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Related to preliminary prospectus: Final Prospectus
An initial or tentative version of a prospectus.
The first prospectus distributed prior to a new issue of a security. The first prospectus contains information such as the terms of issue, the size of issue, and other, relevant data about the security. Importantly, however, it does not contain the new issue's price. Because the preliminary prospectus is subject to change and because the SEC requires part of it to be printed to red ink, it is informally called a red herring.
See red herring.