# Tesla Stock Q3 2026: Cybercab on the Road, Optimus on the Line and $20bn of Capex > Tesla stock Q3 2026: flat $28bn revenue, a 2.6% operating margin, Cybercab and Optimus, $20bn of capex, SpaceX talks and our $35.85 DCF value vs $399.81. Agent brief for this QSI Labs research article. Prefer this file for quick facts; use the HTML page for the full human layout, or article.md for the full text. ## Facts - Ticker: TSLA - QSILabs fair value: $35.85 USD - Price: $399.81 (as of 2026-10-30) - As of: Q3 2026 results (21 Oct 2026), Form 10-Q (22 Oct 2026) and the 30 Oct 2026 close - Published: 2026-11-02 - Updated: 2026-11-02 - Author: QSI Labs Research - Canonical: https://www.quantitativesuperintelligencelabs.com/research/tesla-stock-q3-2026-earnings-robotaxi-optimus/ ## Short answer Tesla (TSLA) stock is priced for a very different company from the one in its Q3 2026 accounts. Revenue is flat, operating profit fell 56% and capital spending more than doubled. Our discounted cash flow model, which gives real but probability-weighted credit to robotaxis and Optimus, puts Tesla's value at $35.85 a share, about 91% below the $399.81 close on 30 October 2026. Investors at today's price are paying for an outcome far larger than anything the company has yet reported. ## Full versions - [HTML](https://www.quantitativesuperintelligencelabs.com/research/tesla-stock-q3-2026-earnings-robotaxi-optimus/) - [Markdown](https://www.quantitativesuperintelligencelabs.com/research/tesla-stock-q3-2026-earnings-robotaxi-optimus/article.md) - [PDF](https://www.quantitativesuperintelligencelabs.com/research/tesla-stock-q3-2026-earnings-robotaxi-optimus/tesla-stock-q3-2026-earnings-robotaxi-optimus.pdf) - [This agent brief](https://www.quantitativesuperintelligencelabs.com/research/tesla-stock-q3-2026-earnings-robotaxi-optimus/llms.txt) Publisher: QSI Labs (Quantitative Super Intelligence Labs) Site index: https://www.quantitativesuperintelligencelabs.com/llms.txt