---
title: "Memory Chips Fall in Night Session, MU Down Nearly 4%, SNDK Down Nearly 4%, WDC Down Over 3%"
type: "News"
locale: "en"
url: "https://longbridge.com/en/news/291862734.md"
description: "Memory chip sector declined collectively in Monday (July 6) night session, with MU and SNDK down nearly 4%, WDC down over 3%, STX down 2.45%. Derivative ETFs diverged, MUD up 3.98%, SNDQ up 7.95%."
datetime: "2026-07-07T01:46:49.000Z"
locales:
  - [zh-CN](https://longbridge.com/zh-CN/news/291862734.md)
  - [en](https://longbridge.com/en/news/291862734.md)
  - [zh-HK](https://longbridge.com/zh-HK/news/291862734.md)
---

# Memory Chips Fall in Night Session, MU Down Nearly 4%, SNDK Down Nearly 4%, WDC Down Over 3%

The memory chip sector weakened collectively during Monday (July 6) night session, with mainstream stocks generally declining. As of press time, Micron Technology (MU.US) fell nearly 4% in night trading, SanDisk (SNDK.US) dropped nearly 4%, Western Digital (WDC.US) declined over 3%, Seagate Technology (STX.US) fell 2.45%, and Everspin Technologies (MRAM.US) dropped 0.61%.

The sector faced overall pressure, with Micron Technology quoted at **$946.69** in night trading, down **3.87%** from the previous closing price of $984.75, with night session turnover of $345 million. SanDisk traded at **$1,676.84**, down **3.87%**, with turnover of $153 million. Western Digital was at **$559.00**, down **3.20%**, with turnover of $7.62 million. Seagate Technology traded at $847.01, down 2.45%.

On the derivative ETF front, ProShares Ultra Memory Stocks (MUU.US) fell 7.91% in night trading to $699.85; ProShares UltraShort Memory Stocks (MUD.US) bucked the trend with a gain of **3.98%** to $11.76. Among other related stocks, SNXX.US dropped 7.69%, while SNDQ.US rose **7.95%**.

### 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)

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- [Western Digital Corporation $WDC Shares Purchased by Kathmere Capital Management LLC](https://longbridge.com/en/news/291785935.md)
- [MU, SNDK, WDC: Hedge Funds Spent the Last Four Weeks Dumping Chip Stocks](https://longbridge.com/en/news/291836121.md)
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