I Have 90% of My Net Worth in One Stock. How Do I Diversify Without a Massive Tax Bill?

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By Don Lair Published

Quick Read

  • Nvidia (NVDA) closed at $225.32 after hitting an all-time high of $236.54, with a trailing P/E of 46 and beta of 2.24, while Alphabet (GOOGL) posted 21.8% Q1 2026 revenue growth and 137.35% gains over the last year; Microsoft (MSFT) offers a lower-volatility landing spot with a 1.09 beta and recently raised quarterly dividend of $0.91.

  • Clients increasingly seek tax-aware diversification strategies using custom indexing and tax-loss harvesting to unwind concentrated positions in mega-cap tech stocks while managing embedded capital gains taxed at federal long-term rates up to 20% plus state and surtax.

  • The analyst who called NVIDIA in 2010 just named his top 10 stocks and Google wasn't one of them. Get them here FREE.

I Have 90% of My Net Worth in One Stock. How Do I Diversify Without a Massive Tax Bill?

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Ben Carlson of Ritholtz Wealth Management has flagged what he calls “one of the biggest trends that I’ve seen in the wealth management space in the last 5 years”: clients walking in the door already asking for tax-aware diversification, rather than advisors having to sell it to them. The two archetypes he cited on The Long View podcast will sound familiar to a lot of 24/7 Wall St. readers.

The first: “I have stock options in Google because I work there. It’s 90% of my net worth. I know I need to diversify, but I also don’t want to just rip the Band-Aid off and sell.” The second: “I put money in NVIDIA 7 years ago and it’s worth way more than it was, but help me diversify so I don’t lose it all, but also make the tax bill easier to withstand.”

Why the Problem Is Bigger Than Ever

NVIDIA (NASDAQ:NVDA | NVDA Price Prediction) closed at $225.32 on May 15, 2026, after touching an all-time high of $236.54 the day before. A holder who bought seven years ago is sitting on a position with a trailing P/E of 46 and a beta of 2.24. The stock fell from $110.15 on April 1, 2025 to an intraday low of $86.62 on April 7, 2025, a reminder that concentrated winners can give back more than 20% in a week.

The Google example is just as live. Alphabet (NASDAQ:GOOGL) is up 137.35% over the last year and 25.43% year-to-date, with Q1 2026 revenue growth of 21.8%. A long-tenured Googler with vested RSUs is staring at embedded gains taxed at federal long-term rates up to 20%, plus state, plus the 3.8% net investment income surtax.

The Toolkit (and the Kitces Caveat)

Carlson credits lower fees and the rise of direct and custom indexing for making tax-loss harvesting accessible to regular investors. A custom-indexed S&P 500 sleeve can harvest losses on individual constituents while the holder gradually unwinds the concentrated stake, often paired with exchange funds, charitable remainder trusts, or 10b5-1 plans for employees.

Christine Benz pushed back, citing a prior conversation with Michael Kitces who “felt that they were being kind of grossly oversold in terms of the dollar benefit or the percentage benefit to a portfolio.” Translation: the marketed alpha from tax-loss harvesting is often smaller than the brochures suggest, particularly in trending markets where losses are scarce.

Where the Money Tends to Land

Microsoft (NASDAQ:MSFT) is a common landing spot for diversifiers. Its beta of 1.09, -11.26% year-to-date performance, and recently raised $0.91 quarterly dividend illustrate the trade-off: lower torque, steadier cash flow. Carlson’s framing on The Long View is the right starting point. The right answer is rarely all at once.

Photo of Don Lair
About the Author Don Lair →

Don Lair writes about options income, dividend strategy, and the kind of boring-but-durable investing that actually funds retirement. He's the founder of FITools.com, an independent contributor to 24/7 Wall St., and a former writer for The Motley Fool.

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