Update README.md

README.md

@@ -6,50 +6,53 @@ task_categories:
 language:
 - en
 pretty_name: OpenCorporateFinance Companies Dataset
-size_categories:
-- 10K<n<100K
 tags:
 - finance
-- stock
+- stocks
+- companies
+- securities
+- sec
+- equities
+- financial-data
+- parquet
 ---
 
 # OpenCorporateFinance Companies Dataset
 
 ## Dataset Summary
 
-The **OpenCorporateFinance Companies Dataset** is an open dataset containing company-level information for publicly traded companies.
+The **OpenCorporateFinance Companies Dataset** is a structured dataset containing metadata for publicly traded companies and their listed stock securities.
 
-The dataset provides structured company metadata collected from public financial sources and regulatory filings. It is designed for financial analysis, machine learning research, entity resolution, financial AI applications, and building datasets for large language models.
+The dataset combines company information, security identifiers, and exchange metadata into a single analytics-ready table. It is designed for financial research, machine learning, company discovery, entity resolution, financial AI applications, and building financial knowledge graphs.
 
-The dataset includes company identifiers, industry classification, business descriptions, geographic information, SEC identifiers, and company metadata.
+The dataset is provided in **Apache Parquet** format for efficient analytical processing.
 
-## Dataset Contents
+## Dataset Features
 
-The dataset contains one record per company.
-
-### Features
+Each row represents a publicly traded stock security linked to a company.
 
 | Column | Description |
 |---|---|
-| `company_id` | Internal unique company identifier |
 | `cik` | SEC Central Index Key identifier |
-| `company_name` | Official company name |
-| `company_type` | Company type classification |
-| `address` | Company address |
-| `city` | Company city |
+| `company_name` | Company legal name |
+| `ticker` | Stock ticker symbol |
+| `symbol_full` | Full security symbol |
+| `share_class` | Share class identifier |
+| `isin` | International Securities Identification Number |
+| `cusip` | Committee on Uniform Securities Identification Procedures identifier |
+| `exchange` | Stock exchange name |
+| `country_code` | Exchange country code |
 | `state` | Company state or region |
-| `country` | Company country |
-| `zip` | Postal code |
-| `phone` | Company contact phone |
-| `website` | Company website URL |
-| `industry` | Industry classification |
-| `sector` | Sector classification |
+| `city` | Company city |
 | `employees` | Number of full-time employees |
-| `summary` | Business description |
-| `ein` | Employer Identification Number |
-| `created_date` | Dataset record creation timestamp |
-| `last_modified_date` | Last update timestamp |
+| `website` | Company website |
+| `summary` | Company business description |
+| `ipo_date` | Initial public offering date |
+| `delisted` | Indicates whether the security has been delisted |
+| `delisted_date` | Date the security was delisted |
+| `industry_slug` | URL/ML-friendly industry classification |
+| `sector_slug` | URL/ML-friendly sector classification |
 
 ## Data Format
 
-The dataset is provided in Apache Parquet format.
+The dataset is stored as Apache Parquet: