Why Is Tesla (TSLA) Stock Up Today? $400 Reclaim, AI Chip Momentum Spark 3% Rally Ahead of Earnings

Tesla Inc (TSLA) shares climbed 3.01% on April 17, 2026, closing at $400.62. The stock has successfully broken out of a multi-month descending channel, surging nearly 15% last week to end a grueling eight-week decline. The rally is being driven by a decisive shift in investor sentiment as the market begins to reprice Tesla as a Physical AI powerhouse rather than a traditional automaker, fueled by recent breakthroughs in its self-developed AI chips and intensifying speculation around the Terafab compute project.

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