Broadcom +3.7%, TeraWulf +4.9% on AI deal wave as S&P 500 recovers

For AI practitioners and infrastructure builders, Monday's twin announcements were more than market noise: they validated the notion that the AI supply chain is maturing into multi-decade commitments. Broadcom's endurance as Apple's custom silicon partner and TeraWulf's aggressive bet on high-density compute for Anthropic signal that the physical foundation of generative AI is being locked in far beyond near-term hype cycles. With SK Hynix poised to test $28 billion in fresh capital this week, the rebound raises expectations that institutional money will continue to flow into the hardware that underpins model training and inference.

Artificial intelligence stocks staged a powerful rebound on Monday, July 6, 2026, lifting the S&P 500 to within 1% of its all-time high and demonstrating the sector's persistent influence over broader equity markets. The S&P 500 rose 0.7%, while the Nasdaq Composite surged 1.1%. Meanwhile, the Dow Jones Industrial Average added 155 points, or 0.3%, to set a new record, powered in part by gains in AI-related names. The rally was concentrated in AI: most stocks in the S&P 500 actually fell on the day, underscoring a market increasingly dominated by a handful of AI titans rather than broad participation.

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The S&P 500 rose 0.7%, while the Nasdaq Composite surged 1.1%.

Broadcom led the charge, gaining 3.7% after announcing long-term agreements to supply silicon products to Apple. The announcement not only reversed two consecutive sessions of over 2% losses for Broadcom ahead of the Fourth of July holiday, but also reinforced confidence that the AI infrastructure buildout—especially in custom silicon—remains on a strong growth trajectory. This deal highlights deeper vertical integration and long-term commitment between chip designers and platform giants, a pattern that has become central to the AI supply chain.

In parallel, TeraWulf climbed 4.9% after revealing a 20-year data center deal with Anthropic, a leading AI startup behind the Claude model family. This landmark energy-infrastructure contract signals that dedicated, high-performance computing capacity for training and inference is being locked in for decades, not just quarters. It validates the thesis that hyperscale power demand from generative AI will reshape industrial real estate and energy markets for years to come.

The coming days will test global investor appetite for AI exposure with SK Hynix planning a $28 billion U.S. share sale on the Nasdaq—among the largest offerings ever, second only to SpaceX's $75 billion IPO last month. The South Korean memory giant's Seoul-listed stock has more than tripled in 2026, but recent trading has been extraordinarily volatile: it plunged 14.6% in a single session on July 2. That whiplash mirrors the broader pattern for AI stocks, which have swung sharply in recent weeks amid rising doubts about whether the massive capital flowing into chips and data centers can generate sufficient productivity and profit returns to justify current valuations.