Which database is known to contain the largest amount of transaction data?

Thompson Financial Securities Data is known for containing a comprehensive collection of transaction data, making it a go-to resource for financial analysis. This database encompasses a wide array of transactions related to publicly traded securities, including mergers, acquisitions, and initial public offerings (IPOs). It provides detailed financial metrics and market data that allow analysts to conduct thorough evaluations and comparisons across various sectors.

The breadth and depth of this database enable professionals in the field of business valuation to access a wealth of empirical data, facilitating informed decision-making and robust valuations. It is widely recognized for its extensive historical data, offering insights into market trends and valuations over time.

The other databases, while valuable in their own rights, typically cover more specialized or limited sets of data. For example, BizComps focuses on private companies and smaller transactions, while Pratt's Stats is known for evaluating small to mid-sized firms. IBANYC primarily caters to transactions in specific industries and may not offer the same level of comprehensive transaction data as Thompson Financial Securities Data.