Search US SEC 8-K and 6-K current-report nodes for company events and disclosures. Use this to discover issuers across a date range. Do not use this for 10-K or 10-Q filings.
How to search:
1. Always pass concept_groups. Every group is required (AND). Within each group's any_of list, one alternative must match (OR). All groups match inside one filing node. Use separate groups for the main context, action or direction, business object or metric, and a causal or limiting relation when that relation is essential.
2. Optionally pass query with likely verbatim disclosure phrases. Each item is an exact adjacent-token phrase. Put alternate full phrasings in the same list. Query plus concept_groups is hybrid search: exact phrase matches receive a score boost, and concept groups recover different wording. Do not put broad topic words such as "China", "AI", "customer", or "restructuring" alone in query.
3. Add real synonyms and alternate filing language to any_of. The concept path uses English stemming, so one base form usually covers inflections (decline/declined/declining and volume/volumes). Stemming does not add synonyms (sales does not mean revenue; reduce does not mean weaken).
4. Do not search with query only. Omit query for concept-only search. If query is omitted, the search is concept-only.
5. Use date filters for time and tickers to search only selected issuers. Pass ne_tickers (or prefix a symbol with !) to omit issuers.
6. Results are candidates, not final conclusions. Call read_node_content with each promising document_id and node_id(s). Verify negation, causal claims, comparisons across periods, and numeric thresholds such as a percentage or dollar amount in the source text. Cite CITATION_MARKDOWN. When you finish an issuer, search again with the same inputs and add its ticker to ne_tickers so later hits come from other issuers.
Examples of useful group dimensions include geography + weakening signal + demand metric; CapEx + reduction + guidance; AI/automation + enablement + workforce + reduction; customer + loss/concentration; data centers + exposure + monetization; or restructuring + program/charge. Do not add a group for a detail that the filing may leave implicit, because every group is mandatory.
Each result is one filing node: document_id, node_id, parent_node_id, ticker, type, filing_date, match_mode, query, score, and a short snippet.