How will the main index of the U.S. stock market S&amp;P 500 look like if SpaceX, OpenAI and Anthropic, which are preparing the most anticipated IPO of the year, are added to it? This hypothetical question <a href="https://seekingalpha.com/news/4579760-what-would-the-sp-looks-like-with-spacex-openai-and-anthropic">was asked by the</a> editorial staff of Seeking Alpha. Here is the conclusion it came to:

Let's imagine that SpaceX, OpenAI and Anthropic entered the S&amp;P 500. What risks would this create?

X-Energy

Honeywell International Inc.

SpaceX admitted that the project of space data centers, for the financing of which its IPO is being prepared, may turn out to be unprofitable. Revolut will seek to achieve capitalization of $200 billion on the listing, waiting at least two years. Anthropic has overtaken OpenAI in value for the first time. The main events on the IPO market during the week are in our selection.

SpaceX, Revolut and Anthropic's $1 trillion valuation: what's important about the IPO by April 26

Tesla, Inc.

On Monday, April 27, the trial of Elon Musk's lawsuit against OpenAI and its key investor Microsoft will begin in a California court. The conflict between the two co-founders of the AI company - Musk and its head Sam Altman - could affect not only the future of the startup itself, but also the balance of power in the entire AI industry, Bloomberg <a href="https://www.bloomberg.com/news/articles/2026-04-24/why-did-elon-musk-and-sam-altman-fall-out-what-is-their-court-case-about">believes</a>. If Musk wins, it could cost OpenAI a significant sum and lead to a major overhaul of the loss-making AI giant. But regardless of the outcome, the case has already created uncertainty around OpenAI's business as it confronts increasing competition and prepares to go public, the agency notes.

Three major questions about Musk and Altman's litigation. Their conflict is going to court

Elon Musk has used SpaceX, which is now preparing for an IPO, for two decades as a kind of piggy bank, according to an <a href="https://www.nytimes.com/2026/04/24/technology/how-elon-musk-used-spacex-to-benefit-himself-and-his-businesses.html">investigation by</a> The New York Times. According to the publication, the space company at least three times lent the billionaire money under "exceptionally favorable terms" and supported related businesses when they faced financial difficulties.

How SpaceX became a piggy bank for Musk and his ventures - NYT investigation

NIKE, Inc.

Warner Bros. Discovery, Inc.

Paramount Skydance Corporation

Israel and Lebanon extend a U.S.-brokered truce. Nike will cut staff for the sake of automation. And SpaceX attracted $20 billion as a loan before potentially the largest IPO in history. About these and other topics - in our review of key events for the morning of April 24.

Top story for the morning: SpaceX borrowed $20 billion, Nike to lay off 1,400 people for automation

SK hynix Inc.

lululemon athletica inc.

SoftBank Corp.

Meta Platforms, Inc.

Core Scientific, Inc.

SK Hynix reported record profits amid demand for memory for AI servers, although revenue fell short of expectations. Core Scientific raised $3.3 billion through high-yield bonds to build data centers amid capacity, chip and energy shortages. These and other topics are in our roundup of key events for the morning of April 23.

Highlights for the morning: SK Hynix reports record profits, Lululemon changes its CEO

Tesla managed to surprise Wall Street pleasantly with its first quarter <a href="https://assets-ir.tesla.com/tesla-contents/IR/TSLA-Q1-2026-Update.pdf">report</a>: its earnings exceeded forecasts and its cash flow was not negative, contrary to expectations. After the publication of the results, Tesla shares soared almost 4% in extended trading. At the same time, they added less than 0.3% in the main session, while the Nasdaq and S&amp;P 500 indices rose more than 1% each.

Tesla shares rose 4% after reporting. What made investors happy?

Elon Musk's SpaceX plans to create space data processing centers for artificial intelligence, as well as - the creation of human settlements on the Moon and Mars are based on untested technologies and may not be commercially viable. The company warned of this in a confidential filing with the U.S. Securities and Exchange Commission (SEC) ahead of going public. The document <a href="https://www.reuters.com/world/spacex-says-unproven-ai-space-data-centers-may-not-be-commercially-viable-filing-2026-04-21/">was reviewed by</a> Reuters.

SpaceX warned of risk of 'non-viability' of AI data centers in space - Reuters

The penalty if SpaceX backs out of the deal would be one of the largest in history

SpaceX has won the right to buy Anthropic's rival startup Cursor for $60 billion

US President Donald Trump <a href="https://oninvest.com/article/tramp-prodlil-peremirie-s-iranom-cto-sovetuet-ubs">has extended the</a> ceasefire with Iran, although the negotiations have actually broken down, and the blockade and tensions around the Strait of Hormuz remain. Against this background, the White House is considering the possibility of providing financial support to the UAE, whose economy is suffering a serious blow from the war. These and other topics are covered in our review of key events by the morning of April 22.

Main by morning: U.S. explores UAE aid, external ushers hit by Anthropic's new model

Billionaire Elon Musk spent $1.4 billion last year to build up a stake in his aerospace company SpaceX by buying shares from current and former employees, Reuters <a href="https://www.reuters.com/technology/musk-bought-14-billion-spacex-shares-last-year-information-reports-2026-04-21/">reported</a>, citing The Information. The deals were done through Musk's trust fund, the article said.

Elon Musk bought $1.4 billion worth of SpaceX stock ahead of the company's IPO - The Information

Apple Inc.

Amazon.com, Inc.

NVIDIA Corporation

Apple <a href="https://oninvest.com/article/v-sfere-ii-vse-gotovo-dla-peredaci-vlasti-cto-smena-gendirektora-znacit-dla-apple">announced</a> that CEO Tim Cook will step down on September 1 after more than a decade at the helm of the company. Jeff Bezos-backed startup Project Prometheus is close to raising $10 billion at a valuation of $38 billion. These and other topics are covered in our review of key events for the morning of April 21.