The "Greenshoe" That Accelerated the Space Race

SpaceX not only broke all records with its initial public offering on June 12, 2026, but also activated on Monday the over-allotment clause known as "greenshoe" in Wall Street financial jargon, placing 83.3 million additional shares and raising its total proceeds to approximately $85.7 billion.

What is a "greenshoe"? This financial mechanism allows underwriting banks to sell an extra package of shares when demand exceeds initial forecasts. The name comes from the Green Shoe Manufacturing Company, which first used this option in 1960. Among the placement entities are Goldman Sachs, Morgan Stanley, Bank of America, Citigroup, and J.P. Morgan, while Santander, ING, and Société Générale act as co-managers.

SpaceX shares rose 19.6% from Friday's closing, surpassing $192.50 per share. From the initial target price of $135 at its debut, the stock has accumulated a 42.6% increase.

Source: Infobae, data as of June 15, 2026. SpaceX reached up to $2.52 trillion according to Monday's trading.

Elon Musk: The First "Trillionaire" in History

SpaceX's stock market debut converted Elon Musk into the first trillionaire in history with an estimated net worth of $1.1 trillion. The entrepreneur did not sell any of his shares in the public offering, which immediately became worth nearly $900 billion.

It is estimated that more than 4,400 SpaceX employees became millionaires thanks to the stock options they held, an unprecedented number for an initial public offering.

OpenAI and Anthropic: Next in Line

The earthquake caused by SpaceX opened a fundamental question on Wall Street: are we witnessing the birth of a new generation of tech giants capable of redefining Silicon Valley?

According to The New York Times, Anthropic confidentially filed its documentation with the SEC on June 1, 2026, while OpenAI did the same a week later. This procedure allows regulators to review financial information without yet exposing details to the market.

Bubble or Revolution?

Market analysts calculate that SpaceX, OpenAI, and Anthropic could capture around $200 billion combined if they place about 5% of their capital. The figure exceeds everything raised by major U.S. IPOs between 2022 and early 2026.

Ali Ghodsi, CEO of Databricks, warned days before SpaceX's IPO that 2026 could become "a terrible year to go public" due to fierce competition for liquidity.

Political criticism also arrived. Democratic Senator Elizabeth Warren harshly criticized SpaceX's debut and questioned the projections justifying such valuations. Her colleague Bernie Sanders stated: "If this isn't an example of oligarchy, I don't know what is."

SpaceX's debut occurred in a favorable context: the announcement of a peace agreement between the United States and Iran sparked euphoria in markets, with Brent crude falling more than 4% after the reopening of the Strait of Hormuz.

U.S. indices rose up to 3% and reached new highs. Argentine stocks gained up to 6%, though oil companies fell. Bonds rose 0.6% and Argentina's country risk fell to 435 basis points, its lowest level in more than eight years.