Semiconductor stocks poised for best August in over 20 years

The semiconductor sector just pulled off one of the more dramatic plot twists in recent market history. After suffering their worst monthly decline since the 2008 financial crisis in July, chip stocks have reversed course so sharply that August 2026 is now on pace to be the sector’s strongest August since 2003.

The PHLX Semiconductor Sector Index has climbed more than 10% as of mid-August, a move that looks even more impressive when you consider what came right before it: a gut-wrenching 20%-plus decline in July driven by creeping doubts about the sustainability of AI infrastructure spending.

From freefall to frenzy in 30 days

July was genuinely ugly for chip investors. The SOX index posted its largest monthly drop since the depths of the financial crisis, shedding more than a fifth of its value from recent highs. The catalyst was a familiar one: investors suddenly got nervous that the enormous capital expenditures flowing into AI data centers might not translate into proportional revenue growth for the companies building the silicon that powers them.

The iShares Semiconductor ETF, known by its ticker SOXX, tells the broader story even more clearly. Year-to-date returns for the fund sit somewhere between 70% and 83% as of mid-August 2026.

The names driving the move

The usual suspects are leading the charge. NVIDIA remains the gravitational center of the AI chip universe, with its GPUs still dominating training and inference workloads across the industry. Broadcom has carved out an increasingly important role in custom AI accelerators and networking chips that connect massive GPU clusters together. AMD continues to chip away at NVIDIA’s market share in data center GPUs, while TSMC manufactures the most advanced chips for nearly all of them.

Marvell Technology has also emerged as a significant beneficiary, particularly in the custom silicon and networking infrastructure that underpins AI deployments at scale.

Several of these companies have earnings reports scheduled for late August, which could either cement the rally or give investors another reason to get nervous. NVIDIA’s results, in particular, have become something of a quarterly referendum on the entire AI trade.

Industry fundamentals still look strong

Beyond the stock price gyrations, the underlying business of making semiconductors continues to hit new records. The global semiconductor industry reported sales of approximately $791.7 billion in 2025, a figure that would have seemed almost fantastical just a few years ago.

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