---
title: "Why Is the Stock Market Up Today, 10/21/26?"
type: "News"
locale: "en"
url: "https://longbridge.com/en/news/302595438.md"
description: "US markets rose on Oct 21, 2026, driven by strong tech earnings. SpaceX reported Q3 revenue of $14.6 billion, beating estimates, while CEO Elon Musk announced a potential merger committee with Tesla. Super Micro Computer raised its guidance, boosting semiconductor stocks like Nvidia and AMD. The S&P 500 and Nasdaq 100 gained 0.68% and 1.31%, respectively, with financials also rising ahead of upcoming jobless claims data."
datetime: "2026-10-21T16:50:09.000Z"
locales:
  - [zh-CN](https://longbridge.com/zh-CN/news/302595438.md)
  - [en](https://longbridge.com/en/news/302595438.md)
  - [zh-HK](https://longbridge.com/zh-HK/news/302595438.md)
generator: "portal-rs"
---

# Why Is the Stock Market Up Today, 10/21/26?

Both the S&P 500 (SPX) and the Nasdaq 100 (NDX) are trading higher on Wednesday and are up by 0.68% and 1.31%, respectively. Earnings from SpaceX (SPCX) and preliminary guidance from Super Micro Computer (SMCI) have boosted sentiment across the tech sector. More results are on the way, as Meta Platforms (META), Tesla (TSLA), and IBM (IBM) are set to report after the closing bell.

SPCX stock rallied after the space exploration company reported third-quarter revenue of $14.6 billion, up 161% year-over-year and above the analyst estimate of $12.72 billion. In addition, CEO Elon Musk said SpaceX and Tesla's boards have formed a committee to discuss a potential merger between the two companies.

## **Semiconductor Stocks Rise on Strong Server Demand**

Meanwhile, Super Micro's guidance helped drive a rally in semiconductor stocks, with Nvidia (NVDA), AMD (AMD), and Dell (DELL) in the green. The server maker guided for revenue of $18.5 to $19.5 billion in the third quarter, up from its previous estimate of $14.5 to $15.5 billion. Super Micro also expects a gross margin of 12% to 12.5%, up from its previous outlook of 10.4% to 10.8%.

Elsewhere, the financial sector is also in the green, highlighted by gains from Goldman Sachs (GS) and American Express (AXP). Looking ahead, the Department of Labor will publish initial jobless claims data tomorrow morning.

### Related Stocks

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- [SMCI.US](https://longbridge.com/en/quote/SMCI.US.md)
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- [AMDC.US](https://longbridge.com/en/quote/AMDC.US.md)
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## Related News & Research

- [SpaceX Bulls Get Louder After Q3 Earnings Print, But One Firm Flags $475B Funding Gap](https://longbridge.com/en/news/302596793.md)
- [1,116 Advanced Micro Devices, Inc. $AMD Shares Acquired by RDA Financial Network](https://longbridge.com/en/news/302084836.md)
- [Advanced Micro Devices, Inc. $AMD Position Lessened by Warwick Investment Management Inc.](https://longbridge.com/en/news/302389789.md)
- [BREAKINGVIEWS-SpaceX is stuck in a difficult adolescence](https://longbridge.com/en/news/302467771.md)
- [SpaceX earnings due amid AI revenue surge, Tesla merger buzz](https://longbridge.com/en/news/302134922.md)

---
> **Disclaimer: This article is for reference only and does not constitute any investment advice.**