SpaceX’s 911.5 Million Share Unlock: Will SPCX Stock Fall Further?

The scariest number surrounding SpaceX stock right now is not a revenue figure, valuation multiple or analyst estimate. It is 911.5 million. That is how many previously locked SpaceX shares may become eligible for trading on August 6. 

At SPCX’s latest pre-market price of $111.50, those shares have a notional value of approximately $101.6 billion. But treating that as a $102 billion sell order would be a major analytical mistake.

Let’s break down who can actually sell SpaceX shares, why many holders may still be sitting on sizable gains, how much selling the market could absorb, and whether this feared unlock could pressure SPCX further or help it establish a bottom.

What Happens During the SpaceX Stock Unlock on August 6?

A lock-up agreement prevents employees, early investors and other pre-IPO shareholders from selling their shares for a specified period after a company goes public.

On August 6, the second full Nasdaq trading day following SpaceX’s first quarterly results, up to 911.5 million Class A shares are eligible to be released from certain lock-up and market-standoff restrictions. This is the first major tranche in SpaceX’s staggered post-IPO unlock schedule, according to the company’s IPO prospectus.

Three words are critical here: “eligible for sale.”

The unlock does not create new shares. SpaceX is not issuing additional stock, and the event does not dilute existing shareholders’ economic ownership or increase the denominator used to calculate earnings per share.

Instead, it transfers control from the lock-up agreement to the shareholder. Someone who was previously forced to hold can now choose whether to hold, sell, lend or transfer eligible shares.

That gives us a better way to think about the event: 

Lock-up pressure depends on eligible shares multiplied by willingness to sell and urgency to sell, divided by the market’s capacity to absorb those shares.

The 911.5 million headline tells us only the first part of that equation.

How the SpaceX Share Unlock Could Expand SPCX’s Public Float

SpaceX sold approximately 638.9 million Class A shares in its IPO after the underwriters exercised their full over-allotment option. The company had approximately 13.18 billion Class A and Class B shares outstanding at the end of June, according to its Q2 2026 Form 10-Q.

This is the unlock’s central contradiction.

It is only about 6.9% of SpaceX’s total economic shares, but it is approximately 143% of the stock initially sold to public investors. The event is therefore modest relative to the entire company, but potentially enormous relative to the stock that currently trades each day.

If all 911.5 million shares became part of the freely traded float, the theoretical float would increase from approximately 638.9 million to 1.55 billion shares. That would raise the tradable portion of SpaceX from roughly 4.8% to 11.8% of total shares.

Actual float may increase by considerably less because eligibility does not mean every holder will immediately move shares into public trading.

Why 911.5 Million SpaceX Shares Are Unlocking, Not 1.37 Billion

Some reports previously suggested that as many as 1.37 billion shares could become available around the first results. That was the maximum possible amount, but it depended on a stock-price condition.

The prospectus allowed an additional 455.8 million shares to unlock if SPCX closed at least 30% above its $135 IPO price on five of the ten trading days ending with the results date.

That required a closing price of at least:

SPCX did not meet that condition. Therefore, the extra 455.8 million shares remain locked, leaving 911.5 million as the relevant August 6 amount.

The first unlock is still substantial, but it is one-third smaller than the maximum release that had been possible.

Who Can Sell SpaceX Shares After the August 6 Unlock?

SpaceX has not published a holder-by-holder list showing exactly how the 911.5 million eligible shares are distributed. The prospectus gives us something more legally useful: the first tranche excludes people and entities considered SpaceX “affiliates” under SEC Rule 144.

Affiliates generally include controlling shareholders, directors, senior executives and others with significant influence over the company.

That means the August 6 unlock should not be read as “Elon Musk and SpaceX management can now dump their shares.” They largely cannot.

The most likely eligible groups are as follows:

The prospectus says shares owned by Musk and holders subject to extended lock-ups represent approximately 7.8 billion shares, or more than 63% of SpaceX’s pre-IPO shares. Musk’s approximately 6.4 billion Class A-equivalent shares are subject to a 366-day lock-up through June 12, 2027, with no early-release provision.

SpaceX’s latest 10-Q also provides useful evidence about management. CFO Bret Johnsen placed the vast majority of his holdings under an extended lock-up and adopted a trading plan covering up to 919,497 shares that expressly does not begin selling until 2027. COO Gwynne Shotwell’s plan covers up to 585,605 shares that remain subject to the prospectus lock-up.

This tells us that the first supply wave is more likely to come from rank-and-file employees, former employees and non-affiliate investors than from Musk or SpaceX’s top management.

Will SpaceX Employees and Early Investors Sell SPCX Below the IPO Price?

This is where the IPO price can become misleading. SPCX is trading at approximately $111.50 in pre-market trading on August 5, around 17.4% below the $135 IPO price. A public investor who bought at the offering price would be sitting on a loss at that level. But pre-IPO holders did not necessarily pay $135.

