Who owns TMO (TMO)
Which tracked institutional funds hold TMO, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See TMO company fundamentals →
Ownership as of the 2026-Q1 13F filings. 13F is disclosed up to 45 days after quarter-end, so the most recent quarter fills in over the following weeks.
How the tape is positioned
The tracked-fund tape on TMO is one-sided between 2026-Q1 and 2026-Q2: 0 added or opened and 1752 trimmed or exited — on balance reducing.
A prompt to read the filings, not a verdict. 13F is a quarter-end snapshot disclosed up to 45 days late; a fund adds or exits for mandate, benchmark, and timing reasons that have nothing to do with a view on the stock. This is a starting question, not a signal to trade.
Conviction spread
TMO’s largest tracked holder by dollar value, VANGUARD GROUP INC, sizes it at 0.3% of its own reported 13F book, while the median holder sizes it at 0.4% of theirs — a 0.1pp gap the other way — the median holder sizes TMO more heavily than its largest holder by dollar value does.
Book-share is each fund’s reported value in TMO divided by its whole reported 13F book, so it is comparable across funds of different sizes and is unaffected by stock splits. A higher share means a fund has committed more of its book to the name — a starting question about conviction, not a verdict or a signal to trade.
Institutional & insider positioning
Between 2025-Q4 and 2026-Q1, across 2573 tracked filers holding TMO, 1131 increased or opened the position and 1379 reduced or closed it; over the same quarter, open-market insider Form 4 buying and selling roughly offset.
This fuses two public signals for the same quarter — how tracked institutions changed their positions and whether insiders bought or sold in the open market. It describes what was filed; it is a starting question, not a verdict or a signal to trade.
New buyers & exits
Funds opening or closing a position in TMO between the 2026-Q1 and 2026-Q2 13F filings, and the largest changes among funds holding it in both. New buyers and exits are counted on fund presence (split-invariant); adds and trims are measured on reported value.
Full exits 1751
- BlackRock, Inc.$14.6B
- VANGUARD CAPITAL MANAGEMENT LLC$11.9B
- STATE STREET CORP$8.2B
- MORGAN STANLEY$5.3B
- FMR LLC$5.3B
- GEODE CAPITAL MANAGEMENT, LLC$4.1B
Largest trims
- Lindsell Train Ltd$45M
Institutional holders
One row per tracked fund, largest reported value first. “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding. Rows marked stale are from an earlier filing than the security’s latest quarter — that fund is absent from the newest snapshot (position exited, or reported under a different name).
| Fund | Shares | Reported value | % of value | Quarter |
|---|---|---|---|---|
| BlackRock, Inc. trimmed | 29,795,682 | $14.6B | 9.5% | 2026-Q1 |
| VANGUARD CAPITAL MANAGEMENT LLC new | 24,280,816 | $11.9B | 7.8% | 2026-Q1 |
| STATE STREET CORP added | 16,731,668 | $8.2B | 5.4% | 2026-Q1 |
| MORGAN STANLEY trimmed | 10,863,528 | $5.3B | 3.5% | 2026-Q1 |
| FMR LLC added | 10,770,245 | $5.3B | 3.4% | 2026-Q1 |
| GEODE CAPITAL MANAGEMENT, LLC added | 8,407,891 | $4.1B | 2.7% | 2026-Q1 |
| FRANKLIN RESOURCES INC added | 6,813,031 | $3.3B | 2.2% | 2026-Q1 |
| Capital World Investors trimmed | 6,646,316 | $3.3B | 2.1% | 2026-Q1 |
| JPMORGAN CHASE & CO added | 6,795,482 | $3.3B | 2.1% | 2026-Q1 |
| PRICE T ROWE ASSOCIATES INC /MD/ trimmed | 6,315,471 | $3.1B | 2.0% | 2026-Q1 |
| NORGES BANK added | 6,187,594 | $3.1B | 2.0% | 2026-Q1 |
| VANGUARD PORTFOLIO MANAGEMENT LLC new | 6,163,370 | $3.0B | 2.0% | 2026-Q1 |
| BANK OF AMERICA CORP /DE/ trimmed | 5,533,403 | $2.7B | 1.8% | 2026-Q1 |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ trimmed | 3,013,109 | $2.3B | 1.5% | 2026-Q1 |
| Capital Research Global Investors added | 4,414,621 | $2.2B | 1.4% | 2026-Q1 |
