For many tech professionals, a concentrated position in employer stock built through RSUs, options, or an ESPP represents both a significant wealth-building opportunity and one of the most underappreciated financial risks they carry. When a single stock represents a large percentage of your net worth, you’re carrying both income risk and investment risk tied to the same company. This guide covers the practical strategies for reducing concentration without triggering a catastrophic tax event.

How Concentration Happens and Why It’s Dangerous

Concentration builds gradually. Annual RSU vests, option exercises, and ESPP purchases accumulate over the years without feeling alarming in any single transaction. Then, after a few years of good stock performance, you check your net worth and realize 50%, 60%, or more is tied to a single company.

The risk compounds: your income and your net worth are both dependent on the same entity. A significant layoff or business downturn is precisely the scenario where both would decline simultaneously, the worst possible correlation for your financial security.

A general rule of thumb: no single stock should represent more than 10–15% of your investable net worth. This doesn’t mean you need to get there immediately, but it provides a useful target to work toward systematically.

Strategy 1: Systematic Selling

The most straightforward approach is a predetermined selling plan, selling a fixed dollar amount or percentage of the position on a regular schedule, regardless of short-term price movement.

This removes the emotional component of the decision. Rather than trying to time the market or waiting for a price target that feels satisfying, systematic selling diversifies the position over time without requiring any prediction about future performance.

A 10b5-1 plan, a pre-established trading plan that allows company insiders to sell shares on a schedule, provides additional protection from insider trading concerns for executives and other covered employees.

Strategy 2: Charitable Giving of Appreciated Shares

Donating appreciated stock directly to a charity or donor-advised fund (DAF) allows you to avoid capital gains tax on the appreciation entirely while deducting the full fair market value of the donation (subject to AGI limits). This is one of the most tax-efficient ways to reduce concentration while accomplishing charitable goals.

A donor-advised fund is particularly flexible: you can donate a large block of appreciated stock in a high-income year, take the deduction immediately, and distribute the funds to charities over time.

Strategy 3: Exchange Funds

An exchange fund allows investors with concentrated positions to contribute shares in exchange for a diversified fund interest, deferring capital gains tax without triggering a sale. Exchange funds require a minimum holding period (typically 7 years) and are generally available only to accredited investors with minimum contribution thresholds.

They’re not the right tool for everyone, but for investors with very large, very low-basis positions who don’t need short-term liquidity, they can be meaningful.

Strategy 4: Tax-Efficient Selling Over Multiple Years

Rather than selling a large position in a single year, which can push you into higher capital gains brackets and trigger the full net investment income tax (NIIT), spreading sales across multiple years manages the tax bracket impact. This requires planning ahead and ideally coordinating with the overall income picture for each year, including other gains, Roth conversions, and significant income events.

The Emotional Component

Selling employer stock is emotionally difficult. It can feel like a lack of conviction in the company, especially for employees who believe in the business. It’s worth separating the investment decision from the professional one: you can be deeply committed to your company’s mission and success while also recognizing that holding 60% of your net worth in any single asset, including one you believe in, is a financial risk that serves no one.

Millennial Wealth Tip: If you hold a meaningful concentrated position, the most useful starting point is a full picture of your current concentration, what percentage of your investable net worth is tied to a single stock, and a simple projection of where that number goes over the next 12–24 months if you take no action. From there, a systematic plan is almost always better than a reactive one.