SpaceX’s filings provide several historical reference points that help illustrate the difference.

The prospectus reported a weighted-average exercise price of $27.65 for outstanding Class A options as of March 31, 2026. At $111.50, those options would have gross intrinsic value of approximately $83.85 per share before taxes and other costs.

The average grant-date fair value of RSUs awarded in 2025 was $54.84. SpaceX also repurchased 14 million employee shares for $522 million in 2025, implying an average price of approximately $37.29.

Meanwhile, SpaceX repurchased about $2.41 billion of shares from eligible current and former xAI employees in early 2026. The prospectus reported 25.4 million shares, implying a price close to $95 per share.

These figures are not the precise tax cost bases of the shares unlocking on August 6. An option strike is not always the holder’s tax basis, and an RSU’s grant-date value can differ from its value when it vests. The company has also not matched these historical awards to the exact unlocked shares.

Even so, the evidence makes one point clear: being below the IPO price does not mean every employee or early investor would be selling at a loss. Many long-standing holders could still be sitting on substantial gains.

Their decision is therefore less likely to be “Should I book a loss?” and more likely to be “How much of my wealth should remain concentrated in one company?”

Why SpaceX Employees May Sell Shares Even if They Remain Bullish

For a long-serving SpaceX employee, company stock may represent years of compensation and a large portion of personal wealth.

Imagine receiving both your monthly salary and your retirement savings from the same source. If something goes wrong, both your income and wealth are affected together. Selling part of an equity position can reduce that concentration without implying a negative view of the company.

SpaceX’s historical repurchase programmes show that employees and early holders have used opportunities to obtain liquidity:

This history suggests that some demand for liquidity exists. It does not suggest that employees want to sell everything.

The more realistic employee behaviour is partial monetisation. A holder might sell enough to cover taxes, purchase a home, reduce debt or diversify, while retaining a meaningful SpaceX position.

Former employees may have a somewhat greater incentive to sell because they no longer receive salaries from SpaceX and may feel less connected to its long-term mission. Still, their individual cost bases and financial circumstances will differ.

Why SpaceX’s Early Investors May Distribute Shares Instead of Selling

Venture capital and growth funds operate differently from employees. A fund may be highly optimistic about SpaceX but still need to return capital to its limited partners, reduce concentration or close an ageing investment vehicle. That makes institutional selling more mechanical and potentially less informative about SpaceX’s future.

Research covering 1,948 IPO lock-up expirations found that venture capital-backed companies experienced larger volume and price effects, with venture investors selling more aggressively than executives and other shareholders. Across the full sample, average trading volume increased permanently by 40%, while the average three-day abnormal return was approximately negative 1.5%, according to a Journal of Finance study by Laura Field and Gordon Hanka.

The average historical price effect was meaningful, but nowhere close to suggesting that every lock-up expiry causes a collapse.

Funds can also distribute shares directly to their own investors instead of selling in the public market. SpaceX’s 10-Q says entities associated with Valor Equity Partners adopted a plan for the potential distribution of up to 225.9 million SpaceX shares to their limited and general partners, subject to conditions.

A distribution changes who owns the shares, but it is not automatically an open-market sale. Some recipients may eventually sell, while others may continue holding.

This is another reason the unlocked-share headline can overstate immediate market supply.

How Much Selling Could the SpaceX Stock Unlock Create?

At the latest pre-market price of $111.50, the 911.5 million eligible shares carry a notional value of approximately $101.6 billion.

The table below models different sell-through rates. It is not a forecast. It simply shows how quickly the numbers become meaningful.

SPCX traded approximately 142.1 million shares on August 4, an unusually active session, according to S&P Global Market Intelligence data published by Stock Analysis.

Even if only 10% of the eligible shares were sold, that would represent more than 91 million shares worth approximately $10.2 billion at the latest pre-market price. On a normal trading day, that could be substantial.

However, sellers are not required to act on August 6. Transactions may be spread across several days, executed through block trades, delayed for tax reasons or postponed until a more attractive price appears.

Markets are priced at the margin. All 911.5 million shares do not need to be sold for the unlock to pressure SPCX. But all 911.5 million shares becoming eligible does not mean pressure of that magnitude will appear.

How the SpaceX Share Unlock Could Affect Short Selling and Short Interest

Short sellers have already built an unusually large position in SPCX.

According to S3 Partners, estimated short interest increased from 23.3 million shares on June 16 to 219.3 million shares by July 29. That represented approximately 34% of SpaceX’s estimated 640 million-share float.

