As SpaceX Lockup Periods Expire, Wealth Managers Navigate a Complex Path to Diversification

For many ultra-high-net-worth (UHNW) families, the initial thrill of a high-profile IPO often masks the complex financial reality that follows. While securing an allocation in a major offering like SpaceX is frequently viewed as a victory, the true test of wealth management begins when the lockup period—the contractual restriction preventing insiders from selling shares—begins to lift. As these restrictions expire, many investors find themselves staring at a daunting concentration of their net worth tied to a single stock, forcing a difficult balancing act between tax liabilities, liquidity needs, and the desire for long-term portfolio diversification.

SpaceX has emerged as the definitive case study for this modern financial challenge. Unlike the standard market entry, where a company might float 20% of its shares to the public, SpaceX floated only about 5% of its equity during its June 12 IPO. This limited supply, coupled with a staggered unlocking schedule, creates a unique liquidity environment. Rather than a singular date when all insiders can exit their positions, the company’s share availability is released in phases. Significant blocks of shares—totaling up to 1.3 billion—are slated to become eligible for sale following the company’s third-quarter earnings report, with another 800 million set to unlock on December 8. A larger, final expiration is scheduled for next year, while Elon Musk himself remains restricted until June 12, 2027, exactly one year after the IPO.

This extended waiting period is not merely a technicality; it introduces significant market risk. Data from NISA Investment Advisors, which analyzed 543 common stock IPOs between January 2019 and December 2025, reveals that shares often struggle during the lockup window. On average, these stocks underperformed the S&P 500 by 20.4% between their first-day closing price and the eventual lockup release date. For the UHNW client, this period of forced inaction can lead to substantial volatility and anxiety as their primary source of wealth remains trapped in a single, fluctuating asset.

The concentration risk is often far more pervasive than the direct stock holdings suggest. Many of these families established their positions long before the IPO through venture capital, private equity, or other private-market vehicles. As these holdings finally become liquid, financial advisors are tasked with the delicate process of reducing exposure without triggering catastrophic tax bills or undermining the family’s broader estate planning.

The Hidden Depth of Concentrated Stock Positions

Eric Metz, chief investment officer of SpiderRock Advisors at BlackRock, emphasizes that the very company that generated a founder’s or early employee’s wealth often evolves into the most significant threat to that wealth. While the theoretical goal is always diversification, an immediate, total liquidation is rarely the optimal strategy. Most clients are hindered by a very low cost basis, which would lead to massive capital gains taxes, or they remain deeply committed to the company’s long-term vision. Others simply have pressing liquidity requirements that make timing the sale difficult.

Metz argues that advisors must stop viewing public equity holdings in isolation. When a company hits the public markets, the concentration risk is often amplified by the client’s existing, less visible holdings. A client who holds a massive block of SpaceX shares might also own the stock indirectly through various index funds or institutional vehicles, further complicating the risk profile. "When that company becomes public, the resulting concentration can be broader than the client’s directly held stock position alone," Metz explains. "That makes the whole portfolio conversation important. Rather than examining a public equity holding in isolation, advisors need to understand where the client’s exposures overlap and how a liquidity event changes the overall risk picture."

This overlap has been exacerbated by the structural nature of modern markets. SpaceX’s immediate inclusion in the Nasdaq-100 following its June listing means that many investors who are already heavily weighted in SpaceX are effectively buying even more of the company every time they invest in the broader index. This creates a "domino effect" of risk that many, even sophisticated, investors fail to quantify.

To manage this, firms like SpiderRock often employ an option-overlay approach. This strategy allows clients to hedge their concentrated position to mitigate downside risk without necessarily selling the shares and triggering an immediate tax event. By utilizing an "Exchange Fund Replication" strategy, advisors can effectively replace the risk of the single stock with the risk profile of an index using listed options. The goal is to provide a smoother, more transparent transition toward broader market exposure while maintaining the client’s tax-sensitive position.

Planning for the Long Term

The consensus among wealth managers is that the industry as a whole is failing to address these risks early enough. Ben Domingue, founder and managing partner of Family Office Partners, notes that the most common failure in managing IPO wealth is a lack of foresight. "We often get brought in during the sixth or eighth inning, when the second or third inning would have made everything much easier," Domingue says. "Wealth is built through a series of transactions, not one."

Domingue highlights the danger of treating the first major transaction as if it were the final one. He suggests that by taking smaller, incremental amounts "off the table" years before an IPO, owners can navigate the eventual listing with far less psychological and financial stress. The transition from private ownership to a public entity does not inherently reduce risk; often, it simply shifts the nature of the challenge. While the owner may lose the hands-on control they held in the private company, they become subject to the whims of the public markets.

"Public markets bring a new kind of stress," Domingue observes. "Owners who are used to private valuations suddenly watch share swings move their net worth by eight or nine figures, often while locked up in restricted shares for 12 to 24 months or longer." He also warns that founders often treat their outside liquidity with the same aggressive, high-risk appetite they used to build their companies, ignoring the fact that their core wealth is already heavily tied to the success of one entity.

Strategic Diversification and the Planning Problem

For Kevin Thompson, founder and CEO of 9i Capital Group, the challenge of concentration is fundamentally a planning problem, not just a portfolio-management task. Thompson employs strategies such as direct indexing, where a client holds individual stocks within a separately managed account. This allows the advisor to systematically harvest losses from other parts of the portfolio to offset the gains realized when the concentrated holding is eventually sold.

Thompson echoes the concerns regarding the interconnectedness of modern financial markets. Because large institutional investors and corporate entities frequently invest in each other, the concentration of risk is often hidden deep within the client’s broader portfolio. "Public markets are dominated by large mega-cap companies investing in other companies, all while many of these same businesses issue debt through private markets, creating a domino effect of concentration risk that many investors do not recognize," he says.

For clients facing these complex trade-offs, Thompson suggests a range of options, including tax-managed charitable giving, the use of exchange funds, and deliberate, phased liquidation schedules. However, he warns against the temptation to prioritize the appearance of stability. "More liquid investments often experience greater observable price volatility, which comes with risk," Thompson notes. "However, longer investment horizons can help investors ride out short-term volatility. Conversely, less-liquid investments may appear to generate smoother returns over time, but that does not necessarily mean they carry less underlying risk."

Ultimately, the lesson for UHNW families is that the "pop" of an IPO price is a temporary event, whereas the management of that wealth is a lifelong endeavor. As the lockup periods for companies like SpaceX continue to expire, the focus of the advisor must shift from the pursuit of growth to the preservation of wealth. By integrating tax planning, liquidity management, and strategic diversification into a single, cohesive plan, advisors hope to protect their clients from the hazards of concentration, ensuring that the wealth created in the private market survives the transition to the public one.