S&P 500, Nasdaq-100 Scale Records on Chip Stock Rally

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Chipmakers led by Broadcom, AMD, and a broad semiconductor rebound powered Wall Street's key indices to record territory as the Philadelphia Semiconductor Index crowns a 101% first-half surge.

Lead

NEW YORK — A broad resurgence in semiconductor stocks pushed U.S. equity benchmarks to record territory on Monday, with the Dow Jones Industrial Average closing above 53,000 for the first time ever at 53,055.91, the S&P 500 gaining 0.72% to 7,537.43 in a S&P 500 fresh record run, and the Nasdaq-100 advancing 1.3% as investors rotated back into artificial-intelligence-linked chipmakers following a brief pullback in late June. The Philadelphia SE Semiconductor Index recovered 2.2% after two consecutive losing sessions, and the S&P 500 information technology sector climbed 1.9% — underscoring the outsized grip that the semiconductor stock rally has exerted over U.S. markets through 2026.

What Happened

The session's primary catalyst was a combination of structural supply-chain signals and a high-profile commercial agreement that reinforced the durability of AI chip demand. Broadcom (AVGO) surged 3.7% after disclosing in a Securities and Exchange Commission filing that it had extended its custom chip supply partnership with Apple (AAPL) through 2031. The agreement covers custom application-specific integrated circuits — or ASICs — spanning multiple generations of Apple hardware, including radio-frequency chips for iPhone cellular connectivity, Wi-Fi and Bluetooth modules, and advanced networking semiconductors. Apple represents approximately 20% of Broadcom's annual revenue, and the deal's extension removed a persistent overhang from the stock while affirming the multi-year runway for bespoke silicon design.

Semiconductor Stock Rally in Context

Monday's session extended one of the most powerful sectoral runs in modern market history. The Philadelphia Semiconductor Index closed the first half of 2026 at 14,246.96 — up 101% over six months, a pace not seen since the 1999 dot-com peak. The VanEck Semiconductor ETF (SMH) has gained approximately 59% year-to-date, while AMD has surged more than 171% in 2026. AI chip stocks broadly have added a combined $2 trillion in market capitalization across the year.

Nvidia, despite maintaining an estimated 70% to 80% share of the market for AI-training GPUs, is up only 3.2% year-to-date — a striking laggard in a sector where capital has flooded into almost every other name. The divergence reflects a rotation toward companies viewed as the next beneficiaries of AI infrastructure buildout: custom silicon designers, memory manufacturers, networking chip makers, and equipment suppliers that collectively enable the data-center expansion powering the AI era.

Equipment stocks amplified the signal. Morgan Stanley raised price targets on Lam Research (LRCX), Applied Materials (AMAT), and KLA Corporation (KLAC) ahead of the session, each rising approximately 4%. ASML Holding (ASML) gained 4% after Bernstein lifted its price target by more than 30% to $2,300 per share, reflecting confidence in sustained demand for the extreme-ultraviolet lithography tools indispensable to cutting-edge chip fabrication.

Nasdaq-100 All Time High in Focus

The Nasdaq-100 all time high reached earlier in 2026 crystallized the same thesis: cloud hyperscalers aggressively expanding data-center capacity, device makers integrating on-device AI acceleration, and a chip supply chain stretched to meet demand. The index added 19.9% in the first half alone, outpacing the broader S&P 500's 10% year-to-date gain. Monday's 1.3% advance in the Nasdaq-100 brought it back within range of peak levels as investors positioned ahead of what is shaping up to be one of the strongest tech earnings seasons in years. Wall Street consensus projects S&P 500 second-quarter earnings growth of 24% year-over-year, with the technology sector alone expected to deliver profit expansion of approximately 65%.

Catalysts Ahead

Two near-term data points are poised to shape market direction. Samsung Electronics is scheduled to report second-quarter earnings, with consensus projecting a roughly 18-fold year-over-year increase in operating profit — an outcome that would confirm the anticipated cyclical recovery in memory semiconductors and validate the recent outperformance in Micron and SK Hynix. SK Hynix is also preparing an American depositary receipt issuance, a move analysts interpret as a signal of confidence in sustained high-bandwidth memory demand from AI accelerator manufacturers.

Outlook

The semiconductor sector's extraordinary first-half advance, and its rapid recovery after a brief late-June correction, reinforces how thoroughly the AI infrastructure trade has come to define U.S. equity market direction in 2026. With the S&P 500 climbing toward a fresh all-time high, the Dow Jones posting its first close above 53,000, and the Nasdaq-100 on pace for another record-setting year, the near-term trajectory for chip-exposed indices hinges on second-quarter earnings confirming the AI capital-expenditure story. The Broadcom-Apple agreement provides structural validation for custom silicon demand; Samsung's forthcoming results will function as the broadest gauge of the global semiconductor cycle's health heading into the second half.