S3 also reported:

• $24.6 billion of SPCX short interest
• Approximately 95% securities-lending utilisation
• Average borrow fees of around 2% to 3%
• New borrow fees closer to 4%

The unlock can affect short sellers in two opposite ways:

1. More shares could make new short positions easier

Short sellers must borrow shares before selling them. When borrowable supply is scarce, fees rise and shares become more difficult to locate.

Unlocked holders can potentially lend shares through brokers even if they do not sell them. That could increase lending supply, reduce borrow costs and make it easier for bearish investors to establish or maintain short positions.

If the estimated short position stayed at 219.3 million shares while the theoretical float expanded from about 640 million to 1.55 billion, short interest as a percentage of float would mechanically fall from roughly 34% to around 14%.

Nothing would have changed about the number of shares sold short. The denominator would simply be larger.

This could reduce the mechanical conditions required for a traditional short squeeze.

2. Existing short sellers may use the unlock to cover

Closing a short position requires buying the stock. Therefore, short covering creates demand.

Some short sellers may have built positions specifically to profit from fear before the unlock. Once the event arrives, they may close those positions, particularly if actual employee and investor selling is smaller than expected.

Research on short selling around IPO lock-up expirations found that short activity increased significantly before the expiry, peaked around one day before the event and declined during the following week. The pattern was especially strong for venture and private-equity-backed IPOs, according to a study published in the Journal of Banking & Finance.

S3 reached a similar conclusion for SPCX, saying a meaningful portion of the short position might look to cover into the August 6 unlock.

Therefore, the event can simultaneously increase the supply available for new shorts and create the liquidity existing shorts need to exit.

High short interest alone does not guarantee a squeeze. A squeeze normally requires rising prices, limited borrow supply and short sellers becoming unwilling or unable to maintain their positions.

SpaceX Lock-Up Expiration Schedule: SPCX Has An Unlock Ladder, Not One Unlock Cliff

August 6 is the first major release, but it is not the final one.

The December amount is larger because the additional 455.8 million-share price trigger was not met in August.

Think of the schedule as a dripping tap rather than a burst pipe. It reduces the risk of every eligible share arriving on one day, but it can keep potential supply hanging over the stock for several months.

That makes the lock-up less likely to produce a clean, instantly identifiable bottom on August 6. The market will have to absorb several further tranches before the 2026 overhang meaningfully clears.

Could the August 6 SpaceX Stock Unlock Help SPCX Find a Bottom?

Yes, logically it could. But the evidence would need to come from how the stock absorbs supply, not merely from the calendar reaching August 6.

At $111.50, SPCX is down approximately 50.6% from its $225.64 intraday post-IPO high. It is also around 17.4% below the IPO price. That suggests at least part of the supply risk has already entered investor expectations.

A durable bottom becomes more plausible when a widely feared event occurs and the stock stops falling despite bad-looking headlines.

The important test is not whether employees sell. It is whether the market can absorb their selling.

The most constructive outcome would not necessarily be an immediate rally. It could be several sessions of unusually high volume while SPCX stops making new lows. That would show that willing sellers are finally meeting buyers prepared to hold the enlarged float.

Conversely, a low-volume decline would also be concerning. It would imply the stock does not require massive insider selling to move lower because demand remains thin.

The strongest bottom confirmation would come from repeated absorption across the August 20, September and later unlocks. One session can be driven by options, short covering or temporary positioning. Several successful supply tests are harder to dismiss.

Our View: The Scarcity Premium is Being Tested

The August 6 unlock is unlikely to produce either of the two extreme outcomes dominating the debate.

It is unlikely that all 911.5 million eligible shares will be sold immediately. Musk and several important strategic holders remain locked, management is largely under extended restrictions, and many employee shareholders may still have substantial gains and strong long-term conviction.

It is equally unrealistic to assume that nobody will sell because SPCX trades below its IPO price. Many employees have far lower economic entry points, former employees may want liquidity, and venture funds can face portfolio or fund-life requirements unrelated to their opinion of SpaceX.

The most probable structure is partial selling from several different groups, combined with share distributions, additional securities lending and selective short covering.

Before the unlock, SPCX’s public-market valuation was being set using less than 5% of the company’s total economic shares. That scarcity helped amplify the early post-IPO surge. August 6 begins removing that scarcity. This does not automatically make SpaceX’s business worth less. It makes the market work harder to prove that investors are willing to support the valuation when more shares are actually available.

That is the real importance of the unlock. It is not simply an insider-selling event. It is SpaceX’s first serious test of price discovery. If SPCX remains stable while volume rises and short positions decline, the feared unlock could help transfer shares from short-term or concentrated holders to investors with a longer time horizon. Such a transfer can form the foundation of a bottom.

If the stock continues falling through successive unlock tranches, the message would be different: the original valuation depended more heavily on limited supply than the market appreciated.

Either way, August 6 will tell investors more about SpaceX’s scarcity premium and shareholder base than it will about rockets, satellites or the company’s operating performance.