OUTsurance Holdings is an unlisted public company. In 1987 Misys shares were first traded on the Unlisted Securities Market. An unlisted number is excluded from public directories. STT also applies to unlisted securities. Private equity consists of large-scale private investments into unlisted companies in return for equity. This service is available as an unlisted number, or an unpublished number. The venture invests in listed and unlisted companies. A PLC can be either an unlisted or listed company on the stock exchanges. There are also a large number of unlisted "secret private" conferences. Unlisted residue amounts are restricted to 0.01ppm. In 1983, the business was floated on London's Unlisted Securities Market. Federalists countered that in listing only certain rights, unlisted rights might lose protection. Generally, unlisted numbers are always blocked. Bank Australia is an unlisted public company. If the price of an acquisition is unlisted, then it is undisclosed.