/ʰwɛnˈɪʃud,wɛn-,ʰwən-,wən-or, especially Brit., -ˈɪsyud/Show Spelled Pronunciation[hwen-ish-ood,wen-,hwuhn-,wuhn-or, especially Brit., -is-yood]Show IPA
Used to refer to a security that has not yet been issued but that will be issued in the future. Trading in when-issued securities often occurs between the time a new security is announced (for example, the time when a stock is split) and the time the certificates are actually issued.