RSU Concentration Risk for NRIs: How to Identify and Manage It?

RSU concentration risk happens when too much of your net worth is tied to a single company's stock. For NRIs working at US tech companies, this is one of the most common and most ignored financial problems.

Your US colleague with the same holding faces one risk: the stock falls. You face three, with estate tax exposure and a growing India capital gains bill on top. Here is how to spot it, measure it, and fix it.

What is RSU concentration risk and how do you measure it

Concentration risk means too much of your net worth is tied to a single stock. When that stock is your employer's, you have a second layer of exposure: if the company hits trouble, you could lose both your job and a large chunk of your savings at the same time.

The formula to measure it is simple:

(Value of your single-stock holding / Total investable net worth) x 100 = Concentration %

Include vested stock, unexercised options, and unvested RSUs at today's price. Unvested shares may not be in your account yet, but they represent scheduled future delivery of more single-stock exposure. Leaving them out gives you a false sense of how diversified you are.

Example: Amit works at Meta. His vested RSUs are worth $500,000. His unvested grants are worth $180,000 at today's price. He has $300,000 in index funds and $220,000 in cash. Total net worth: $1.2M. His Meta concentration: ($500K + $180K) / $1.2M = 57%.

Under 10% is manageable. Between 10-20%, Fidelity research identifies this as the point where single-stock risk starts to matter. Above 20%, a single bad earnings quarter can do serious damage. Above 30%, most financial planners treat active diversification as urgent, not optional.

Why concentration risk hits NRIs harder

A US colleague with the same stock holding faces one risk: the stock could fall. As an NRI, you face three.

Your estate tax exposure scales with concentration

NRIs are classified as non-resident aliens (NRAs) under US tax law. For estate tax, NRAs face a $60,000 exemption on US situs assets. US-listed stocks, including your employer's shares, are US situs assets.

US citizens and residents currently get a $15M+ exemption. You get $60,000.

Every dollar of company stock above $60,000 sits inside your taxable US estate. The top estate tax rate is 40%.

Example: Priya holds $800,000 in Google stock when she dies. Her taxable US estate: $740,000. At 40%, her family faces up to $296,000 in US estate tax. India has no estate tax treaty with the US, so there is no offset.

The connection to concentration is direct: the more company stock you hold, the larger the estate above the $60K threshold. Reducing concentration is also reducing estate tax exposure, dollar for dollar. See the full breakdown in our guide to US estate tax exposure for NRIs.

Selling later costs more

Every year you hold an appreciated stock and choose not to sell, you are deferring a tax bill that grows with the stock price.

India taxes capital gains on US stocks at 12.5% for long-term gains (held more than 24 months after vesting). If your RSUs vested at $100 and the stock is now at $300, your gain per share is $200. Wait another year and the stock hits $400, your gain is $300. Same tax rate, but the bill is 50% larger.

NRIs often defer because they believe the stock will keep rising. That belief may be right, but it adds a growing tax cost to the concentration exposure. If you eventually want to diversify, the cost of exiting gets higher over time. For strategies specifically focused on reducing the tax cost, see RSU tax planning strategies for high-income NRIs.

The "I'll retire on this stock" trap

NRIs who joined US tech companies between 2015 and 2022 saw extraordinary stock gains. That experience creates a mental anchor: "I held through corrections before and was fine." Past performance in a bull market feels like evidence that holding is always the right call.

It is survivorship bias. The stocks that worked brilliantly are the ones you remember. The ones that did not, you never held.

Consider the data: J.P. Morgan research found that 40% of stocks in the Russell 3000 suffered a catastrophic loss, defined as a 70%-plus drop from their peak, at some point. Meta fell 77% in 2022. Cisco, a blue-chip company at the center of the dot-com boom, has still not recovered to its year-2000 peak. These are large-cap, well-known companies, not speculative bets.

There is also an emotional dimension specific to NRIs. You built your career at this company. Selling the stock can feel like a vote of no confidence in your employer, or in the years you put in to earn those grants. That feeling is understandable. It is also a poor reason to hold 40% of your net worth in a single position.

How RSU concentration builds faster than you think

Concentration grows passively. It requires no decision on your part.

Here is how it happens: your RSUs vest every quarter. The stock appreciates over the year. Your single-stock holding grows on both fronts. Meanwhile, your cash savings and index funds grow at a slower pace. The denominator of your concentration calculation (your total net worth) moves up less quickly than the numerator (your single-stock value).

On top of that, most tech company employees receive refresher grants every two to four years. Each grant adds another tranche of future vesting in the same stock.

Example: Rahul joined Google in 2020 with an initial grant worth $150,000. By mid-2024, after four years of quarterly vesting and stock appreciation, his Google holding is $420,000. His index funds and savings have grown to $750,000. His total net worth is $1.17M. His Google concentration has gone from 18% to 36%, without him ever making a single decision to hold more.

Reducing concentration requires an active decision. Building it requires none. That asymmetry is what catches most NRIs off guard. Each vest also triggers a taxable event in India, which is worth understanding before you plan any selling. The full details on how RSU vesting is taxed are covered in RSU taxation mechanics.

How to reduce RSU concentration risk

Set a sell discipline before your next vest

The hardest moment to sell is right after vesting. The stock is in your account, it has likely risen since your grant price, and selling feels like leaving money on the table. The decision to sell should be made before the vest date, not after.

Set a rule now: you will sell a fixed percentage of every vest automatically. A common range is 25-50% per vest. This is not a tax strategy. It is a portfolio protection rule that removes emotion from the decision.

Mark your vest dates in a calendar. Set a reminder two weeks before each one to confirm your sell order. Most US brokerages allow you to pre-set automatic sell instructions. Use that feature.

Review your total exposure quarterly

Your concentration number changes every quarter, even if you do nothing. Stock price moves, new vests settle, and your other assets grow or shrink. Check your concentration calculation at the start of each quarter.

What to include: vested stock at current price, unvested stock at current price (use today's share price multiplied by unvested shares), cash, index funds, India mutual funds, real estate equity (use a conservative estimate).

If your single-stock concentration has crossed 20%, treat it as a trigger to act. Do not wait for a "better time to sell."

Redirect proceeds into a diversified portfolio

Selling RSUs is only half the job. If you park the proceeds in a US dollar savings account, you have traded single-stock risk for currency and interest-rate concentration. The goal is to move the money into a diversified allocation.

A straightforward approach: US total market or S&P 500 index fund for US equity exposure, an international equity fund for non-US developed markets, and India-focused mutual funds for your home-country allocation. The right split depends on your time horizon, tax situation, and goals. You can find a framework for this in our guide to NRI asset allocation.

Count your unvested RSUs in the calculation

Most NRIs calculate concentration using only their current, vested stock. That understates the problem.

Unvested RSUs represent a scheduled delivery of more single-stock exposure. If you have two years of Google refresher grants left and Google already sits at 25% of your net worth, your actual expected concentration, accounting for vesting, is higher. You cannot sell unvested shares today, but you can factor them into your plan.

Treat unvested grants as soft exposure. When building your diversification schedule, account for the fact that each future vest will add to your single-stock position. That means selling more aggressively on current vests, not waiting for the unvested shares to arrive before acting.

Conclusion

RSU concentration builds silently, through vesting, stock appreciation, and refresher grants that compound over years.

For NRIs, the problem is more serious than for US colleagues because concentration directly amplifies two risks unique to your situation: the estate tax gap is enormous (you get $60,000, not $15M), and the cost of eventually selling grows with the stock price.

Run the concentration formula on your current holdings today. If you are above 20%, that number is your starting point for building a plan.