Diversifying out of a concentrated stock position is one of the most common, and complex, challenges faced by taxable investors. Whether the position was acquired through inheritance, equity compensation, a public offering, or long-term ownership, the same problem persists – significant unrealized gains can make selling prohibitively expensive from a tax perspective. 

In many cases, investors find themselves delaying action, hoping for favorable market conditions or charitable planning windows. However, doing nothing can often lead to prolonged exposure, increased risk, and missed opportunities. 

An emerging alternative for managing this issue is the use of a tax-aware long/short overlay strategy, a structure designed to facilitate gradual diversification and tax deferral in a customizable way. 

The Concentration Challenge 

We believe highly appreciated stock presents multiple risks: 

• Volatility and downside risks associated with single-stock exposure. 

• Lack of diversification limits broader asset allocation goals. 

• Unrealized gains, which can trigger significant tax liabilities upon sale. 

• Portfolio rigidity makes it difficult to rebalance or plan for liquidity. 

Common responses, such as systematic sales, exchange funds, or donations, may work in certain cases but also come with trade-offs: long lockups, pooled risk, or giving up control. 

Overlay Strategies: A Tax-Aware Bridge 

Rather than liquidating the concentrated stock directly, investors can contribute it in-kind into a separately managed account, where it becomes collateral for a long/short equity overlay. ¹ 

In this structure: 

• The core stock position remains intact, allowing for controlled sell-down over time. 

• The overlay generates losses through long and short positions, helping offset any gains triggered by phased diversification. 

• The account is structured to track a broader benchmark, preserving diversified equity exposure during the transition. 

• Capital gains can be spread across multiple tax years, reducing the risk of spiking into higher brackets. ² 

This approach introduces a layer of tax and risk management that can be customized to an investor’s specific circumstances. 

Why Use an Overlay Instead of Selling Directly?

A few potential key benefits stand out: 

• Controlled Exit. Overlay accounts enable gradual diversification rather than all-at-once decisions. 

• Tax Deferral. The strategy can help generate realized losses to offset gains, deferring taxes over time. 

• Market Exposure. Investors retain equity exposure while transitioning into a more diversified position. 

• No Lockups. Unlike exchange funds, overlay accounts typically offer daily liquidity. ³ 

For clients planning generational wealth transfers, philanthropic gifts, or future liquidity events, overlays can create a more flexible bridge to those outcomes. 

Conclusion

For investors with large, low-cost basis equity positions, diversification often feels like a trade-off between risk management and tax efficiency. A tax-aware long/short overlay strategy offers a third path, one that allows investors to begin the diversification process without triggering immediate capital gains. 

By leveraging appreciated stock as collateral and introducing a market-neutral structure, investors can gradually reduce risk, realize offsetting losses, and preserve exposure during the transition. 

At IEQ Capital, we help clients implement tax-aware strategies tailored to their specific needs, including overlay solutions for managing concentrated stock. If you’re evaluating how to reduce a large stock position without incurring disproportionate tax consequences, we invite you to connect with our investment team. 

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Key Considerations and Risks 

While powerful, overlay strategies require thoughtful implementation. Investors should consider: 

1. Equity Risk: These strategies provide broad exposure to public equity markets. Equity markets can be volatile and subject to sudden fluctuations in value. Such fluctuations, often driven by macroeconomic factors like recessions, interest rate changes, and inflation, can result in significant losses.  

2. Tracking Error Risk: These strategies make active investment decisions, which may result in significant deviations from a target benchmark. There is no guarantee that the manager will be successful in security selection and the manager may deliver significant pre-tax under-performance versus their benchmark.     

3. Use of Leverage: These strategies utilize varying and significant degrees of leverage, which incurs variable borrowing costs, may increase volatility of returns and the severity of any losses, and may require additional outside collateral in the event of a severe market downturn (referred to as a “margin call”).  

4. Use of Shorting: These strategies will actively short equity securities, which carries both investment risk and additional expenses. Short securities may be subject to a “short squeeze”, which could result in significant losses in that security over a short period of time. Shorting securities involves borrowing costs and expenses which can be variable over time.    

5. Tax Risk: It may not be possible to defer capital gains indefinitely, to the extent there is a significant liquidity or rebalancing need from the portfolio. No amount of capital loss generation is guaranteed, and it may not be possible to fully offset other capital gains using this strategy, if those gains are sufficiently large and/or there is inadequate time to generate offsetting capital losses in a calendar year. IEQ Capital, LLC does not provide tax or legal advice. You are strongly encouraged to consult with qualified tax and/or legal counsel to evaluate the potential tax implications associated with this strategy. 

Sources 

1. IEQ Capital Internal Research and Portfolio Implementation Materials (2024–2025). 

2. IRS Publication 550 – Investment Income and Expenses. 

3. Internal Revenue Code, Section 1211 – Limitations on capital losses. 

This document is for informational purposes only and is intended exclusively for the use of the persons to whom it is delivered and the information provided therein is confidential and may not be reproduced in its entirety or in part, or redistributed to any party in any form, without the prior written consent of IEQ Capital, LLC (“IEQ” or “IEQ Capital”). Information contained in this document is current only as of the date specified in the document, regardless of the time of delivery or of any investment, and IEQ does not undertake any duty to update the information set forth herein. The information contained in this document does not constitute an offer to sell or the solicitation of an offer to purchase or sell any securities, including any securities or alternative investments recommended by IEQ. Regarding alternative investments, any such offer or solicitation may be made only by means of the delivery of a confidential private offering memorandum which will contain material information not included herein regarding, among other things, information with respect to risks and potential conflicts of interest. No representation is made that any client will or is likely to achieve its objectives, that IEQ Capital’s strategies, investment process or risk management will be successful, or that any client will or is likely to achieve results comparable to any shown or will make any profit or will not suffer losses or loss of principal. Investing involves risks. You should not construe the contents of this document as legal, tax, investment or other advice. Any tax-related decisions should be made after conducting such investigations as the investor deems necessary and consulting the investor’s own legal, accounting and tax advisers to make an independent determination of the suitability and consequences of a composite election.