SpaceX Joins the WisdomTree Space Economy ETF (WSPC) — Weighting, IPO Impact, and Market Context

Listing Exchanges and European Retail Access

WSPC initially listed on Xetra (Germany), Borsa Italiana (Italy), Euronext Paris (France), and SIX Swiss Exchange (Switzerland) on June 4, 2026, and listed on the London Stock Exchange on June 5, 2026 . It also trades on Euronext’s ETF Plus market under Euronext Code NSCITWSPC005, providing passport access to Amsterdam and the broader Euronext network . As a UCITS-compliant ETF, WSPC is passported for retail sale across the European Economic Area, covering at least seven countries out of the box: Germany, Italy, France, Switzerland, the UK, and Euronext-linked markets .

SpaceX Addition — Weighting and Phased Increase

SpaceX will be added to WSPC on June 29, 2026, with an initial weighting of 5.5% . Under the index methodology, SpaceX is expected to qualify for a target weighting in excess of 10%, with further increases expected as liquidity develops over time .

The phased approach is standard for the index: new and less-liquid positions are capped initially, then gradually increased as trading volumes and float meet certain thresholds . Given SpaceX’s enormous market cap — which surged to approximately $2.2 trillion in after-hours trading on IPO day — it would naturally command a significantly higher weight absent liquidity constraints . At listing, SpaceX had only a 4% float, making price discovery and liquidity management a key consideration for index providers .

SpaceX IPO — Record-Breaking Context

SpaceX’s IPO on June 12, 2026, was the largest in history, more than doubling Saudi Aramco's 2019 record .

Important note on the $85 billion figure: The initial question referenced "over $85 billion raised." The best available evidence from the NYT, CNBC, Business Standard, The Guardian, and Fortune consistently reports $75 billion at the fixed price, with the total potentially reaching $86.25 billion if underwriters fully exercised their greenshoe option on the 555.6 million share base . The Wikipedia article on the SpaceX IPO reports $86 billion, which likely includes the greenshoe exercise .

Institutional Purchases — ARK Invest and BlackRock

ARK Invest: On IPO day (June 12), Cathie Wood’s ARK Invest purchased 3,291,184 shares of SpaceX for approximately $444.3 million across four of its ETFs: ARK Innovation ETF (ARKK), ARK Autonomous Technology & Robotics ETF (ARKQ), ARK Next Generation Internet ETF (ARKW), and ARK Space Exploration & Innovation ETF (ARKX) . SpaceX became the largest holding in the ARK Venture Fund at 11.38% of net assets . ARK simultaneously sold positions in AMD (~$39.3 million), Tesla, Robinhood, and Teradyne to fund the purchases, and also reduced its Rocket Lab position — a company SpaceX’s own S-1 filing named as a direct competitor .

BlackRock: The Wall Street Journal reported that BlackRock sought to buy at least $5 billion in SpaceX IPO shares . However, the available search results do not confirm the final allocation or subsequent secondary market purchases. As the world’s largest asset manager, BlackRock likely participated, but no confirmed transaction amount is in the current evidence .

Index Inclusion Decisions — MSCI, FTSE Russell, S&P

WisdomTree Index: SpaceX was added to the proprietary WisdomTree Space Economy UCITS Index as of June 29, 2026, which is the index the WSPC ETF tracks .

MSCI: No specific MSCI inclusion announcement was found in the available sources. As a newly public company, SpaceX would need to meet MSCI’s minimum float-adjusted market cap and liquidity criteria at the next semi-annual index review (typically May and November). At its size, inclusion is highly likely in due course, though the low float (4%) could delay full inclusion.

FTSE Russell: Similarly, no specific FTSE Russell announcement was found. FTSE Russell typically adds large IPOs on a fast-entry basis if they meet size thresholds. At a ~$1.77 trillion market cap, SpaceX would qualify immediately for FTSE US indexes.

S&P: No confirmed announcement was found in the current evidence. S&P Dow Jones Indices typically adds companies to the S&P 500 at quarterly rebalancings. SpaceX would need to meet profitability requirements (four consecutive quarters of positive GAAP earnings), which may be a hurdle given the company reported a $4.28 billion net loss in Q1 2026 alone, with an accumulated deficit of $41.3 billion .

Broader Market Context

• SpaceX’s IPO was the most anticipated listing in years, drawing comparisons to Saudi Aramco ($29.4B), Alibaba ($25B), and Nvidia’s growth trajectory . Demand reportedly exceeded $250 billion, roughly 3.5 to 4 times the $75 billion being raised .
• The stock gained ~30% from IPO price to intraday high on debut, briefly pushing Elon Musk’s 38% stake past $800 billion and making him the world’s first trillionaire on paper .
• The WisdomTree ETF was launched just eight days before the SpaceX IPO (June 4), positioning it as a pure-play vehicle for the emerging space economy theme .
• ARK’s $444M bet on day one signals conviction that SpaceX will dominate the space economy theme for years, despite selling off related positions like Rocket Lab, which SpaceX’s S-1 named as a direct competitor .
• Further index inclusion by MSCI, FTSE, and S&P would force billions in additional passive flows into SpaceX shares at subsequent rebalancing dates, though the timeline remains uncertain due to float and profitability constraints.