Memory Stocks Plunge as Democratic Control of Congress Sparks AI Regulation Fears

Key points

• SanDisk shares fell 18.7% to $844.29, extending a previous 9% drop on November 4. Micron Technology fell 14.7% to $679.54, and Western Digital dropped 14.8% to $276.11.
• Arizona Representative Yassamin Ansari called for a 'pause on advanced AI development' and a ban on artificial superintelligence, signaling potential regulatory shifts under the new Democratic majority in Congress.
• SanDisk reported Q1 FY2027 revenue of $11.03 billion, beating estimates for the sixth consecutive quarter, with data center revenue reaching $4.80 billion, up 61% sequentially.
• Micron disclosed that over 75% of its fiscal 2027 shipments are committed through 26 strategic customer agreements covering DRAM and NAND through 2030.
• Western Digital and Seagate Technology have long-term supply agreements extending through 2030 and 2028, respectively, which may buffer them against short-term demand shocks compared to pure-play NAND firms.

Background

The memory sector has experienced volatility since October 2026. In October, stocks fell due to fears of intensified Chinese competition in DRAM and NAND markets. On November 4, SanDisk dropped 9% despite strong earnings, citing concerns over a potential data center moratorium in Texas and conservative forecasts from joint venture partner Kioxia. The current selloff represents a continuation of this trend, now amplified by federal political developments.

How outlets are covering it

Outlets diverge on the severity of the regulatory threat. Yahoo Finance and Investing.com emphasize the immediate market panic, noting that SanDisk’s decline is steepest due to its pure-play NAND focus and high exposure to U.S. data center spending. Investing.com highlights bearish analyst actions, including a downgrade from Fox Advisors and a price target cut by Wells Fargo, as contributing to the sell-off. Conversely, Futurum Group CEO Daniel Newman, cited by Yahoo Finance, argues that demand outside the U.S. is sufficient to offset any slowdown in domestic buildouts, suggesting forecasts remain intact. Seeking Alpha’s 'The Curious Analyst' maintains a 'Strong Buy' rating for SanDisk, citing a low PEG ratio of 0.12x and strong long-term commitments, viewing the current dip as a buying opportunity rather than a fundamental shift. Moomoo reports the broad sector decline but offers no specific analytical perspective, focusing on the price movements of Seagate and other peers.

Why it matters

The reaction highlights the sensitivity of AI infrastructure stocks to political and regulatory changes. As Democrats gain full control of Congress, the potential for stricter oversight on data center power usage and environmental standards could directly impact the capital expenditure cycles that drive revenue for memory makers. The divergence in stock performance between pure-play NAND firms and diversified memory or hard drive makers suggests that long-term contracts and global demand may offer some insulation against U.S.-specific regulatory risks.

What to watch

Investors will watch for legislative action from the new Democratic Congress regarding AI development and data center regulations. The next Federal Reserve meeting is scheduled for December 8-9, but no monetary catalyst is expected to offset political uncertainty in the near term. SanDisk’s upcoming 8-for-1 stock split and the resolution of the AI pause debate will be key factors in determining whether the sector stabilizes or continues to decline.