# The Biggest Family Offices and What They Actually Hold The richest American fortunes barely appear in the quarterly 13F filings everyone reads. Here is what the Gates, Dell, Iconiq, Walton, Bloomberg, and Bezos vehicles actually disclose, and why most of the money stays invisible. Author: J.A. Watte Published: July 6, 2026 Source: https://jwatte.com/blog/top-family-offices-holdings/ --- The richest people in America mostly do not show up where you would look for them. Every quarter, a wave of Wall Street disclosures called Form 13F lists what the big money managers own, and financial media dutifully turns them into headlines. Yet the single fortunes that anchor this series often appear in those filings as a small, strange fragment of themselves, or not at all. The reason is structural, and once you see it you cannot unsee it: what a fortune reveals depends almost entirely on the legal shell it is wrapped in. ## The $100 million tripwire Form 13F is the disclosure that makes portfolios public, and it is narrow by design. Only an institutional manager with investment discretion over more than $100 million in Section 13(f) securities has to file it, and the filing is due 45 days after the end of each quarter ([SEC](https://www.sec.gov/divisions/investment/13ffaq)). Section 13(f) securities are mostly US-listed stocks and certain options. Private equity stakes, venture holdings, real estate, foreign-listed shares, and plain cash are all excluded. A family office can therefore hold billions and disclose almost nothing, either by keeping less than the threshold in reportable stock, by holding its wealth in forms the rule ignores, or by structuring itself so that no single filer has discretion over a reportable pile. That one rule explains most of what follows. It helps to separate the shapes these fortunes take, because the labels get used loosely and each shape files differently. A single-family office is a private company that serves exactly one family, like Bill Gates's Cascade Investment or Michael Bloomberg's Willett Advisors. A multi-family office or registered investment advisor pools many wealthy clients into one operation, which is what Iconiq Capital does. A foundation or charitable trust, such as the Gates Foundation Trust, invests an endowment rather than a living family's money, and it answers to charitable rules rather than to any one household. And some offices are run in a style closer to a hedge fund, with an entity that trades listed stock and therefore trips the 13F wire even when the family behind it would rather stay quiet. The same person can sit behind several of these at once, which is exactly why the filings are so easy to misread. The most instructive shape is the office that files nothing at all. Bill Hwang's Archegos Capital Management reportedly never filed a Form 13F in its eight years of operation, because it held its positions through equity total return swaps that gave it "economic exposure to the relevant stocks without directly owning them, thus avoiding direct-ownership-based disclosure requirements," and as a single-family office it fell under the Dodd-Frank carve-out that says such offices "are not investment advisers" ([Congressional Research Service](https://www.everycrsreport.com/reports/IF11825.html)). The gap was structural, not a trick. It held until March 26, 2021, when margin calls forced a fire sale of a portfolio reported near $100 billion, built on about $20 billion of net worth ([Congressional Research Service](https://www.everycrsreport.com/reports/IF11825.html)). The banks that had written the swaps lost more than $10 billion between them, over half of that Credit Suisse's roughly $5.5 billion ([Fortune](https://fortune.com/2021/07/29/credit-suisse-report-archegos-loss-bank-massive-culture-problem/)). Hwang was later convicted on ten counts, including racketeering conspiracy, securities fraud, and market manipulation, in July 2024, then sentenced that November to 18 years in prison, with the court ordering more than $9 billion in restitution ([Department of