When real estate and private investments dominate your portfolio.
Your investment statement says you're diversified. Your full balance sheet says otherwise. For many Texas households, the largest asset isn't in any brokerage account — it's the family home, a rental property, a working interest, or equity in a privately-held business.
Traditional portfolio analysis looks at marketable securities and stops. But for many Texas households, the bulk of net worth sits outside the brokerage statement: a paid-for primary residence, one or two rental properties, working interests in oil and gas wells, equity in a closely-held business, or a substantial stake in an employer's private stock. These positions are often the household's largest single asset — and they're invisible to the standard 'how diversified is my 401(k)?' question.
True concentration, measured honestly
The first step is to draw a full balance sheet. Real estate at market value (not basis). Business interests at a reasonable estimate. Working interests at producing-property valuation. Add it to the brokerage and retirement accounts. For most Texas households I work with, the resulting picture shows 50–70% of net worth in a small number of illiquid positions — far more concentrated than the brokerage statement suggests.
Why illiquid concentration matters
The danger isn't only volatility — it's correlation and liquidity. A retired engineer with a paid-for Houston home, two rental properties, and significant ExxonMobil stock has all four positions correlated to oil prices to some degree. A downturn in energy can push all four down simultaneously while the brokerage statement looks fine. And when something needs to be sold — medical event, family emergency, opportunity — the illiquid positions can't be reduced quickly without substantial discounting.
Real estate concentration
Texas property values have appreciated substantially over the past decade. Many retirees find themselves with a primary home worth far more than they expected, plus rental property purchased years ago. The temptation is to view the home as a 'forever' asset and the rentals as steady income. The honest accounting treats both as concentrated, illiquid positions with maintenance overhead, tax exposure (property tax is real money in Texas), and tenant or vacancy risk. Diversification options: 1031 exchange into a Delaware Statutory Trust (DST) for the rentals to spread the position across geography. Cash-out refinancing for liquidity (with caution about debt service in retirement). Eventual downsizing of primary residence to release equity into liquid assets.
Working interests and oil & gas
For Houston-area households, working interests in producing wells are common — often inherited or acquired during a career. These positions can produce strong income but carry full operating exposure (commodity prices, drilling costs, dry holes, plugging liability). True diversification often means converting working interests to royalty interests (lower upside, lower exposure) or selling to a producer over time. The tax treatment of conversions and sales is complex and worth specific advice.
Private business equity
For business owners, the company is usually the largest position and the hardest to diversify. Personal liquidity outside the business needs to be built deliberately during the working years, not assumed to come from an eventual sale. The 'I'll get my retirement when I sell the business' plan is a sequence-of-returns problem with no equity-market hedge: if the sale falls through or comes in below expectations, the entire retirement plan moves. Build outside liquidity proactively.
The behavioral problem
Concentrated positions usually got concentrated because they performed well. Selling feels like betraying the position that built your wealth. The math is dispassionate: concentration risk goes up as the position appreciates relative to the rest of the portfolio. The cure (diversifying) feels worst exactly when it's most needed (when the concentrated position is at its highest). Most clients I work with diversify in stages — selling 10–20% of the position per year over several years to soften the emotional and tax impact.
The portfolio I rebalance for clients is the one outside the brokerage statement. The brokerage statement balances itself.