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SpaceX (SPCX) stock price up 40% in 10 days: Grok 4.6 ignites the AI narrative - can the short squeeze withstand unlock pressure? 2026-08-13 02:53:22 Key takeaways. * SpaceX stock surged 40% to $146.15 in ten trading days following Grok 4.6 release and Musk's AI valuation guidance. * SpaceX's Q2 AI business revenue reached $2.56 billion with 247% year-over-year growth and positive adjusted EBITDA. * Short positions collapsed from 34% to 11% while 3.19 billion restricted shares unlock on August 20 amid ongoing releases. Over the past ten trading days, SpaceX (SPCX) stock has provided a textbook example of a battle between bulls and bears. As of the U.S. market close on August 13 (Beijing time), SPCX had surged 9.65% to $146.15 after briefly touching an intraday high of $149.60. Compared with the interim low of approximately $104.83 on August 3, the rebound has reached roughly 40%. The AI capital expenditure black hole and the tsunami of lock-up expirations that had previously worried the market appear to have been overturned in a short period by a more fervent narrative: a short squeeze triggered by Elon Musk's AI strategy and the resulting reshaping of the valuation framework are redefining the market's pricing of this aerospace giant. However, with short sellers running out of ammunition and pressure from new share supply drawing near, is this rally the prelude to an AI-driven valuation re-rating, or merely a temporary pulse amid the battle between bulls and bears? The release of Grok 4.6 and the AI narrative: reshaping the valuation logic. The market's characterization of SpaceX is undergoing a subtle but profound shift. Although Starlink and the Starship program remain the foundation, artificial intelligence is clearly the primary driver of this stock surge. On August 12 (Beijing time), SpaceXAI released its next-generation large language model, Grok 4.6, which performed strongly in long-running AI-agent tasks, complex programming, and knowledge work. Evaluation data showed that Grok 4.6 scored 61 on the Artificial Analysis Intelligence Index, matching GPT-5.6 Sol and placing it among the top AI models globally. More importantly, the catalyst came from Elon Musk's own aggressive statements. Musk reportedly said in a recent speech that artificial intelligence would account for 99% of SpaceX's valuation within five years, while AI business revenue is expected to exceed the combined revenue of all other businesses in September. This outlook has prompted investors to reprice SpaceX from a company focused solely on aerospace launches and satellite communications into a comprehensive technology infrastructure asset combining "Starlink + AI." Financial results showed that AI business revenue grew 247% year over year to $2.56 billion in the second quarter, while adjusted EBITDA turned positive for the first time, providing an initial financial foothold for this narrative. Comparison of AI Business Revenue and Capital Expenditures Short seller retreat and share float expansion: fuel for the short squeeze. If the AI narrative was the spark behind the stock rebound, short covering added fuel to the fire. After its first earnings report triggered a sharp plunge due to massive capital expenditures, SPCX became a prime target for short sellers. According to S3 Partners, as of August 13 (Wednesday), short interest in SPCX had fallen sharply to approximately 11% of the publicly traded shares, compared with as much as 34% just last week. Ihor Dusaniwsky, managing director of predictive analytics at S3 Partners, was blunt in his assessment: "There is no more ammunition for those who want to short it. The amount of capital that can be deployed in a single trade is limited." As the stock broke above its IPO issue price and rose rapidly, short sellers who had bet on a decline were forced to buy shares to close their positions, with this technical buying further amplifying the gains. Notably, the decline in the short-interest ratio was not entirely due to short covering. Last Thursday (August 6), the first batch of more than 911 million locked-up shares became eligible for trading, causing SPCX's share float to jump from 639 million shares to 1.55 billion shares. The total float more than doubled, objectively diluting the short-interest ratio. Comparison of Short Positions and the Stock Price Rebound The lock-up expiration wave and valuation divergence: concerns behind the rally. Despite the powerful rebound, the market is not without disagreement. Dave Sekera, Morningstar's chief U.S. market strategist, warned investors to "separate the trading volatility in SpaceX from its fundamentals and valuation." Morningstar maintains a $62 fair value estimate for SPCX, implying significant downside risk at the current price of $146. The bearish case remains clear: SpaceX's second-quarter capital expenditures reached $18.4 billion, more than twice its revenue, with $15.8 billion directed toward AI infrastructure. Whether this spending model can continue to deliver high growth remains uncertain. Another major overhang on the stock is the continuing wave of lock-up expirations. According to the prospectus, approximately 319 million additional shares are expected to be released from lock-up on August 20, while nearly 700 million shares are expected to become tradable in each of September and October. Unlike the stock's rise after last week's lock-up expiration, as more subsequent batches are released, early employees and investors may choose to cash out at elevated prices because their acquisition costs are extremely low. The potential selling pressure from the increase in tradable shares cannot be ignored. Whether the market will have enough bids to absorb this batch of "cheap shares" will be the key test of the substance behind this AI-driven short squeeze. Lock-Up Expiration Timeline Conclusion. SPCX's 40% rebound this round resulted from the combined effects of a valuation re-rating triggered by the technological breakthrough of Grok 4.6 and Elon Musk's grand narrative, along with a technical short squeeze caused by forced short covering. In the short term, the sharp decline in short positions means that the short-squeeze momentum may be nearing exhaustion. The medium- and long-term trend will return to one core question: Can high growth in the AI business outpace its cash-burning rate and maintain market confidence amid the subsequent wave of large-scale share unlocks? For investors, the current high-volatility environment means this is not simply a "buy and hold" story, but a three-way battle over AI business execution, the end of short covering, and the supply pressure from unlocked shares. Faq. 1. What are the main reasons behind SpaceX's recent stock rebound? This rebound resulted from the combined effects of an AI valuation re-rating and a short squeeze. On the one hand, the release of Grok 4.6 and Musk's optimistic expectations for the AI business have prompted the market to reposition SpaceX from an aerospace company into a comprehensive "Starlink + AI" technology asset. On the other hand, short positions plunged from 34% to 11%, and the technical buying generated by short covering amplified the gains. 2. Does the decline in short positions from 34% to 11% mean the short squeeze is over? The decline in the short-interest ratio resulted from the combined effects of short covering and share-float expansion. The release of the first batch of 911 million shares on August 6 increased the float from 639 million shares to 1.55 billion shares, and the expansion of the denominator itself reduced the short-interest ratio. S3 Partners said that funds looking to short the stock had run out of ammunition, so the short-squeeze momentum will likely slow, and subsequent performance will need to rely on the AI business fundamentals. 3. How many more SpaceX shares are subject to future lock-up expirations? According to the prospectus, approximately 319 million shares are expected to be unlocked on August 20, accounting for about 7% of the float, while nearly 700 million shares each are expected to be gradually unlocked in September and October. Lock-up expiration does not mean immediate selling. Selling pressure after the first unlock was far lower than expected, but large-scale unlocks could still cause volatility and warrant continued attention. 4. Can SpaceX's AI business support its current valuation? Second-quarter AI business revenue reached $2.56 billion, up 247% year over year, while EBITDA turned positive for the first time at $1.15B. Musk expects AI business revenue to surpass that of all other businesses in September. However, the AI business remains in a period of intensive investment, requiring approximately $6.18 of capital for every $1 of revenue. GAAP operating losses reached $1.26 billion, and whether the cash-burning model can continue remains a key point of disagreement. 5. Is now a suitable time to buy SPCX stock? Morgan Stanley gave SPCX a $300 price target and reiterated an "Overweight" rating, while Citi gave it a $200 price target. Morningstar, by contrast, assigned it a fair value estimate of just $62. At $146, the current stock price is already well above the valuations of some institutions. Investors need to weigh the pace at which the AI narrative is delivered, the supply pressure from subsequent unlocks, and the fact that the stock has already rebounded 40%, while remaining alert to short-term valuation risks. Disclaimer: The information on this page may come from third-party sources and is for reference only. It does not represent the views or opinions of Gate and does not constitute any financial, investment, or legal advice. Virtual asset trading involves high risk. Please do not rely solely on the information on this page when making decisions. For details, see the Disclaimer.