Justice](https://www.justice.gov/usao-sdny/pr/founder-and-head-archegos-capital-management-bill-hwang-sentenced-18-years-prison)). The shape can also run the other way. Steven Cohen's SAC Capital pleaded guilty to insider trading in November 2013 and paid a record $1.8 billion penalty ([Department of Justice](https://www.justice.gov/usao-sdny/pr/sac-capital-management-companies-plead-guilty-insider-trading-charges-manhattan-federal)), then converted to a family office running Cohen's own money. It did not stay quiet: on January 1, 2018 it re-registered as Point72, an SEC-registered adviser, reopened to outside capital and raised $5.76 billion that year, passing $20 billion in assets by January 2021 and $30 billion by July 2023 ([Point72](https://point72.com/what-we-do/)). ## Gates: the trust you can read and the company you cannot Bill Gates is the clearest example of the split. His charitable vehicle files. His private company does not. The Bill & Melinda Gates Foundation Trust filed a 13F for the first quarter of 2026 on May 15, 2026, reporting just under $31.67 billion across 22 holdings ([SEC](https://www.sec.gov/Archives/edgar/data/1166559/000110465926062592/primary_doc.xml)). It is worth being precise about what this entity is: a charitable trust that holds and invests the foundation's endowment, not a family office in the strict sense. Its book is unusually concentrated for something that size. Berkshire Hathaway alone is about $8.17 billion, roughly 25.8% of the total, followed by Waste Management at $6.35 billion (20.1%), Canadian National Railway at $5.33 billion (16.8%), Caterpillar at $4.50 billion (14.2%), Deere at $2.00 billion (6.3%), Ecolab at $1.39 billion (4.4%), and Walmart at $1.04 billion (3.3%) ([SEC](https://www.sec.gov/Archives/edgar/data/1166559/000110465926062592/infotable.xml)). Seven names account for the overwhelming bulk of a $31 billion portfolio. Then there is Cascade Investment, L.L.C., the Kirkland, Washington company that manages Gates's personal fortune. Cascade used to file 13Fs. It stopped. Its most recent 13F-HR covered the first quarter of 2009 and was filed on May 15, 2009, and every one of its 41 filings of that type falls between 1999 and 2009 ([SEC](https://data.sec.gov/submissions/CIK0001052192.json)). Since then, Cascade's positions surface only sideways, through the beneficial-ownership filings that large stakes trigger. In 2024 it filed Schedule 13D and 13G amendments on AutoNation and Otter Tail, and it files Form 4s as a major owner of names like Deere and Republic Services ([SEC](https://efts.sec.gov/LATEST/search-index?q=%22Cascade+Investment%22&forms=SC+13D,SC+13G&startdt=2024-01-01&enddt=2024-12-31)). Aggregators that stitch these filings together describe Cascade as the largest individual shareholder of Deere, at something like 10.8% or roughly 29 million shares, but that precise figure comes from older filings and third-party summaries rather than a freshly dated 2026 primary document ([GuruFocus](https://www.gurufocus.com/guru/bill+gates/current-portfolio/portfolio)). The stake is real and clearly above 5%. The exact current size is not something Cascade volunteers. Notice the tell: Republic Services sits in Cascade's orbit but is absent from the Foundation Trust's 22 holdings, which means it is a personal position, not an endowment one. ## When the office looks like a fund: MSD and Dell Michael Dell's office is the case where a 13F exists but tells you almost nothing. MSD Capital, L.P. filed for the first quarter of 2026 and reported just three positions worth a combined $87.3 million: Safehold at $78.2 million, or 89.6% of the disclosed book, Hayward Holdings at $5.1 million (5.9%), and Townsquare Media at $3.9 million (4.5%) ([SEC](https://www.sec.gov/Archives/edgar/data/1105497/000110465926062571/infotable.xml)). Set that against Dell's Forbes standing, discussed below, and the gap is the whole point. The filing sits below the $100 million line, which tells you the reportable listed-stock sleeve is a rounding error next to whatever the office holds in private companies, funds, and other excluded assets. The name on the filing is also a fossil. Dell