Quick Answer

Most of the attention around an IPO focuses on the offering price and the first-day move. But what happens in the weeks and months after listing is just as important for investors - and far less discussed. SpaceX (SPCX) debuted on Nasdaq on June 12, 2026, closing up 19% at $160.95 from its $135 IPO price after touching an intraday high of $176.52 [1]. Three days later it trades at $171.72 [2]. The next meaningful events - index inclusion, earnings releases, and lock-up expiry - will each create their own price pressure. Here's how to think about all of them.

The First-Day Pop: What It Means and Doesn't Mean

A first-day price gain sounds like free money for IPO subscribers. It isn't that simple.

The first-day pop reflects the gap between the IPO price - set by underwriters the night before based on institutional book demand - and what open-market buyers are willing to pay on day one. A large first-day gain can mean the IPO was underpriced, that retail enthusiasm drove buying above fundamental value, or both.

SpaceX opened at $150 (11% above the $135 IPO price), hit $176.52 intraday, and closed at $160.95. That 19% close-to-open performance sounds impressive, but $250 billion in investor demand chased $75 billion in supply [3] - the oversubscription itself guaranteed a first-day pop. Investors who bought at $176 intraday are currently underwater. First-day price action is volatile and not predictive of medium-term returns. Roughly $15 billion of the SpaceX raise came from retail investors - an unusually high 30% retail allocation - and retail buyers tend to be the most active sellers in the days following listing [3].

The Float Problem: Why a Small Free Float Creates Volatility

Float is the percentage of total shares available for public trading. SpaceX went public with approximately a 4% float - meaning 96% of shares are held by insiders, employees, early investors, and Elon Musk (who controls 42% of equity and 85% of votes) [3].

A tight float amplifies price swings in both directions. A relatively small buy or sell order moves the price significantly when there are few shares available to absorb it. It also creates a technical setup where index funds forced to buy the stock have to compete for a limited supply - driving prices up mechanically regardless of fundamental valuation.

Index Inclusion: The Structural Buyer Nobody Talks About

When a company is large enough to qualify for inclusion in major stock indices, passive funds - ETFs and index mutual funds that track those indices - are required to buy its shares to match their benchmarks. This is price-insensitive, forced buying.

MSCI initiated early inclusion of SPCX on June 13, 2026 - the day after listing - given SpaceX's position as one of the 10 largest constituents of the MSCI World and MSCI ACWI indices at its post-debut valuation [4]. Analysts estimate $15 to $20 trillion in passive fund assets need to adjust their weights to include SPCX [4].

Nasdaq also changed its fast-entry rules in May 2026: companies with market caps exceeding the 40 largest Nasdaq 100 constituents qualify for index inclusion weeks after listing rather than waiting for a quarterly review. SpaceX qualifies by a wide margin, meaning Nasdaq 100 inclusion and the associated passive fund buying is coming soon [5].

Index inclusion doesn't guarantee price appreciation - it guarantees buying. The actual price impact depends on how much supply is available to meet that demand. With SPCX's 4% float, the math is straightforward: lots of forced buyers, very few available shares.

The Lock-Up Period: The Event Most Retail Buyers Miss

A lock-up period is a contractual restriction preventing insiders - founders, employees, early investors - from selling their shares for a set period after the IPO. The standard duration is 180 days, designed to prevent a mass insider sell-off from crashing the price before the market has time to establish fair value.

SpaceX's lock-up structure is non-standard. Rather than a single 180-day cliff, SpaceX structured a multi-stage release - a response to the new Nasdaq fast-entry rules that incentivize companies to ramp their float sooner after listing [5]. The primary lock-up expiry falls in December 2026 [4].

When lock-ups expire, the supply of sellable shares increases dramatically. Historically, approximately 60% of stocks decline around lock-up expiry as insider selling adds supply that open-market demand must absorb [6]. The 40% that don't decline typically have strong fundamental momentum that absorbs the new supply. For SPCX, the December lock-up expiry is the most significant near-term event for existing holders to track.

Earnings and Analyst Coverage: The Quarterly Cycle Begins

Once public, companies report earnings quarterly. For SpaceX, the first earnings report is expected September 2, 2026 [7]. This matters for several reasons.

Analysts who were restricted from publishing during the IPO process typically initiate coverage two to four weeks after listing. Their price targets create a reference frame for the market. Current analyst estimates range from $63 (low) to $227 (high) [2] - an unusually wide spread reflecting genuine disagreement about SpaceX's long-term earnings power, particularly given its Q1 2026 net loss of $4.28 billion driven largely by xAI capital expenditure [3].

The first earnings print will be the first hard data point on whether SpaceX's post-IPO revenue trajectory supports its $2 trillion market cap. Starlink's $11.39 billion in 2025 revenue and 10.3 million paid subscribers are the core business metrics to watch [8].

What This Means for bSPCX Holders

BitMart's bSPCX tracks SPCX at Nasdaq-referenced prices with no lock-up on the BitMart side - holders can trade at any time on BitMart's secondary market. The underlying corporate events still matter:

Index inclusion buying creates structural price support in the near term as passive funds accumulate
The December 2026 lock-up expiry is a known risk event - historically a period of elevated volatility for the underlying stock
The September 2 earnings report is the next fundamental catalyst - a stronger-than-expected Starlink growth number could drive a significant move in either direction

Trade bSPCX on BitMart's secondary market or monitor future IPOPrime offerings at bitmart.com/en-US/ipoprime/space-x.

Frequently Asked Questions

Why do some stocks drop after a strong IPO pop?The IPO pop reflects excess demand from buyers who couldn't get shares at the offering price. Once that initial demand is satisfied, buying pressure can ease and early flippers sell. Stocks that pop strongly on day one frequently trade below their first-day close within the first month.

What is the quiet period after an IPO?For approximately 25-40 days after listing, investment banks that underwrite the IPO are restricted from publishing research on the company. Once this period ends, a wave of analyst initiations typically moves the stock as price targets enter the market.

Is a large first-day gain good or bad for long-term investors?Mixed evidence. A very large pop (above 30%) can signal the IPO was underpriced, meaning institutional buyers captured value that should have gone to the company. It also attracts momentum buyers who may sell quickly, creating post-listing volatility. Moderate first-day gains with strong fundamental backing tend to produce better long-term outcomes.

When is SpaceX's lock-up expiry?The primary lock-up expiry is December 2026, approximately 180 days from the June 12 listing [4]. SpaceX's structure is multi-stage rather than a single cliff, so some insider selling may occur earlier.

Does index inclusion guarantee that the stock price goes up?No. Index inclusion guarantees forced buying from passive funds, which is a tailwind. Whether that buying exceeds selling from other participants depends on market conditions and the stock's overall supply-demand balance.

Key Takeaways

First-day IPO performance is driven by supply-demand imbalance, not fundamental value - it is not predictive of medium-term returns
A tight float (SpaceX: ~4%) amplifies post-IPO volatility in both directions
Index inclusion forces passive fund buying regardless of price - MSCI inclusion for SPCX began June 13, with Nasdaq 100 inclusion to follow; analysts estimate $15-20 trillion in passive assets need to adjust
Lock-up expiry (December 2026 for SPCX) is the most significant near-term risk event - historically 60% of stocks decline in this window
The first earnings report (September 2, 2026) is the first fundamental test of whether SpaceX's valuation holds
bSPCX holders on BitMart face no lock-up on the platform side but should track these corporate events as they affect the underlying SPCX price

Risk Warning: Stock prices can and do fall after IPO listing. Past first-day performance does not predict future returns. This content is for educational purposes only and does not constitute financial advice. Trading bSPCX involves risk of loss.