WSJ Your Money Briefing What’s News in Markets: Memory Chips, Corporate Drama, Mega IPO
Dec 20, 2025
Micron's earnings reveal how AI is driving a memory-chip shortage and boosting prices. Corporate drama unfolds at Warner Bros. Discovery, where a hostile bid from Paramount Skydance is rejected. Lululemon faces a proxy fight as activist investors push for a new CEO. Meanwhile, Medline makes waves with a stunning IPO, raising $6 billion and jumping 41% on its first day. This week's market moves give a glimpse into the shifting dynamics shaping investor strategies.
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Holiday Rally Hopes Meet AI Jitters
- Stocks sought a holiday-season Santa Claus rally amid mixed weekly index performance.
- Economic uncertainty and AI jitters kept gains limited across major indexes.
AI Memory Chip Shortage Powers Micron
- Micron's strong quarter shows AI is creating a sustained shortage for memory chips.
- Rising AI demand is pushing prices and boosting semiconductor revenues.
Warner Rejects Paramount's Hostile Bid
- Warner Bros. Discovery rejected Paramount's hostile $77.9 billion bid and urged shareholders to oppose it.
- Warner cited concerns about the credibility and backing of the Paramount offer.