Corpus scope and coverage
The current public documentation scope is English earnings-call transcripts.
Current scope
NL Analytics currently documents workflows around text-based corporate disclosures and earnings-call transcripts. It is not documented as a generic upload-any-text system.
The documented corpus source universe is LSEG earnings-call transcripts available to NL Analytics.
Coverage snapshot
These figures summarize corpus-level metadata available to the documentation.
| Coverage statistic | Snapshot value |
|---|---|
| Earnings-call transcripts | 457,261 |
| Date coverage | 2002-01-14 to 2026-04-30 |
| Covered entities | 15,869 |
| Headquarters countries | 93 |
| Total sentences | 175.9 million |
| Median transcript length | 378 sentences |
| Latest complete year | 27,529 calls in 2025 |
| Largest country share | United States, 59.4% of calls |
| RIC coverage | 98.3% of call rows |
| GVKey coverage | 96.7% of call rows |
| PermID coverage | 86.9% of call rows |
| CIK coverage | 83.3% of call rows |
| ISIN coverage | 75.2% of call rows |
Snapshot generated from corpus metadata on May 6, 2026.
Covered entities use the internal company key with company-name fallback. Identifier coverage is row-level coverage in the corpus metadata. Use these numbers as a starting point, not as proof that a specific sample is covered. After running a search, check the exported calls, firms, countries, dates, and identifiers that remain in your target sample.
Coverage varies
Coverage can vary by country, sector, firm, and time. Check coverage before interpreting variation in a topic measure.
For research use, compare the available transcript coverage against the intended sample. A topic can appear in the broad corpus but still be too sparse or too concentrated in the target firms, countries, sectors, or periods.
Refresh timing
NL Analytics materials describe a roughly biweekly refresh cadence, typically every 13 to 16 days. Treat that timing as approximate rather than guaranteed.
When publishing research, record the coverage statement and export date used for the analysis.
Future data sources
Some NL Analytics materials discuss possible future expansion to annual reports, quarterly reports, job postings, patent filings, or user-owned documents. Those sources are not documented as current product scope.