---
title: "Memory Chips Surge in Overnight Session: Micron Up Over 3%, SanDisk Rises Nearly 5%"
type: "News"
locale: "en"
url: "https://longbridge.com/en/news/294500061.md"
description: "The memory chip sector rallied collectively during the overnight session. Micron Technology rose over 3% to $904.20, while SanDisk surged nearly 5% to approach $1,334. Western Digital and Seagate Technology followed suit, signaling a significant 回暖 in sector sentiment."
datetime: "2026-07-31T10:46:34.000Z"
locales:
  - [zh-CN](https://longbridge.com/zh-CN/news/294500061.md)
  - [en](https://longbridge.com/en/news/294500061.md)
  - [zh-HK](https://longbridge.com/zh-HK/news/294500061.md)
---

# Memory Chips Surge in Overnight Session: Micron Up Over 3%, SanDisk Rises Nearly 5%

The memory chip sector showed a broad-based rally during the overnight session, with mainstream stocks advancing collectively. As of press time, Micron Technology (MU.US) was trading at $904.20 in the overnight session, up 3.38% from the previous close. The stock hit a high of $933.70 during the session, with active trading volume reflecting strong market expectations for a recovery in the memory cycle.

SanDisk (SNDK.US) demonstrated even stronger momentum, surging 4.21% to $1,333.90 in the overnight session, reaching an intraday high of $1,427.98. Western Digital (WDC.US) and Seagate Technology (STX.US) followed closely, rising 3.93% and 2.84% respectively in the overnight session to close at $554.00 and $875.85. MRAM.US also recorded a gain of 2.49% in the overnight session, trading at $14.82.

On the derivative front, MUU.US, MUD.US, SNXX.US, and SNDQ.US also posted varying degrees of gains during the overnight session, with SNXX.US jumping 8.68%. Overall, the memory chip sector saw significant capital inflows during the overnight hours, with investors remaining optimistic about improvements in industry fundamentals.

### Related Stocks

- [MU.US](https://longbridge.com/en/quote/MU.US.md)
- [SNDK.US](https://longbridge.com/en/quote/SNDK.US.md)
- [WDC.US](https://longbridge.com/en/quote/WDC.US.md)
- [STX.US](https://longbridge.com/en/quote/STX.US.md)
- [MRAM.US](https://longbridge.com/en/quote/MRAM.US.md)

## Related News & Research

- [$1000 Invested In Western Digital 20 Years Ago Would Be Worth This Much Today](https://longbridge.com/en/news/296395604.md)
- [Micron Stock Is Surging Toward $1,000 Again. Can MU Keep Climbing?](https://longbridge.com/en/news/296107115.md)
- [‘It’s Not That Simple,’ Says Investor About Micron Stock](https://longbridge.com/en/news/296022896.md)
- [Seagate EVP, Chief Commercial Officer Ban Seng Teh disposes of 7,361 shares worth $6.78 million](https://longbridge.com/en/news/295975562.md)
- [Micron Upgraded to Buy on the Claim Memory Stopped Being Cyclical](https://longbridge.com/en/news/295956390.md)