What document serves as written evidence of the number of shares owned by each stockholder in a corporation?

The stock certificate is the document that serves as written evidence of the number of shares owned by each stockholder in a corporation. This certificate is an official record issued by the corporation, indicating the shareholder's ownership in the company. Each stock certificate typically includes details such as the shareholder's name, the number of shares owned, the class of shares, and sometimes a unique serial number.

This document is important because it not only provides proof of ownership but also may be required to vote at shareholder meetings or receive dividends. Unlike other options listed, such as a shareholder agreement or a dividend voucher, which serve different purposes related to corporate governance or dividend distribution, the stock certificate specifically confirms the quantity of shares owned. The capital stock ledger, while it maintains a record of stock ownership, does not serve as a physical proof of ownership that a stock certificate does.