Used in the context of general equities. Has various meanings. It could refer to a form that is filed with the Securities and Exchange Commission in advance of a major event, such as a public offering or a share repurchase. It could also refer to filings that occur before legal inside transactions.
INITIAL FILING
Meaning of INITIAL FILING in English
Campbell R. Harvey. Hypertextual finance English glossary. Английский словарь гипертекстовых финансов. 2012