update readme

README.md

@@ -288,6 +288,15 @@ All datasets are publicly accessible and stored in Parquet format.
       | item_name      | VARCHAR       | Name of the specific financial line item being reported                |
       | item_value     | DECIMAL(38,2) | Numerical value of the financial item, with 2 decimal places precision  |
 
+18. **stock_shares_outstanding**
+    - **Source:** `https://ycharts.com/companies/${symbol}/shares_outstanding`
+    - **Description:** Provides Shares Outstanding.
+    - **Columns:**
+      | Column Name  | Column Type     | Description              |
+      |--------------|-----------------|--------------------------|
+      | symbol       | VARCHAR         | Stock ticker symbol      |
+      | report_date  | VARCHAR         | Reporting date           |
+      | shares_outstanding  | Long   | Shares Outstanding             |
 
 #### Querying Datasets
 
@@ -425,3 +434,10 @@ Use the following SQL queries in [DuckDB](https://shell.duckdb.org/) to retrieve
     FROM 'https://huggingface.co/datasets/bwzheng2010/yahoo-finance-data/resolve/main/data/stock_revenue_breakdown.parquet' 
     WHERE symbol='TSLA';
     ```
+
+18. **stock_shares_outstanding**
+   ```sql
+   SELECT * FROM 
+       'https://huggingface.co/datasets/bwzheng2010/yahoo-finance-data/resolve/main/data/stock_shares_outstanding.parquet' 
+   WHERE symbol='TSLA';
+   ```