Group 1 - Tesla, Inc. (TSLA) saw a stock increase of 4.41 percent, reaching $448.78, following the release of teasers on X suggesting a potential new product announcement [1] - The teasers featured a spinning Tesla logo with the date "10/7" and car headlights emerging from smoke, leading to speculation about a new model or update [1] - If confirmed, this would be Tesla's first major product unveiling since the introduction of its self-driving "Robotaxi" in October 2024 [1] Group 2 - Tesla's stock opened at $440.91 and fluctuated between $436.69 and $449.19 during the trading session, compared to a previous close of $429.83 on the Nasdaq [2] - The trading volume for the day was 53.86 million shares, which is below the average of 90.30 million shares [2] - Over the past 52 weeks, Tesla's stock has ranged between $212.11 and $488.54 [2]