On its second day of public trading, SpaceX shares continued their powerful momentum from the debut, pushing the company's market capitalization past the $2.5 trillion mark and officially placing it among the world's top six listed companies by value. This unprecedented super-IPO and its extremely low initial free float are creating a rare battle for shares in the global capital markets.

SpaceX shares closed at $192.46 on Monday, surging nearly 20% and rising more than 42% above the $135 IPO price, adding $412 billion in market value in a single day.

After underwriters fully exercised the over-allotment option (the greenshoe), the company's total fundraising reached $86.2 billion, with net proceeds of $85.7 billion after underwriting fees. This robust market performance has not only directly boosted confidence in the artificial intelligence sector that has driven the market higher this year but has also set the tone for a revaluation of the entire tech giant landscape.

The market's fervent demand has made founder Elon Musk the world's first trillionaire, with his net worth now exceeding three times that of the world's second-wealthiest person, Google co-founder Larry Page. This successful listing has significantly alleviated Wall Street's concerns about the market's ability to absorb a mega-IPO and has paved the way for potential listings later this year by large AI rivals like Anthropic and OpenAI.

Key Dates for Investor Focus

However, amid the strong start and expectations for passive buying, market observers warn of sharply increased volatility in the stock over the coming months. In this capital feast meticulously orchestrated by Wall Street, investors need to pay close attention to two critical dates in July. These events involve not only the collision of massive passive funds with a period of share scarcity but may also hint at a larger merger game behind Musk's business empire.

Retail Frenzy Meets Supportive Macro Backdrop

During the first two trading days, enthusiasm among retail investors to buy the stock was extremely high.

According to data from Vanda Research, the amount of SpaceX stock bought by retail investors over those two days was comparable to the total retail buying across the entire U.S. stock market last week. Max Gokhman, Senior Vice President of Investment Solutions at Franklin Templeton, noted that there was a large pool of investors previously unable to access the investment, making this initial massive demand unsurprising.

Beyond the micro-level influx of funds, the macro geopolitical and liquidity backdrop also provided support for the share price surge.

With the U.S. and Iran announcing an agreement to reopen the Strait of Hormuz and market expectations for potential moderate easing by the Federal Reserve under new Chair Kevin Warsh, both the S&P 500 and Nasdaq 100 indices posted significant gains. Angelo Kourkafas, Senior Global Investment Strategist at Edward Jones, stated that the macro backdrop is becoming more favorable, and falling yields could encourage investors to continue moving out on the risk curve.

July 7th: Index Inclusion Clashes with Minimal Float

As the initial post-listing frenzy cools, the market is approaching its first key trading juncture: July 7th.

Former Wall Street analyst Alexandra Mertz points out that the Class A shares issued in this offering represent only 4.3% of SpaceX's total market capitalization, indicating an extremely tight free float in the initial period.

July 7th is the first trading day after the Independence Day holiday and the 15th trading day post-IPO, the date when the Nasdaq 100 index will formally add SpaceX. According to Bloomberg, calculations by index rebalancing forecaster Intropic show that due to plans by major indices to quickly include the stock, the proportion of freely tradable shares held by passive investors is projected to surge to around 30% after 15 trading days.

At that point, large index funds like those from Vanguard tracking the CRSP index and FTSE Russell must make unconditional passive purchases in the open market based on free-float adjustment mechanisms. Market estimates place the size of this passive buying between $8 billion and $18 billion. With early shareholders still in a lock-up period and unable to sell, the market's free float will be at its lowest point.

Analysts warn that the direct collision of nationwide passive fund buying with historically low share availability, combined with predictions from AI models, could drive the stock price to extreme highs during this period.

Late July: Real Selling Pressure and Institutional Support at the Earnings Lock-Up Expiry

The second crucial date to watch falls on the two business days following the expected second-quarter earnings call in late July. While standard IPO lock-ups typically use simple fixed terms, SpaceX's release schedule is intricately tied to the Q2 earnings meeting.

Market rumors suggest a large-scale release of up to 30% of shares held by early insiders could follow the earnings call. However, Alexandra Mertz clarified that approximately 50% of those early insider shares belong to Musk himself, who, as the founder, is subject to a strict 366-day lock-up. Therefore, the actual potential influx of newly released shares to the public market is only 10% to 15%.

More importantly, the willingness of early major shareholders to sell appears very low.

Prominent investor Ron Baron has explicitly stated he will not sell and plans to add $1 billion in the open market, while BlackRock has publicly expressed interest in buying $5 billion to $10 billion. As Renaissance Capital senior strategist Matt Kennedy noted, the stock has been "priced to near perfection," and when the rocket booster of retail demand falls away and the stock begins to feel the gravitational pull of selling by institutional investors and employees post-lockup, marginal buyers will become critically important.

The Capital Strategy: A $7 Billion Tax Event and Merger Speculation

Behind the meticulously planned listing, Wall Street is closely tracking Musk's personal financial timeline.

Musk must exercise stock options from his 2018 Tesla compensation package by August 15th of this year, triggering a massive personal tax event estimated at around $7 billion. The higher the share price of his assets before this key date, the more favorable it is for net share settlement or using shares as collateral for loans.

Market analysts have sketched out a "Goldilocks scenario": a potential announcement of a stock-for-stock "merger of equals" between SpaceX and Tesla during the window between the index-driven price peak around July 7th and the influx of new shares around the late July lock-up expiry. Such a public market arbitrage mechanism could perfectly alleviate Musk's tax funding pressure.

This speculation seems to find clues in SpaceX's underwriter list. The IPO unusually included Charles Schwab, Morgan Stanley, and JPMorgan Chase as core underwriters. Market observers believe granting these institutions, which previously voted against the Tesla pay package, exceptionally lucrative IPO underwriting shares might be to secure their favorable votes in a potential merger vote at Tesla's November shareholder meeting.

Furthermore, the governance structure outlined in SpaceX's prospectus provides logical support for this potential merger.

SpaceX's Class B shares carry 10x super-voting rights, and all shareholder litigation must be forced into private arbitration, creating a perfect "founder defense fortress." Analysis suggests that folding Tesla into SpaceX's legal structure could be the ultimate capital solution to fundamentally protect Musk's business empire from activist investors and local court interference.