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Semi Stocks Boost The S&P 500

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Semiconductor stocks have surged since March 30, 2026, marking the best-performing sector in the market, with the VanEck Semiconductor ETF rising nearly 40% in an unprecedented 18-day rally. The Philadelphia Semiconductor Index (SOX) extended its winning streak to 18 consecutive sessions, reflecting broad strength in chip-related equities and driving broader market gains. Semiconductors now represent 15.5% of the S&P 500’s market-cap weight—the largest single industry group—amplifying their influence on the index’s overall performance. The rally highlights renewed investor confidence in tech and AI-driven demand, as semiconductors remain critical to advancements in computing, quantum technologies, and next-gen hardware. Analysts note the sector’s outsized impact on the S&P 500, underscoring its pivotal role in shaping market trends amid ongoing technological and economic shifts.
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Semi Stocks Boost The S&P 500

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Bespoke Investment Group48.56K FollowersFollow5ShareSavePlay(2min)CommentsFollow us on Google for the latest stock newsFollow Seeking Alpha on Google for the latest stock newsSummarySince the March 30th low, one of the best-performing areas of the stock market has been semiconductors.Using the tradable VanEck Semiconductor ETF as a proxy, the group is now up right around 40% since then, which is a record 18-day rally since its inception.Given the S&P 500 is market-cap weighted, the semis are the single largest weight of any industry group. In fact, the group accounts for 15.5% of S&P 500 weight. Alexander Sikov/iStock via Getty Images Since the March 30th low, one of the best-performing areas of the stock market has been semiconductors. At the moment, the Philadelphia Semiconductor Index (or the SOX) has risen for 18 sessions in a row since the March 30th This article was written byBespoke Investment Group48.56K FollowersFollowBespoke Investment Group provides some of the most original content and intuitive thinking on the Street. Founded by Paul Hickey and Justin Walters, formerly of Birinyi Associates and creators of the acclaimed TickerSense blog, Bespoke offers multiple products that allow anyone, from institutions to the most modest investor, to gain the data and knowledge necessary to make intelligent and profitable investment decisions. Along with running their Think B.I.G. finance blog, Bespoke provides timely investment ideas through its Bespoke Premium (https://bespokepremium.com/) subscription service and also manages money (https://bespokepremium.com/mm) for high net worth individuals. Visit: Bespoke Investment Group (https://bespokeinvest.com/)

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