William Harris Investors is a family office - single based in Chicago, United States, founded in 1976. Verified contact details, AUM data, and investment preferences on FindLPs.
William Harris Investors, Inc. (WHI) is a privately owned investment and wealth management firm that serves as the family office for the Irving B. Harris family. Founded in 1976 by Irving B. Harris to manage his own family's capital, WHI today provides investment and wealth management services to four generations of the Harris family. WHI's overall investment goal is to achieve attractive long-term, risk-adjusted returns while protecting capital during volatile markets. We invest in a broad array of strategies, including public and private equities, fixed income, venture capital, hedge funds, and real estate. WHI also provides the family with a broad range of professional and wealth management services, including financial and estate planning, trust services, cash management, accounting and administrative services, tax preparation, and a variety of philanthropic services. In addition, our affiliate WHI Trust Company, LLC provides trustee and trust administration and other services for Harris family trusts and a select group of other clients. WHI strives to maintain the high levels of integrity, loyalty, and excellence that Irving B. Harris expected when he began the company nearly half a century ago, and which enabled our founder to leave behind a strong legacy of fairness, intelligence, and service for the benefit of others.
Investment types: Buyout, Private Equity, Growth/Expansion, Hedge Fund, Real Estate - General, Real Estate Core, Real Estate Debt, Real Estate Distressed, Real Estate Opportunistic, Real Estate Value Added, Venture Capital, Venture Capital - Early Stage, Venture Capital - Later Stage
Sectors & themes: Manufacturing, Real Assets, Real Estate Investment & Development, TMT (Technology - Media - Telecom), Debt Issuance, Hedge Funds
Preferred geographies: United States, Great Lakes, Illinois
Location: 225 W. Wacker Drive\nSuite 2150\nChicago, Illinois \n60606\nUnited States
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LP firm data compiled from public regulatory filings (SEC Form ADV, FCA, AIFMD disclosures), company websites and press releases, LinkedIn public profiles, and verified outbound email testing. AUM figures reflect self-reported values from filings and may lag by 1–2 fiscal quarters; bands are normalized in USD. We do not publish personal residential information; firms or individuals may request removal at /contact. Methodology & sources · Updated July 2026.