founded the office in 1998 as MSD Capital. At the end of 2022 it reorganized as DFO Management, after MSD Partners combined with Byron Trott's BDT & Company to form BDT & MSD Partners, a merger announced in October 2022 and formally launched in January 2023 ([Wikipedia](https://en.wikipedia.org/wiki/DFO_Management)). The EDGAR filer is still called MSD Capital, L.P., which is why the tiny quarterly filing is easy to miss and easier to misread. ## When it looks like a wealth manager: Iconiq Iconiq Capital is the opposite failure mode: a large, legible 13F that belongs to no single family. For the first quarter of 2026 it reported about $4.46 billion across 96 line entries covering 58 distinct issuers ([SEC](https://www.sec.gov/Archives/edgar/data/1569709/000101143826000321/informationtable.xml)). The concentration leans toward enterprise software: Procore at $833 million (18.7%), ServiceTitan at $732 million (16.4%), Netskope at $563 million (12.6%), Blue Owl at $314 million (7.0%), and Shopify at $291 million (6.5%), followed by an iShares ETF, Alphabet, Chime, Nvidia, and Broadcom ([SEC](https://www.sec.gov/Archives/edgar/data/1569709/000101143826000321/informationtable.xml)). But Iconiq is not a single-family office. It is an SEC-registered investment advisor and multi-client wealth manager, paired with a late-stage venture arm called Iconiq Growth, running roughly $95 billion across about 1,537 accounts and founded in 2011 by former Goldman Sachs and Morgan Stanley advisors ([SEC IAPD](https://adviserinfo.sec.gov/firm/summary/159198)). Its client roster is the reason it draws attention: Mark Zuckerberg, Sheryl Sandberg, and Dustin Moskovitz are confirmed clients. Whatever label you use, multi-family office or multi-client wealth manager, it is pooling many fortunes into one filing, which is a different thing from one family laying its portfolio bare. The $4.46 billion in the 13F is only the listed-stock slice that a registered advisor has to report, and it sits under a far larger private and venture book that the rule leaves alone. Older reporting also ties Jack Dorsey and Reid Hoffman to the firm, but that is not confirmed in the primary record here, so it is best left as an unconfirmed claim. ## The Waltons keep two sets of books The Walton family shows both patterns at once. There is a filing you can read and a fortune you cannot. WIT, LLC, the Walton Investment Team's vehicle, filed for the first quarter of 2026 and reported about $5.30 billion across 22 entries ([SEC](https://www.sec.gov/Archives/edgar/data/1840025/000110465926061720/infotable.xml)). What it holds is almost aggressively boring: low-cost index funds. A Vanguard international equity index fund is about 42.4% of the book, an iShares fund another 25.8%, and the rest is a spread of Vanguard, iShares, and Schwab ETFs, right down to a $3.1 million position in the iShares Bitcoin Trust. WIT began operating around 2020 and first disclosed holdings for the fourth quarter of that year, reporting roughly $3.8 billion, a figure that grew toward the $4.5 billion to $5 billion range over the course of 2021 ([SEC](https://www.sec.gov/Archives/edgar/data/1840025/000110465921021462/primary_doc.xml)). Five billion dollars in ETFs is the small book. The large one never touches a 13F. The family's roughly 44% to 46% of Walmart is held privately through Walton Enterprises LLC and the Walton Family Holdings Trust, which report through Schedule 13D and 13G rather than 13F. As of December 17, 2024, Walton Enterprises held about 3.00 billion Walmart shares and the Walton Family Holdings Trust held about 604 million, which together come to roughly 45% of the company ([SEC](https://www.sec.gov/Archives/edgar/data/104169/000114036125002729/ef20039847_ex1.htm)). The index-fund book and the Walmart block are entirely separate things, and only the smaller one files the quarterly report everyone reads. ## The ones with nothing to file Some offices simply stopped appearing. Michael Bloomberg's Willett Advisors LLC filed 13Fs for a while and then went quiet: its last was for the third quarter of 2014, filed on November 4, 