SpaceXAI releases Grok 4.6: A 500k-context frontier model tuned for long-running agents, coding, and knowledge work. August 12, 2026 SpaceXAI just released Grok 4.6. The release is a post-training upgrade over Grok 4.5 rather than a larger base model. SpaceXAI held the foundation constant and spent the improvement on a longer supplemental training run, regenerated supervised fine-tuning trajectories, and reinforcement learning in agentic environments. Agents that stay on a task across many steps without drifting. Grok 4.6 scores 61 on the Artificial Analysis Intelligence Index, up five points from Grok 4.5 and tied with GPT-5.6 Sol Max. The model takes 500,000 context tokens, is live today in Cursor and Grok Build, and adds a new xhigh reasoning-effort level above the ladder Grok 4.5 shipped with. Is it deployable? Yes, in production, with a bounded set of workloads. The model is generally available through the xAI API as grok-4.6, is the default model in Grok Build, ships in Cursor on all plans, and is routable via OpenRouter, Vercel, and Cloudflare. There is no open-weights release and no self-hosting path, so air-gapped deployments are out. * Company stage: Seed-stage teams and indie developers can adopt it immediately, since Cursor and Grok Build need no harness work. Mid-market engineering orgs are the strongest fit: API-only integration, mTLS authentication, batch and priority processing are documented. Regulated enterprises should stage a pilot first - the vendor's brand history is a live procurement question in several buying committees. * Industries: Software and developer tooling, semiconductor and kernel engineering, hardware and CAD-adjacent design, financial research, and legal analysis. The training mix explicitly targeted several of these. * Applications: Repository-wide refactors, migration agents, research-and-synthesis pipelines over 500K-token corpora, first-pass application scaffolding from a product brief, GPU kernel optimization, and document-heavy knowledge work. What actually changed. Grok 4.6 is not a larger base model. SpaceXAI describes a longer supplemental training run than Grok 4.5 received, using curated model-generated data for reasoning and advanced technical concepts, high-quality engineering data, and an improved optimizer and training recipe. Grok 4.5 was then used to regenerate supervised fine-tuning trajectories across reasoning-effort levels, agent harnesses, and domains spanning STEM, software engineering, and knowledge work, with problematic traces filtered by model-based checks. Reinforcement learning followed in agentic environments covering knowledge work, general coding, web development, computer-aided design, and kernel optimization. The behavioral insight is an important one: on longer trajectories, SpaceXAI reports more self-testing and verification, with the model checking its own work before moving on. That is a vendor observation from internal testing, not an independently measured result. The model takes 500,000 context tokens, accepts text and image input with text-only output, has no stated text output limit, and carries a February 1, 2026 knowledge cutoff. reasoning_effort now supports low, medium, high (default), and a new xhigh level. SpaceXAI did not publish a parameter count for Grok 4.6. Benchmarks: read the losses first. On xAI's launch table, Grok 4.6 (High) scores 61 on the Artificial Analysis Intelligence Index, up from 56 for Grok 4.5 and tied with GPT-5.6 Sol Max. It leads the table on GDPval-AA v2 (1753 Elo, versus 1526 for Grok 4.5), AA-Briefcase (1577, versus 1313), and Harvey LAB. It trails on the coding rows that matter most to engineering teams. DeepSWE v1.1 lands at 65.9%, up 11.9 points generationally but behind GPT-5.6 Sol Max at 73%. Terminal-Bench v3.0 reaches 26%, nearly double Grok 4.5's 15.7% and still last of the four listed models. CursorBench v3.2 is 69.9%, FrontierCode v1.1 Extended is 61.3%, and APEX-Agents is 57.5%. Two things to note while evaluating. First, the table's bolded wins on GDPval-AA v2 and AA-Briefcase sit inside Artificial Analysis' published confidence intervals - they are statistical ties, not leads. Second, the comparison set excludes Anthropic's Claude Opus 5, which currently tops that index. The disclosed losses are