Concentration Risk After Exit | Wealth Protection Advisory

Why concentration is the #1 post-exit risk

Founders, executives, and inheritors of family wealth often hold 50–95% of net worth in a single security or company. The concentration created the wealth; preserving it requires deliberately taking concentration off the table. Single-stock historical drawdowns regularly exceed 70%, while the diversified market drawdowns that scare retirees rarely exceed 50%.

How to actually measure it

Position-level concentration — % of liquid net worth in any single security.
Issuer aggregation — common stock + RSUs + ESPP + options + 401(k) employer match all count.
Sector concentration — engineering at a tech company + a tech-heavy 401(k) + a tech-heavy taxable account is one bet.
Earned-income overlap — your wages and your stock are one underlying business.

Tools to reduce exposure

Tool	What it does	Best fit
Outright sale + tax	Direct exposure reduction	Simple cases; QSBS-eligible exits
10b5-1 trading plan	Pre-arranged sales schedule	Insiders with trading windows
Exchange fund	Pool stock with other concentrated holders, receive diversified portfolio (no current tax)	Holdings >$1M, 7-year lock-up acceptable
Charitable Remainder Trust (CRT)	Sells inside trust without immediate gain; pays annuity	Significant charitable intent + need for income
Donor-Advised Fund (DAF)	Donate shares; deduction now; eliminate gain	Charitable intent without lifetime income need
Direct indexing + completion portfolio	Build the rest of portfolio around the concentration; tax-loss harvest	Hold-to-step-up scenarios
Collar (long put + short call)	Caps downside and upside	Short-term risk management around a known event

The tax constraint

Most concentrated positions carry a large embedded capital gain. The economic question is: what is the after-tax value of diversifying vs. the after-tax value of holding the concentration through the next 5–10 years? The answer depends on:

Time horizon and the household's spending need.
Volatility and idiosyncratic risk of the position.
Available step-up paths (death, charitable contribution, exchange fund).
Marginal capital gains rate (federal + state + NIIT) at the time of sale.

For most founders post-exit, deferring tax to hold a concentrated position is a bad trade — the avoided tax is small relative to the variance of the underlying.

The behavioral problem

Endowment effect: the position feels safer than it is because it is yours.
Anchoring to the high: "I'll sell when it gets back to $X" indefinitely.
Tax aversion: "I won't pay 25% to diversify" — but accepting 75% drawdown risk implicitly.
Identity: the stock is part of the founder's professional identity.

Year-1 playbook

Quantify total household exposure including RSUs, options, ESPP, 401(k) employer stock.
Set a target single-issuer ceiling (commonly 5–10% of liquid net worth).
Decide the path: outright sale, 10b5-1, exchange fund, CRT/DAF, or hybrid.
Pre-arrange the trade schedule across 12–36 months.
Build the completion portfolio around the residual concentration.
Pair with charitable plan if intent exists.

Frequently Asked Questions

What counts as a concentrated position?

Most planners define concentration as more than 10% of liquid net worth in a single security or issuer. Above 25% the household plan is materially exposed to single-issuer outcomes; above 50% the household plan effectively is the position.

What is an exchange fund?

A private partnership that pools concentrated stock from multiple holders and gives each contributor a pro-rata interest in the diversified pool. No taxable event at contribution. Typical lock-up is 7 years; minimum contributions usually start at $1M+.

Should I just hold the stock and let it step up at death?

Step-up at death eliminates capital gains tax on the remaining position. The trade-off is decades of single-issuer risk during life. The strategy works only when (a) the household has substantial diversified wealth outside the position and (b) the heirs would receive the stepped-up basis without first needing to sell for liquidity.

What is a 10b5-1 plan?

A pre-arranged trading plan that allows insiders to sell stock on a set schedule without violating insider trading rules. Required cooling-off periods apply (90 days for officers/directors, 30 days for others under SEC 2023 amendments).

Does a CRT eliminate concentration risk?

It moves the concentrated stock into a trust that can sell without immediate capital gains tax and pay the donor an annuity or unitrust amount. The donor's economic exposure shifts from a concentrated stock to a diversified trust portfolio plus the income stream.

Can I diversify in chunks across years?

Yes — and for most founders this is the most practical approach. A 36-month tranching plan combined with charitable contributions and direct indexing can dramatically reduce exposure with manageable annual tax cost.

How does direct indexing help with concentration?

Direct indexing builds the rest of the portfolio around the concentrated position, generating ongoing tax-loss harvesting credits that offset gains realized as the concentration is gradually sold down. It does not eliminate concentration — it makes diversifying less expensive.

What about a collar to protect downside?

A long-put + short-call collar caps both downside and upside on the position for a defined period. Useful around known events (lockup expiration, secondary offering, sale of the company) but not a long-term substitute for diversification.

Concentration Risk After Exit: A Founder's Diversification Playbook