2014, and all 17 of its filings fall between 2011 and 2014 ([SEC](https://data.sec.gov/submissions/CIK0001509379.json)). Why it stopped is not documented in the filings themselves. Others were never there to begin with. Bezos Expeditions, Jeff Bezos's investment vehicle, and Emerson Collective, Laurene Powell Jobs's organization, have no filer on EDGAR at all and file no 13F. Company-name searches for both return empty ([SEC](https://www.sec.gov/cgi-bin/browse-edgar?company=bezos+expeditions&action=getcompany&output=atom)). Bezos still shows up in the record, but as an individual filing Form 4s and Schedule 13 documents on Amazon, not through a disclosed managed portfolio. The contrast with the headline wealth numbers is the point. On the Forbes 2026 list published in March, Bezos was around $224 billion, Michael Dell around $141 billion, Alice Walton around $134 billion and the richest woman in the world, Bloomberg around $109 billion, and Gates around $108 billion, with the broader Walton fortune above $200 billion ([Forbes](https://www.forbes.com/sites/chasewithorn/2026/03/10/forbes-worlds-billionaires-list-2026-the-top-200/)). Those are March snapshots, and they move. By mid-2026 several had drifted lower, with Gates nearer $106 billion and Alice Walton nearer $121 billion. Laurene Powell Jobs sits somewhere in the mid-teens of billions, though her exact rank is harder to pin down from the primary record. Line those figures up against the 13Fs and the mismatch is total. Dell's disclosed stock book is under $90 million against a fortune near $141 billion. Bezos and Powell Jobs disclose no managed book at all. ## The bottom line The lesson of these filings is not that anyone is hiding something illegal. It is that the public window into great wealth is small, oddly shaped, and easy to mistake for the whole room. A charitable trust files while the personal company beside it does not. A billionaire's office reports three stocks worth less than $90 million while the rest sits in private holdings the rule never asks about. A family's index funds are public while its founding stake shows up only where the ownership rules force it into view. What you can see is real, but it is a sliver, chosen by the structure of the fortune rather than by its size. Read the 13Fs by all means. Just remember they show you the part of the iceberg that happens to float above the $100 million line. ## Related reading - [Family offices, explained](/blog/family-offices-explained/): what a family office actually is and the tax and access advantages it captures. - [How deathless money invests](/blog/how-deathless-money-invests/): the taxonomy of how big pools of money actually put capital to work. - [The Walton family fortune](/blog/walton-family-wealth/): the two-book structure behind the largest family fortune in the country. - [The Rockefeller dynasty](/blog/rockefeller-dynasty/): the family that built the first modern family office. - [The working ledgers](/blog/the-working-ledgers/): the market and the money underneath every preserved fortune. ## Fact-check notes and sources - **The 13F rule**: the more-than-$100 million threshold, the 45-day quarterly cadence, and the exclusion of private equity, venture, real estate, foreign-listed shares, and cash: [SEC Form 13F FAQ](https://www.sec.gov/divisions/investment/13ffaq). - **Gates Foundation Trust**: total value and holdings from its Q1 2026 13F: [SEC primary document](https://www.sec.gov/Archives/edgar/data/1166559/000110465926062592/primary_doc.xml) and [SEC information table](https://www.sec.gov/Archives/edgar/data/1166559/000110465926062592/infotable.xml). This is a charitable trust, not a family office. - **Cascade Investment**: its 13F filing history ending at Q1 2009: [SEC submissions](https://data.sec.gov/submissions/CIK0001052192.json); its 2024 Schedule 13D and 13G activity: [SEC full-text search](https://efts.sec.gov/LATEST/search-index?q=%22Cascade+Investment%22&forms=SC+13D,SC+13G&startdt=2024-01-01&enddt=2024-12-31); the roughly 10.8% Deere figure is approximate and drawn from an aggregator, not a fresh 2026 filing: [GuruFocus](https://www.gurufocus.com/guru/bill+gates/current-portfolio/portfolio). - **MSD Capital and DFO Management**: Q1 2026 positions: [SEC information table](https://www.sec.gov/Archives/edgar/data/1105497/000110465926062571/infotable.xml); the 1998 founding and the DFO and BDT & MSD reorganization: [Wikipedia](https://en.wikipedia.org/wiki/DFO_Management). - **Iconiq Capital**: Q1 2026 13F: [SEC information table](https://www.sec.gov/Archives/edgar/data/1569709/000101143826000321/informationtable.xml); registration, assets, account count, and confirmed clients: [SEC IAPD](https://adviserinfo.sec.gov/firm/summary/159198). Reporting that ties Jack Dorsey and Reid Hoffman to the firm is historical and not confirmed in the primary record here. - **WIT, LLC and the Walton entities**: WIT Q1 2026 holdings: [SEC information table](https://www.sec.gov/Archives/edgar/data/1840025/000110465926061720/infotable.xml); its first disclosure of roughly $3.8 billion: [SEC primary document](https://www.sec.gov/Archives/edgar/data/1840025/000110465921021462/primary_doc.xml); Walton Enterprises and Walton Family Holdings Trust share counts as of December 17, 2024: [SEC Schedule 13D exhibit](https://www.sec.gov/Archives/edgar/data/104169/000114036125002729/ef20039847_ex1.htm). - **Willett, Bezos Expeditions, Emerson Collective**: Willett's 13F history ending at Q3 2014: [SEC submissions](https://data.sec.gov/submissions/CIK0001509379.json); the absence of any EDGAR filer for Bezos Expeditions and Emerson Collective: [SEC company search](https://www.sec.gov/cgi-bin/browse-edgar?company=bezos+expeditions&action=getcompany&output=atom). - **Net worth snapshots**: the as-of-March 2026 Forbes figures for Bezos, Dell, Alice Walton, Bloomberg, and Gates, with later-2026 drift noted: [Forbes](https://www.forbes.com/sites/chasewithorn/2026/03/10/forbes-worlds-billionaires-list-2026-the-top-200/). Laurene Powell Jobs' exact rank and net worth are not independently confirmed here. - **Archegos and the structural disclosure gap**: Bill Hwang's family office reportedly never filed a Form 13F in eight years, using total return swaps to avoid "direct-ownership-based disclosure requirements" and sitting under the single-family-office carve-out where such offices "are not investment advisers"; it held about $20 billion of net worth against a roughly $100 billion portfolio before its March 26, 2021 collapse, which cost banks more than $10 billion, over half of it Credit Suisse's roughly $5.5 billion: [Congressional Research Service](https://www.everycrsreport.com/reports/IF11825.html) and [Fortune](https://fortune.com/2021/07/29/credit-suisse-report-archegos-loss-bank-massive-culture-problem/). - **From conviction to comeback**: Hwang was convicted on ten counts in July 2024 and sentenced in November 2024 to 18 years with more than $9 billion in ordered restitution; separately, SAC Capital pleaded guilty to insider trading in November 2013 and paid a record $1.8 billion penalty before reopening as the SEC-registered adviser Point72 on January 1, 2018, raising $5.76 billion that year and passing $30 billion in assets by July 2023: [Department of Justice (Hwang)](https://www.justice.gov/usao-sdny/pr/founder-and-head-archegos-capital-management-bill-hwang-sentenced-18-years-prison), [Department of Justice (SAC)](https://www.justice.gov/usao-sdny/pr/sac-capital-management-companies-plead-guilty-insider-trading-charges-manhattan-federal), and [Point72](https://point72.com/what-we-do/). *This post is informational and educational, not tax, legal, or investment advice. Portfolio figures are reproduced from SEC filings as of the dates noted and change every quarter, and net worth estimates are as-of-date snapshots that move constantly. The individuals, firms, and offices named are discussed as a matter of public record and nominative fair use, with no affiliation or endorsement implied.* --- Canonical HTML: https://jwatte.com/blog/top-family-offices-holdings/ RSS: https://jwatte.com/feed.xml JSON Feed: https://jwatte.com/feed.json Hero image: https://jwatte.com/images/top-family-offices-holdings.webp