| ROYAL BANK OF CANADA trimmed | 3,913,903 | $1.9B | 1.3% | 2026-Q1 |
| Capital International Investors added | 3,888,726 | $1.9B | 1.2% | 2026-Q1 |
| Bank of New York Mellon Corp added | 3,766,614 | $1.9B | 1.2% | 2026-Q1 |
| NORTHERN TRUST CORP trimmed | 3,415,610 | $1.7B | 1.1% | 2026-Q1 |
| GOLDMAN SACHS GROUP INC added | 3,157,226 | $1.6B | 1.0% | 2026-Q1 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC added | 2,934,842 | $1.4B | 0.9% | 2026-Q1 |
| DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main trimmed | 2,914,918 | $1.4B | 0.9% | 2026-Q1 |
| Fisher Asset Management, LLC added | 2,851,579 | $1.4B | 0.9% | 2026-Q1 |
| ALLIANCEBERNSTEIN L.P. trimmed | 2,190,608 | $1.3B | 0.8% | 2026-Q1 |
| Grantham, Mayo, Van Otterloo & Co. LLC added | 2,502,206 | $1.2B | 0.8% | 2026-Q1 |
| UBS Group AG added | 2,453,453 | $1.2B | 0.8% | 2026-Q1 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC added | 2,449,697 | $1.2B | 0.8% | 2026-Q1 |
| Legal & General Group Plc trimmed | 2,370,531 | $1.2B | 0.8% | 2026-Q1 |
| Invesco Ltd. added | 2,198,703 | $1.1B | 0.7% | 2026-Q1 |
| VANGUARD FIDUCIARY TRUST CO new | 2,111,667 | $1.0B | 0.7% | 2026-Q1 |
| Pictet Asset Management Holding SA trimmed | 2,061,343 | $1.0B | 0.7% | 2026-Q1 |
| Unisphere Establishment added | 2,060,000 | $1.0B | 0.7% | 2026-Q1 |
| Amundi added | 2,016,260 | $991M | 0.6% | 2026-Q1 |
| PRIMECAP MANAGEMENT CO/CA/ trimmed | 1,982,531 | $974M | 0.6% | 2026-Q1 |
| 1832 Asset Management L.P. added | 1,969,618 | $968M | 0.6% | 2026-Q1 |
| FLOSSBACH VON STORCH SE trimmed | 1,954,070 | $960M | 0.6% | 2026-Q1 |
| EdgePoint Investment Group Inc. added | 1,918,997 | $943M | 0.6% | 2026-Q1 |
| Mitsubishi UFJ Asset Management Co., Ltd. trimmed | 1,853,226 | $911M | 0.6% | 2026-Q1 |
| BARCLAYS PLC added | 1,844,083 | $906M | 0.6% | 2026-Q1 |
| SCHRODER INVESTMENT MANAGEMENT GROUP trimmed | 1,728,440 | $850M | 0.6% | 2026-Q1 |
| DIMENSIONAL FUND ADVISORS LP added | 1,689,790 | $830M | 0.5% | 2026-Q1 |
| AMERIPRISE FINANCIAL INC trimmed | 1,670,400 | $821M | 0.5% | 2026-Q1 |
| VIKING GLOBAL INVESTORS LP added | 1,668,025 | $820M | 0.5% | 2026-Q1 |
| Nuveen, LLC trimmed | 1,646,989 | $810M | 0.5% | 2026-Q1 |
| Clearbridge Investments, LLC trimmed | 1,610,697 | $792M | 0.5% | 2026-Q1 |
| PARNASSUS INVESTMENTS, LLC trimmed | 1,504,651 | $740M | 0.5% | 2026-Q1 |
| Swedbank AB trimmed | 1,480,294 | $728M | 0.5% | 2026-Q1 |
| WELLINGTON MANAGEMENT GROUP LLP trimmed | 1,474,244 | $725M | 0.5% | 2026-Q1 |
| WELLS FARGO & COMPANY/MN added | 1,443,512 | $710M | 0.5% | 2026-Q1 |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE trimmed | 1,423,710 | $700M | 0.5% | 2026-Q1 |
| LOOMIS SAYLES & CO L P trimmed | 1,363,758 | $670M | 0.4% | 2026-Q1 |
| DEUTSCHE BANK AG\ added | 1,260,345 | $619M | 0.4% | 2026-Q1 |
| LAZARD ASSET MANAGEMENT LLC trimmed | 1,222,057 | $601M | 0.4% | 2026-Q1 |
| Temasek Holdings (Private) Ltd added | 1,195,799 | $588M | 0.4% | 2026-Q1 |
| Focus Partners Wealth added | 1,140,952 | $561M | 0.4% | 2026-Q1 |
| Swiss National Bank added | 1,102,640 | $542M | 0.4% | 2026-Q1 |
| Sumitomo Mitsui Trust Group, Inc. trimmed | 1,078,539 | $530M | 0.3% | 2026-Q1 |
| Rathbones Group PLC added | 953,908 | $469M | 0.3% | 2026-Q1 |
| NEUBERGER BERMAN GROUP LLC trimmed | 885,570 | $435M | 0.3% | 2026-Q1 |
| FARALLON CAPITAL MANAGEMENT LLC added | 881,485 | $433M | 0.3% | 2026-Q1 |
| CITADEL ADVISORS LLC added | 864,489 | $425M | 0.3% | 2026-Q1 |
| Corient Private Wealth LLC added | 832,069 | $417M | 0.3% | 2026-Q1 |
| Veritas Asset Management LLP trimmed | 845,995 | $416M | 0.3% | 2026-Q1 |
| National Pension Service added | 829,652 | $408M | 0.3% | 2026-Q1 |
| Vanguard Global Advisers, LLC new | 822,047 | $404M | 0.3% | 2026-Q1 |
| APG Asset Management N.V. added | 932,138 | $398M | 0.3% | 2026-Q1 |
| London & Capital Asset Management Ltd added | 793,472 | $390M | 0.3% | 2026-Q1 |
