Est. 1976 · A Private Family Office
Family Values.
Legacy of Service.
For nearly five decades, William Harris Investors has quietly managed and grown the wealth of one family across four generations — with the discipline, discretion, and patience that endures.
Our Heritage
Built by one family, for the generations that follow.
In 1976, Irving B. Harris established William Harris Investors to steward his family's wealth with the same principles that defined his life's work — fairness, intelligence, and a deep commitment to philanthropy.
Nearly five decades later, that founding purpose is unchanged. We remain a single-family office, free of outside pressures and short-term incentives, measuring success in decades rather than quarters.
Four generations on, the family's capital — and its values — continue to compound.
“Fairness, intelligence, and philanthropy.”
Our Approach
Disciplined stewardship, across every dimension of wealth.
Investment Management
A patient, conviction-led portfolio built for preservation and durable growth — unhurried by market noise and aligned to a generational horizon.
Wealth Management
Integrated planning across tax, trust, and estate — structured so that capital, and the intentions behind it, pass cleanly to the next generation.
Family Office Operations
The quiet machinery of a family enterprise — administration, reporting, governance, and philanthropy — handled with precision and absolute discretion.
Our Values
Three principles, inherited and upheld.
Fairness
We act as true fiduciaries — transparent, even-handed, and accountable to the family above all else.
Intelligence
Rigorous, independent thinking. We move with conviction, not consensus, and never confuse activity for progress.
Philanthropy
Wealth in service of something larger. Giving is not an afterthought here — it is woven into who we are.
Private Inquiry
A relationship measured in generations.
We work with a small number of families and partners who share our long view. If that is you, we would welcome a private conversation.