IBKR Market Insights — October 26, 2026

Claude, How Do I Say Crash in Portuguese? — 2026-10-26

Core thesis: Two major market events—Brazil's shocking Lula election victory and Anthropic's massive $1.5T+ IPO filing—reveal a critical inflection point: investors are shifting from blind AI enthusiasm to demanding profitable fundamentals, and prediction markets have proven dangerously unreliable on heavily scrutinized events.

Key points:

  • Brazil shock: IBOVESPA down 14% after Lula's upset victory; prediction markets had his re-election odds at single digits post-first-round, only climbing to ~20% late last week—a historic miss on a major political event.
  • Anthropic's scale: ANT seeking $100B+ (vs. SpaceX's $85B), implying $1.5T+ valuation, despite $80.7B losses in H1 2026 (up from $13B in H1 2025) against $16.3B revenue.
  • Sentiment shift: Recent tech jitters and bond investors questioning marginal AI players' debt servicing signal a move away from "any AI money = returns" assumption.
  • IPO appetite cooling: Firmus (NVDA-backed) canceled listing; Elice (South Korea) dropped one-third post-IPO—institutions now scrutinizing unit economics, not just top-line growth.
  • The test: ANT's listing will reveal whether equity investors chase FOMO or demand a credible path to profitability.

Takeaway: Watch ANT's IPO reception as a barometer for whether the AI bubble's exuberance has genuinely shifted to discipline. Failed prediction markets on Brazil suggest complacency on tail risks; similar skepticism warranted on AI valuations lacking clear margin trajectories.

This content is for informational purposes only and does not constitute financial, investment, or trading advice. Always consult a qualified financial professional before making any investment decisions.