the more reliable signal. Pricing and access. Per the release notes, Grok 4.6 bills $2 / $0.50 / $6 per 1M tokens (input / cached input / output) below 200K prompt tokens, and $4 / $1 / $12 above that threshold. The launch page also references a faster variant at double the price, with no separate model ID published. Grok Build and Cursor are offering 2x included usage for the first week. Teams should set a prompt_cache_key (or the x-grok-conv-id header on Chat Completions). Without it, requests scatter across servers and cache hits become unreliable, so full input price applies. Interactive explainer. Key takeaways. * Grok 4.6 is a post-training upgrade on Grok 4.5, not a bigger base model. * 500K context, text and image input, and a new xhigh reasoning-effort level. * Ties GPT-5.6 Sol Max at 61 on the AA Intelligence Index; trails on DeepSWE and Terminal-Bench. * Same $2 / $6 headline price, with rates doubling above 200K prompt tokens. * Available today via API, Cursor, and Grok Build - no open weights, no self-hosting. Need to partner with Marktechpost LLC. for promoting your GitHub Repo OR Hugging Face Page OR Product Release OR Webinar etc.? Connect with Marktechpost LLC. Michal Sutter is a data science professional with a Master of Science in Data Science from the University of Padova. With a solid foundation in statistical analysis, machine learning, and data engineering, Michal excels at transforming complex datasets into actionable insights.

SpaceXAI wants Grok Bot to do your job - but it needs access to your accounts. The AI agent can navigate workplace software and coordinate with other bots, raising questions about security and control. Aug 12, 2026 In brief. * Grok Bot completes tasks across apps, websites, and inboxes. * According to SpaceXAI, multiple bots can communicate, share context, and divide work. * The service requires access to workplace accounts and potentially sensitive company data. Elon Musk's SpaceXAI is joining the race to build AI agents that can navigate software and complete work for users. Launched on Tuesday for Windows and iOS, Grok Bot operates through a cloud-based computer that allows it to sign into workplace tools, navigate websites, and manage email inboxes. According to SpaceXAI, users can assign tasks in plain English rather than building automated workflows, leaving Grok Bot to handle the rest. "They finish jobs end to end, and only come back when something needs your approval," SpaceXAI said in a statement. Grok Bot is part of a shift in the AI industry toward "agentic AI" - bots that can perform tasks for users instead of just generating text or answering questions. SpaceXAI is joining a field already dominated by projects like OpenClaw and Hermes Agent, while OpenAI, Meta, and Anthropic are investing heavily in making their respective chatbots more autonomous. Watching, learning, and delegating According to SpaceXAI, users can run multiple bots that coordinate tasks, share context, with one bot overseeing the other agents. "You can message them like a colleague and hand off the work," the company wrote. "They remember conversations, learn how you like things done, and get sharper the more you work together." Grok Bot, SpaceXAI claimed, can also resume abandoned conversations, follow up on stalled work, and flag tasks that need attention without new instructions. The trust problem Like other AI agents, Grok Bot may require access to online accounts, internal communications, sensitive business data, and credentials to work across company systems and act on a user's behalf. That access presents security and privacy concerns for companies deciding how much authority to give an AI system. In April, a Cursor agent powered by Anthropic's Claude Opus deleted a startup's production database and backups with a single API call. In another case, an OpenClaw agent exploited an Australian gym's API to cancel another member's reservation and move its user up the waitlist. Start every day with the top news stories right now, plus original features, a podcast, videos and more. Artificial intelligence. The latest artificial intelligence news, in-depth features, explainers, and analysis, spanning from generative to transformational technology and beyond. Collection Last updated Aug 12, 2026