Which metric is focused specifically on ownership data in companies?

The correct answer highlights the metric specifically designed to provide ownership data in companies, which is crucial for understanding shareholder composition and institutional holdings. This metric allows users to analyze who owns portions of a company, be it individuals, mutual funds, or institutional investors.

Ownership data is significant for various reasons, including assessing potential influence on corporate governance and evaluating the distribution of shares among different types of investors. Such insights can shape investment decisions, as knowing who holds the major stakes in a company can indicate its stability and potential future performance.

The other options may pertain to financial analysis, trading strategies, or general data, but they do not focus specifically on ownership structures. Therefore, the selection is contextually appropriate for anyone needing to understand the specific dynamics of equity ownership in companies.