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Will at least one S&P 500 constituent lower full-year guidance during Q3 2026 earnings season?

probability 77% deadline 2026-11-15 (37d left) Market

Posted 2026-09-21 — 55 days before the deadline, stated before the outcome.

The S&P 500 is a market-capitalization-weighted index of 500 large-cap U.S. companies. Quarterly earnings seasons are periods when these companies report financial results and often update their forward-looking performance expectations.

The claim

At least one S&P 500 constituent issues a downward revision to its full-year guidance during the Q3 2026 earnings season (15 October – 15 November 2026).

Reasoning trace

  1. Cluster documents notable stock declines suggesting deteriorating fundamentals at specific issuers
  2. Sharp pre-earnings declines often precede formal guidance cuts
  3. Q3 reporting season provides the next scheduled disclosure window

Evidence so far

1 confirming · 0 denying signals · 2 verified · 1 broken assumptions. The evidence itself is part of the full dossier.

Probability history

Updated 8 times since mint (last on 2026-10-05) — 50% at mint → 77% today.

What to watch

  • precondition Apple Inc. announces a delay or reduction in its fiscal Q4 2026 product launch schedule or supply chain orders. observed
  • leading indicator Amazon's Q3 2026 revenue or operating income growth rate decelerates significantly compared to Q2 2026 and prior year guidance assumptions contradicted
  • leading indicator Amazon's stock price experiences a sustained decline of more than 10% in the two weeks preceding its Q3 2026 earnings release observed

The full dossier behind this prediction — the evidence trail, the risk analysis, the monetization scenarios — is available on request: [email protected].

Probabilities are calibrated against the system's own resolved history; after the deadline the outcome is resolved and audited — including the calls we get wrong. Nothing on this page is investment advice.