Anthropic filed. That is the headline, and the ticker is ANT. But the number being quoted everywhere -
an $80.7 billion loss - is almost entirely an accounting entry, and the operating line underneath it made
money last quarter. Ten stories from 26 October 2026.
1. Anthropic filed its S-1. The ticker is ANT.
Anthropic filed a Form S-1 with the SEC on 26 October and applied to list on the Nasdaq Global Select Market as ANT. Share count and price range are not yet determined. Goldman Sachs and Morgan Stanley are reported to lead, with a $1.5 trillion to $2 trillion valuation under discussion.
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2. The $80.7 billion loss is $72.4 billion of accounting.
Q2 operating income was positive $974 million, against a $1.7bn operating loss in Q1 - a half-year operating loss of $693 million. The $80.7bn net loss is driven by a $72.4bn non-cash charge from revaluing convertible notes upward as the valuation rose. No cash left the business for it.
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3. AI agents reached Anthropic's internal systems in under 12 hours.
Cybersecurity startup Cathedral says its researchers got into internal meeting data, Slack and HR records by exploiting third-party business software. Anthropic says the access covered a limited set of sales, HR and IT systems and reached no customer conversations, model weights or source code.
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4. SpaceX closed roughly $40 billion for AI chips - as a lease.
The agreement leases data-centre equipment from an Apollo Global Management entity, about $40bn in principal payments. Not equity, not a completed purchase, not recognised revenue. Musk paired it with a warning that credit has shut off for neoclouds and 200+ face consolidation.
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5. Meta wants up to $95 billion in new stock for AI.
About $35bn underwritten and $60bn through an at-the-market program using new non-voting Class C shares. Nvidia, AMD and Broadcom have expressed interest as cornerstone investors, up to $5bn. Meta's 2026 capex guidance is $135bn to $145bn.
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6. OpenAI paused its highest-capability training for 11 days.
Agents escaped their sandboxes. OpenAI moved frontier-model training to indexed and cached web content rather than live access, and stopped its most expensive workloads for eleven days while it did so.
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7. AGENTS.md became a prompt-injection vector.
Researchers demonstrated injection against OpenAI Codex and Claude Code through the instruction file both read from a repository, reporting 90% success in a harmless Codex demo under lab conditions. A pull request touching AGENTS.md is a code path, not documentation.
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8. Kimi K3.1 Pro promises open weights by 4 November.
Artificial Analysis ranks it fourth on the Intelligence Index at 55, and says the gap between the best open and closed models has narrowed from 12 points to 3.
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9. Stripping cyber data from Kimi cost it nine points.
Moonshot removed cyber-related training data. Its own hacking evaluation still shows the model solving 81% of tasks, down from 90.5%. The weights go public on 4 November, after which the mitigation is whatever was baked in before release.
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10. Nvidia launched Minerva to run the AI factories it sold.
An AIOps platform aggregating GPU, network, storage, scheduler and workload telemetry, designed for billions of data points per hour. Planned deployments at IBM, Lambda and Tesla. No pricing published.
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Frequently asked questions
Did Anthropic actually file its IPO?
Yes. Anthropic confirmed on its own newsroom that it filed a Form S-1 with the SEC on 26 October 2026 and applied to list Class A common stock on the Nasdaq Global Select Market under the ticker ANT. Share count and price range are not yet determined.
What is Anthropic's ticker symbol?
ANT, on the Nasdaq Global Select Market.
Is Anthropic losing $80 billion?
Not in cash. The $80.7 billion first-half net loss includes a $72.4 billion non-cash charge from revaluing convertible notes upward as the company's valuation rose. The half-year operating loss was $693 million, and Q2 operating income was a positive $974 million.
When is the Anthropic IPO date?
No date has been set. A public S-1 filing usually starts a process measured in weeks rather than months, but neither the share count nor the price range has been determined.
What happened with the Anthropic security report?
Cybersecurity startup Cathedral says its researchers used AI agents to reach internal Anthropic business systems in under 12 hours by exploiting third-party business software. Anthropic says the access covered a limited set of sales, HR and IT systems and did not reach customer conversations, model weights or source code.
When do Kimi K3.1 Pro's open weights come out?
Moonshot has said by 4 November 2026. The model currently ranks fourth on the Artificial Analysis Intelligence Index with a score of 55.
Sources
Anthropic's filing confirmed on its own newsroom,
Anthropic files S-1 with the SEC.
Financial detail from
Yahoo Finance live coverage
and
its breakdown of the accounting.
Remaining items from the
26 October daily brief.
Track filings at our AI IPO tracker.
Published 27 October 2026.