List of the 30 Largest Single Family Offices Illinois [2024]

99,99 including VAT

This list includes 31 single family offices from Illinois, thereof 19 with E-Mail address, 31 with executive names. Free updates within one year are included in the purchase price, a preview file is available. The last update of the list was published on June 12th, 2024.

Suitable for mailings: The list contains columns for formal salutation, title, and the first and last name of the management.

This list is based on our database of the 400 largest US single family offices.

Customers who bought this product were also interested in
List of 800 European Single Family Offices
List of 250 Asia-Pacific Single Family Offices


illinois single family office directory

List of 3 large Single Family Offices in Illinois

This list contains three selected single family offices from our list. We want to provide you with an insight into what our list includes.

1. Equity Group Investments (Chicago)

Equity Group Investments was founded by Sam Zell more than 50 years ago. He is the Chairman of this single family office. Sam founded Equity Office Properties Trust, a large office REIT. It was sold for $39B in 2007. Besides his family office, he nowadays chairs four further companies that are all listed on the NYSE. Those companies are Equity Residential, Equity LifeStyle Properties, Equity Commonwealth, and Equity Distribution Acquisition Corp. Through the Zell Family Foundation, Sam also engages as a philanthropist. His family office invests in any asset classes and stages with no specific focus on any industry or geography. Able Freight,  EagleRidge Energy LLC, and Elessent Clean Technologies are among others part of its huge investment portfolio.

2. Spring Creek Partners (Rockford)

John R. Anderson was an early investor in Silicon Valley in the late 60s. He is the founder of Spring Creek Partners and senior partner at Anderson Enterprises, the holding company of the Anderson family. In 1968 he also founded Anderson Packaging Inc., a pharmaceutical packaging company. This single family office invests mainly in Venture Capital at every stage.

3. TK Capital LLC (Chicago)

TK Capital LLC was founded by Dennis Keller. Dennis is co-founder of Adtalem Global Education Inc., a company with the purpose to empower students to achieve their goals and be successful. He chairs the National Board of the Smithsonian Institution, the Princeton University School of Engineering and the Mpala Wildlife Foundation. Dennis is also the former director of Nicor Inc and Ryerson Inc. TK Capital LLC is interested in long-term investments in private companies with a healthy platform.


Chicago city

Information included in our list

  • Country of main location
  • Company name
  • Contact data (URL, address, state, e-mail, telephone number, executives)
  • Serial letter columns for mailings (formal salutation, first name, last name of the first executive)
  • LinkedIn profiles of the top management, if available
  • Family information (Name, Estimated family assets in M€, Holding structure)
  • Real Estate Focus (Yes/No) / Real Estate Focus Details / Examples of Real Estate Investments
  • Venture Capital Focus (Yes/No) / Details on Venture Capital Focus / Examples of Venture Capital Investments
  • Private Equity Focus (Yes/No) / Details on Private Equity Focus / Examples of Private Equity Investments
  • Financial assets focus (Yes/No)
  • Renewable Energy Focus (Yes/No)
  • Other focus (art, philanthropy, forestry, agriculture, etc.)
  • Dates of the entry creation, last check and last update

Values may be missing if some data points are not publicly available. The “largest single-family offices” are defined by the wealthiest families from Illinois who actively invest through investment vehicles and for whom reliable information is available. With regular, free updates and extensions, we constantly improve the data quality. 

Why Illinois is home to so many single family offices

There are several reasons for more than 30 single family offices being located in Illinois. The Lake Michigan bordering state has many extremely wealthy counties. For example,  Lake County, on the shores of Lake Michigan, is the 27th wealthiest county in the United States. Besides that, Illinois’ Chicago is the third most populated U.S. city – and a major financial and industrial center. Many major banks and investments firms have their headquarter in Chicago. Just to name a few: investment bank William Blair with $94BN assets under management, BMO Harris Bank or financial services company Northern Trust with $6BN assets under management.

Strong economy, dozens of billionaires, many family investment firms

Forbes counts 18 billionaires in Illinois in its richest list. Many of them are managing their fortune through own investment firms, so-called single family offices. The wealth’ of Illinois-based single family offices (and billionaires) is rooted in different sources. Ken Griffin from Chicago made its $11.7BN net worth through hedge funds, Sam Zell earned $5.5BN through real estate and private equity deals. Also the strong economy of Illinois’ created many wealthy families and single family offices. To give a few examples: Boeing (Chicago), Walgreens (Deerfield), Caterpillar (Deerfield) and AbbVie (North Chicago) are located in Illinois.


There are no reviews yet.

Be the first to review “List of the 30 Largest Single Family Offices Illinois [2024]”

Your email address will not be published. Required fields are marked *