What is CUSIP 883556102?

CUSIP 883556102 is the security identifier used in SEC filing datasets for TMO - THERMO FISHER SCIENTIFIC INC. - COM.

Who owns TMO - THERMO FISHER SCIENTIFIC INC. - COM based on 13F filings?

2554 institutions reported positions in TMO - THERMO FISHER SCIENTIFIC INC. - COM as of Q1 2026. Open the latest holders period and ownership history tables on this page for position-level details.

Security Snapshot

THERMO FISHER SCIENTIFIC INC. - COM (TMO) Institutional Ownership

CUSIP: 883556102

13F Institutional Holders and Ownership History from Q1 2014 to Q1 2026

Latest Period

Q1 2026

Institutions Reporting

2,554

Shares (Excl. Options)

331,115,392

Price

$491.53

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Type / Class: Equity / COM
Symbol: TMO on NYSE
Price per share: $466.26
All holders as of 31 Mar 2026: Q1 2026
Total 13F shares: 331,115,392
Total reported value: $162,813,925,161
% of total 13F portfolios: 0.13%
Share change: -10,617,233
Value change: -$5,824,244,081
Number of holders: 2,554
Price from insider filings: $466.26

Reported Shares, Excluding Options vs Price

Reported Value, Excluding Options

Total Investors

Key facts

TMO - THERMO FISHER SCIENTIFIC INC. - COM is tracked under CUSIP 883556102.
2554 institutions reported positions in Q1 2026.
Schedule 13D/13G significant owner rows are not currently available.

Change

Holder count moved from 2,679 to 2,554 between Q4 2025 and Q1 2026.
Reported value moved from $198,829,961,148 to $162,813,925,161.

Research use

You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.

Evidence

Source: SEC Form 13F

Latest holder context comes from 2554 institutions filings for Q1 2026.

Open SEC Evidence

Security key

883556102

Latest holder period

Q1 2026

13F holders

2,554

13D/G owners

CIK / CUSIP context first

Open Q1 2026 holders TMO full holder history THERMO FISHER SCIENTIFIC INC. SEC filings THERMO FISHER SCIENTIFIC INC. company facts THERMO FISHER SCIENTIFIC INC. insider transactions

Broader feeds

Latest 13F filings Latest 13D/G filings All securities

Recent Quarterly Holder Reports

Open recent reporting periods for CUSIP 883556102:

Q1 2026 (2554 holders) Q4 2025 (2679 holders) Q3 2025 (2487 holders) Q2 2025 (2429 holders) Q1 2025 (2544 holders) Q4 2024 (2590 holders) Q3 2024 (2549 holders) Q2 2024 (2525 holders) Q1 2024 (2505 holders) Q4 2023 (2471 holders)

As of 31 Mar 2026, 2,554 institutional investors reported holding 331,115,392 shares of THERMO FISHER SCIENTIFIC INC. - COM (TMO).

Institutional Holders of THERMO FISHER SCIENTIFIC INC. - COM (TMO) across Reporting Periods

