31 13F THERMO FISHER SCIENTIFIC I COM 883556102 284,335 -21,293 -6.97 63,631 -14.70 0.4745
2018-11-13 2018-09-30 13F THERMO FISHER SCIENTIFIC I COM 883556102 305,628 -9,585 -3.04 74,597 14.25 0.4090
2018-08-01 2018-06-30 13F THERMO FISHER SCIENTIFIC I COM 883556102 315,213 47,953 17.94 65,293 18.33 0.3854
2018-05-14 2018-03-31 13F THERMO FISHER SCIENTIFIC I COM 883556102 267,260 -18,556 -6.49 55,179 1.67 0.3374
2018-02-13 2017-12-31 13F THERMO FISHER SCIENTIFIC I COM 883556102 285,816 -28,797 -9.15 54,270 -8.82 0.3073
2017-11-13 2017-09-30 13F THERMO FISHER SCIENTIFIC I COM 883556102 314,613 6,939 2.26 59,519 10.86 0.3203
2017-08-07 2017-06-30 13F THERMO FISHER SCIENTIFIC I COM 883556102 307,674 820 0.27 53,689 13.92 0.3001
2017-05-15 2017-03-31 13F THERMO FISHER SCIENTIFIC I COM 883556102 306,854 -13,894 -4.33 47,129 4.11 0.2697
2017-02-13 2016-12-31 13F THERMO FISHER SCIENTIFIC I COM 883556102 320,748 39,568 14.07 45,267 1.22 0.2704
2016-11-14 2016-09-30 13F THERMO FISHER SCIENTIFIC I COM 883556102 281,180 17,495 6.63 44,722 14.78 0.2790
2016-08-05 2016-06-30 13F THERMO FISHER SCIENTIFIC I COM 883556102 263,685 41,827 18.85 38,962 24.03 0.2670
2016-05-12 2016-03-31 13F THERMO FISHER SCIENTIFIC I COM 883556102 221,858 3,755 1.72 31,413 1.54 0.2335
2016-02-11 2015-12-31 13F THERMO FISHER SCIENTIFIC I COM 883556102 218,103 -1,377 -0.63 30,938 15.28 0.2346
2015-11-12 2015-09-30 13F THERMO FISHER SCIENTIFIC I COM 883556102 219,480 -4,754 -2.12 26,838 -7.76 0.2223
2015-08-06 2015-06-30 13F THERMO FISHER SCIENTIFIC I COM 883556102 224,234 11,070 5.19 29,096 1.61 0.2058
2015-05-14 2015-03-31 13F THERMO FISHER SCIENTIFIC I COM 883556102 213,164 213,164 0.00 28,636 0.1962
2015-02-05 2014-12-31 13F/A-1 THERMO FISHER SCIENTIFIC I COM 883556102 0 -164,273 -100.00 0 -100.00
2014-11-13 2014-09-30 13F THERMO FISHER SCIENTIFIC I COM 883556102 164,273 870 0.53 19,992 3.68 0.1582
2014-08-13 2014-06-30 13F THERMO FISHER SCIENTIFIC I COM 883556102 163,403 560 0.34 19,282 -1.52 0.1474
2014-05-14 2014-03-31 13F THERMO FISHER SCIENTIFIC I COM 883556102 162,843 20,360 14.29 19,580 23.42 0.1587
2014-02-13 2013-12-31 13F THERMO FISHER SCIENTIFIC I COM 883556102 142,483 5,423 3.96 15,865 25.61 0.1326
2013-11-13 2013-09-30 13F THERMO FISHER SCIENTIFIC I COM 883556102 137,060 27,679 25.31 12,630 36.44 0.1108
2013-08-01 2013-06-30 13F THERMO FISHER SCIENTIFIC I COM 883556102 109,381 109,381 9,257 0.0936
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.