| RAYMOND JAMES FINANCIAL INC added | 775,318 | $381M | 0.2% | 2026-Q1 |
| GENERATION INVESTMENT MANAGEMENT LLP trimmed | 773,600 | $380M | 0.2% | 2026-Q1 |
| Cantillon Capital Management LLC trimmed | 769,698 | $378M | 0.2% | 2026-Q1 |
| FIRST MANHATTAN CO. LLC. trimmed | 767,160 | $377M | 0.2% | 2026-Q1 |
| DekaBank Deutsche Girozentrale | 772,643 | $377M | 0.2% | 2026-Q1 |
| D1 Capital Partners L.P. new | 725,005 | $356M | 0.2% | 2026-Q1 |
| HSBC HOLDINGS PLC trimmed | 718,953 | $353M | 0.2% | 2026-Q1 |
| KING LUTHER CAPITAL MANAGEMENT CORP added | 709,494 | $349M | 0.2% | 2026-Q1 |
| BAILLIE GIFFORD & CO trimmed | 698,441 | $343M | 0.2% | 2026-Q1 |
| California Public Employees Retirement System trimmed | 696,589 | $342M | 0.2% | 2026-Q1 |
| BNP PARIBAS FINANCIAL MARKETS added | 665,128 | $327M | 0.2% | 2026-Q1 |
| Longview Partners (Guernsey) LTD trimmed | 662,828 | $326M | 0.2% | 2026-Q1 |
| JANUS HENDERSON GROUP PLC trimmed | 660,258 | $325M | 0.2% | 2026-Q1 |
| VANGUARD ASSET MANAGEMENT, Ltd new | 652,721 | $321M | 0.2% | 2026-Q1 |
| STIFEL FINANCIAL CORP trimmed | 649,147 | $319M | 0.2% | 2026-Q1 |
| CIBC Bancorp USA Inc. added | 645,011 | $317M | 0.2% | 2026-Q1 |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. trimmed | 640,384 | $315M | 0.2% | 2026-Q1 |
| Ninety One UK Ltd trimmed | 637,262 | $313M | 0.2% | 2026-Q1 |
| Handelsbanken Fonder AB trimmed | 634,828 | $312M | 0.2% | 2026-Q1 |
| Robeco Institutional Asset Management B.V. trimmed | 634,639 | $312M | 0.2% | 2026-Q1 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP trimmed | 634,369 | $312M | 0.2% | 2026-Q1 |
| VICTORY CAPITAL MANAGEMENT INC trimmed | 627,704 | $309M | 0.2% | 2026-Q1 |
| PRINCIPAL FINANCIAL GROUP INC trimmed | 624,721 | $307M | 0.2% | 2026-Q1 |
| Mirova US LLC trimmed | 615,090 | $302M | 0.2% | 2026-Q1 |
| ENVESTNET ASSET MANAGEMENT INC added | 613,387 | $301M | 0.2% | 2026-Q1 |
| RHUMBLINE ADVISERS trimmed | 611,950 | $301M | 0.2% | 2026-Q1 |
| Vontobel Holding Ltd. trimmed | 601,220 | $296M | 0.2% | 2026-Q1 |
| C WorldWide Group Holding A/S trimmed | 591,542 | $291M | 0.2% | 2026-Q1 |
| B. Metzler seel. Sohn & Co. AG trimmed | 581,290 | $286M | 0.2% | 2026-Q1 |
| VANGUARD GROUP INC added | 34,132,759 | $19.8B | 12.9% | 2025-Q4 stale |
| Alphinity Investment Management Pty Ltd added | 1,440,877 | $717M | 0.5% | 2025-Q1 stale |
| CIBC Private Wealth Group LLC trimmed | 806,898 | $468M | 0.3% | 2025-Q4 stale |
| Waverton Investment Management Ltd added | 691,342 | $335M | 0.2% | 2025-Q3 stale |
Ownership over time
Tracked institutional holder count and total shares held by filing quarter (independent scales). The curated-era tail and any mid-ingest latest quarter are handled honestly — a partial quarter is not drawn as a collapse.
Reading this table
Funds hold the same stock for different reasons — an index fund “holds” almost everything, an active manager sizes a name to a mandate and a benchmark, and each fund entered at its own price and time. Because 13F is filed up to 45 days after quarter-end, every row is a backward-looking snapshot; a manager may have traded since. Share-class siblings (a company’s A and C shares) are rolled up to one line so a dual-class name is never double-counted. Compare like-for-like. A large holder is not an endorsement, and a fund exiting is not a warning — this is a starting question, not a verdict.
About 13F filings
A Form 13F is a quarterly disclosure that institutional investment managers with over $100 million in US-listed equities must file with the SEC. In plain English: it is a snapshot of the long stock positions a fund held at the end of a quarter. It covers long US-listed equities only — not short positions, options, cash, or private holdings — and the funds shown are the large sample we track, not the complete 13F universe.