The semiconductor sector is experiencing a rare wealth feast. Over the past six weeks, the combined market capitalization of the S&P 500's semiconductor constituents has increased by approximately $3.8 trillion, with a surge so fierce that even seasoned investors describe it as "somewhat surreal." (A semiconductor basket index has shown sustained strength since April.) The core logic driving this round of market activity is the seemingly insatiable demand for computing power from AI companies. This demand has now spread from AI-specific chips to broader semiconductor categories like memory chips and traditional CPUs. Major chip manufacturers have just reported impressive first-quarter earnings and provided even more optimistic full-year outlooks. Intel has surged 239% year-to-date, while SanDisk has skyrocketed 558%. South Korea's main stock index has nearly doubled from its low point. Navigating the balance between joining the "final half-hour of the party" and guarding against the eventual ebb of the tide has become the market's central dilemma.
**AI Demand Spillover: All Semiconductor Categories Enter a Boom Cycle** The narrative logic of this chip stock rally underwent a pivotal shift earlier this year. For years, investor enthusiasm was largely concentrated on GPUs used for training and running generative AI models, while traditional CPUs were nearly forgotten by the market. However, as Anthropic's latest AI model gained market recognition with its powerful autonomous agent capabilities, the demand structure for AI application scenarios changed accordingly. AI agents can operate around the clock, continuously generating massive amounts of data, thereby significantly boosting demand for memory chips. Concurrently, demand for traditional CPUs is also recovering. Jonathan Cofsky, portfolio manager of the $8 billion Janus Henderson Technology and Innovation Fund, stated: "Right now, the world's wealthiest tech companies are frantically buying every chip and bit of computing power they can get their hands on." This directly translates to substantial profits for manufacturers. Shortages across various chip types are driving up prices. Analysts expect this supply-demand imbalance to persist for years, not months, with multiple bottlenecks constraining the pace of capacity expansion.
**Earnings Support Valuations, Marking a Fundamental Difference from the Dot-com Bubble** The most significant distinction between this rally and the 2000 dot-com bubble lies in robust corporate earnings. Take memory chip maker Micron Technology (MU.US) as an example. In 2023, the company's revenue was only $15.5 billion, and it recorded an operating loss, a period when memory prices were depressed. According to analyst forecasts, revenue for this fiscal year is expected to rise to $107 billion, with full-year operating profit potentially reaching $77 billion. Despite the stock surging approximately 770% over the past year, FactSet data shows that, benefiting from the massive earnings surge, Micron's current price-to-earnings ratio is only 8.9 times its expected earnings for the next 12 months, compared to the S&P 500's P/E ratio of 23. By traditional valuation standards, this skyrocketing chip stock appears "cheap." Denise Chisholm, Director of Quantitative Market Strategy at Fidelity Investments, noted: "The current anomaly is precisely how strong the earnings growth is." In contrast, during the dot-com bubble, many of the biggest winners had little to no profits or were entirely unprofitable. This fundamental difference is the core reason most analysts remain positive on chip stocks.
**Retail Investors Flock In, Leveraged ETFs Soar** Beyond institutional investors, retail investors are also highly active in this chip feast. Data from Interactive Brokers shows that in the past week, the ten most actively traded stocks on its platform were almost exclusively chip manufacturers, tech companies buying chips, and one semiconductor-focused ETF—SOXL. SOXL uses derivative instruments to track three times the daily movement of the NYSE Semiconductor Index. Over the past year, this ETF has surged approximately 1200%. As of the end of April, the combined daily trading volume for the 3x leveraged inverse semiconductor ETF SOXS and the 3x leveraged long semiconductor ETF SOXL had surged to about 330 million shares, the highest level in at least 16 months. In comparison, the trading volume for the 3x leveraged long S&P 500 ETF SPXL and the 3x leveraged inverse S&P 500 ETF SPXS fell to about 90 million shares, near this year's lowest level. Steve Sosnick, Chief Strategist at Interactive Brokers, stated: "AI is driving the market, and indeed the economy, to a significant degree. Semiconductors are the most direct manifestation of this logic at the moment... This is the closest thing to a vertical move in my memory." Barclays analysts wrote in a report to sales and trading clients this week: "Remember, 'crazy' moves can often last longer than most people expect."
**Bubble Debate Intensifies, Veterans Choose to Hold but Remain Wary** However, the shadow of history continues to loom over this狂欢. In the week ending May 7, the semiconductor ETF SMH recorded an outflow of -$2.3 billion, the largest weekly outflow since the fund's launch in 2011. Meanwhile, the PHLX Semiconductor Index just completed its strongest six-week gain since the week of March 10, 2000—the very historical juncture when the dot-com bubble peaked and subsequently collapsed. Some veteran investors who lived through that era are choosing to continue holding but are quietly calculating their exit timing. Seasoned investor Peter Feinberg has held Broadcom and TSMC for over a decade, with these investments helping his portfolio consistently outperform the S&P 500 in recent years. He admits that the gains since 2026 have felt "somewhat surreal." He captured the shared sentiment of veteran investors in one sentence: "The most fun part of the party is often the half-hour before the police show up to shut it down." Feinberg says he is considering whether and when to trim some of his chip holdings but currently remains invested, constantly reminding himself that good times don't last forever.
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