Key Findings
Tesla's Q3 results topped expectations thanks to a tariff refund, but actual margins declined. Meanwhile, news of an "AI substrate" alliance between Samsung Electro-Mechanics and Tesla, alongside preparations for mass production of Tesla's humanoid robot Optimus, has sent related stock prices soaring.
Key Findings
Between October 23 and 25, 2026, key issues surrounding Tesla involved the hidden details of its Q3 earnings, partnerships with Korean companies, and progress in its robotics business. Although Tesla's Q3 revenue beat expectations, financial outlets noted this was driven by a one-time tariff refund, raising concerns over actual profitability deterioration. Meanwhile, reports that Samsung Electro-Mechanics signed an AI substrate supply contract with Tesla worth about 1 trillion KRW made major waves in domestic stock markets and industries. Tesla's robotics business is also picking up speed, with news of preparations for Optimus mass production driving global robot-related stock prices upward.
Details
1. The Q3 Earnings Illusion: The Impact of Tariff Refunds Following Tesla's Q3 2026 earnings release, the market focused on revenue beating expectations, but economic media outlets like Barron's pointed out the risks underneath. While Tesla reported an 18% margin for Q3, this reflected a one-time tariff refund, and actual business margins likely worsened. This analysis influenced Tesla's stock price to drop by 3.08% on October 22, closing at $374.58.

2. Samsung Electro-Mechanics and Tesla's "AI Substrate" Alliance According to a front-page report by Maeil Business Newspaper on October 23, Samsung Electro-Mechanics signed an AI substrate supply contract with Tesla worth approximately 1.1 trillion KRW. This partnership responds to Tesla's growing demand for autonomous driving and AI computing, marking an important milestone in strengthening the global competitiveness of Korea's component industry.

3. Countdown to Optimus Robotics Mass Production According to reports on October 25, filing documents submitted by Tesla to the U.S. Securities and Exchange Commission (SEC) signaled that mass production of the humanoid robot Optimus is imminent. Coupled with policy support from the Chinese government, this news triggered a sharp surge in global humanoid robot-related stocks. Additionally, the accelerating investment race in AI and robotics among big tech leaders like Meta CEO Mark Zuckerberg and Tesla CEO Elon Musk has drawn significant market attention.

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