This week’s Tesla and SpaceX stock price moves show Tesla closing at $181.62 after intraday volatility, while SpaceX hit a record implied valuation in funding rounds. Economists point to global interest rate pressures as key drivers of market sentiment. Shares of Stellantis ( STLA ) jumped 6% in premarket trading after the automaker reported strong U.S. sales growth. Stellantis said sales rose 6% in the third quarter compared with the year-ago period, as sales in September surged 16%. “Fueled by sales growth across the Jeep, Ram, Chrysler and FIAT brands, our U.S. sales saw strong results in the third quarter, including the month of September, which was our highest monthly market share in the U.S. in 15 months,” said Jeff Kommor, head of U.S. sales, in a release. Stellantis reported a net loss in the first half of the year as tariffs weighed on the company's performance. “The truth is SpaceX’s valuation was probably cut in half today because of this behavior,” he said, adding that it wasn’t clear “whether SpaceX investors will realize that on the short or medium term because it’s a private company and insulated from the stock market, but this is devastating to SpaceX as well.” Tesla and SpaceX stock price analysis suggests Tesla’s RSI levels are nearing oversold territory at 34, implying possible near-term recovery, while SpaceX valuations continue trending up following Starlink service expansion into new regions.