Period	Reported Shares, Excl. Options	Value, Excl. Options	Value Change	Puts Notional Value	Calls Notional Value	Price (Median)	Investors
2026 Q1	331,115,392	$162,813,925,161	-$5,824,244,081	$1,076,816,622	$768,893,023	$491.53	2,554
2025 Q4	343,122,459	$198,829,961,148	+$6,488,666,914	$1,934,705,761	$1,209,256,183	$579.45	2,679
2025 Q3	330,918,498	$160,434,425,509	-$939,278,690	$1,610,710,732	$2,008,964,140	$485.02	2,487
2025 Q2	333,543,983	$135,263,140,409	+$600,593,869	$1,287,836,786	$1,454,914,388	$405.46	2,429
2025 Q1	332,262,896	$165,122,448,786	-$3,233,149,584	$961,308,168	$871,547,400	$497.60	2,544
2024 Q4	338,500,236	$176,259,958,087	+$285,220,456	$1,301,261,697	$1,047,910,149	$520.23	2,590
2024 Q3	336,017,029	$207,590,861,053	-$1,002,552,096	$1,649,310,079	$1,463,846,672	$618.57	2,549
2024 Q2	338,224,382	$186,983,733,629	+$1,597,360,634	$1,140,950,620	$754,058,848	$553.00	2,525
2024 Q1	336,700,181	$195,584,231,699	-$2,039,744,186	$1,117,554,088	$915,984,969	$581.21	2,505
2023 Q4	341,358,721	$181,225,391,520	-$1,048,026,032	$1,372,644,256	$1,609,336,603	$530.79	2,471
2023 Q3	341,222,039	$172,642,670,730	+$796,613,153	$1,017,166,735	$1,027,322,687	$506.17	2,346
2023 Q2	339,845,026	$177,377,106,109	-$343,685,977	$1,009,778,369	$974,112,597	$521.75	2,368
2023 Q1	339,392,049	$195,556,995,210	-$2,440,326,290	$1,094,314,444	$1,217,096,815	$576.37	2,361
2022 Q4	345,955,336	$190,604,505,357	+$1,002,036,679	$1,246,251,593	$1,415,352,664	$550.69	2,350
2022 Q3	345,593,172	$175,477,712,816	-$673,138,797	$1,008,449,555	$1,141,422,271	$507.19	2,243
2022 Q2	342,593,255	$186,075,132,908	+$892,640,669	$856,416,432	$797,759,550	$543.28	2,263
2022 Q1	343,460,281	$202,881,714,850	-$887,452,301	$1,467,585,820	$800,125,670	$590.65	2,299
2021 Q4	344,730,280	$229,739,567,497	-$130,457,390	$2,181,691,144	$1,422,735,608	$667.24	2,327
2021 Q3	345,151,682	$197,228,912,419	+$1,443,395,433	$1,888,195,862	$1,473,583,876	$571.33	2,116
2021 Q2	342,390,438	$172,667,479,252	-$758,086,603	$1,076,573,455	$986,737,589	$504.47	2,062
2021 Q1	344,293,306	$157,129,069,280	-$1,872,164,016	$791,322,846	$1,147,519,000	$456.38	2,030
2020 Q4	348,186,852	$162,181,415,503	-$1,785,309,331	$1,099,072,238	$922,939,686	$465.78	2,011
2020 Q3	351,796,125	$155,230,022,725	-$529,007,703	$767,220,000	$604,083,000	$441.52	1,833
2020 Q2	352,277,275	$127,625,318,997	+$582,924,270	$480,444,000	$489,089,000	$362.34	1,731
2020 Q1	351,167,013	$99,634,377,150	-$1,624,570,832	$356,186,000	$315,889,000	$283.60	1,660
2019 Q4	356,275,742	$115,729,191,229	-$664,660,614	$371,493,000	$337,145,000	$324.87	1,665
2019 Q3	358,400,005	$104,367,420,082	+$515,519,296	$234,415,000	$306,979,000	$291.27	1,536
2019 Q2	356,675,745	$104,717,252,499	+$864,614,540	$200,008,000	$298,351,000	$293.68	1,548
2019 Q1	355,598,323	$97,312,840,211	+$840,454,294	$155,033,000	$175,638,000	$273.72	1,506
2018 Q4	353,032,539	$78,994,218,006	-$406,650,567	$230,093,000	$310,225,000	$223.79	1,443
2018 Q3	354,136,773	$86,427,564,263	+$1,029,014,839	$240,225,000	$259,706,000	$244.08	1,338
2018 Q2	350,996,332	$72,697,641,768	-$10,820,539	$194,497,000	$204,863,000	$207.14	1,309
2018 Q1	350,812,046	$72,413,247,054	-$462,055,392	$190,213,024	$196,225,000	$206.46	1,295
2017 Q4	353,031,281	$67,030,846,527	+$450,162,471	$160,794,440	$134,462,664	$189.88	1,237
2017 Q3	350,201,347	$66,229,707,160	+$2,378,017,881	$115,488,000	$131,200,000	$189.20	1,155
2017 Q2	338,205,676	$58,974,545,770	-$164,507,483	$101,732,000	$97,528,000	$174.47	1,152
2017 Q1	342,997,958	$52,690,232,800	+$3,217,117,304	$74,696,000	$97,553,000	$153.60	1,128
2016 Q4	344,073,938	$48,553,879,247	-$1,014,313,344	$105,738,000	$85,230,000	$141.10	1,104
2016 Q3	348,599,343	$55,405,804,983	+$124,954,541	$115,501,000	$199,554,000	$159.06	1,031
2016 Q2	346,231,220	$51,158,501,244	-$83,250,961	$92,208,000	$194,919,000	$147.76	1,044
2016 Q1	347,539,524	$49,166,348,118	-$971,227,508	$98,873,000	$74,502,000	$141.59	1,012
2015 Q4	355,243,251	$50,383,705,835	-$257,745,683	$116,932,000	$271,978,000	$141.85	1,004
2015 Q3	358,311,366	$43,804,889,112	+$922,046,390	$103,967,000	$160,749,000	$122.28	970
2015 Q2	353,231,940	$45,843,531,905	-$616,234,153	$119,288,000	$311,927,000	$129.76	973
2015 Q1	357,729,757	$48,028,956,881	-$691,611,805	$118,682,000	$247,238,000	$134.34	962
2014 Q4	363,283,145	$45,519,185,841	+$100,594,092	$130,689,000	$171,260,000	$125.29	952
2014 Q3	362,236,585	$44,083,682,038	-$402,303,549	$103,384,000	$153,233,000	$121.70	908
2014 Q2	365,595,920	$43,150,312,823	+$443,731,574	$116,066,000	$184,859,000	$118.00	904
2014 Q1	361,802,548	$43,485,803,437	+$446,461,685	$163,856,000	$441,281,000	$120.24	907