http://en.wikipedia.org/wiki/Custodian_bank
In finance, a custodian bank, or simply custodian, refers to a financial institution responsible for safeguarding a firm's or individual's financial assets. The role of a custodian in such a case would be the following: to hold in safekeeping assets such as equities and bonds, arrange settlement of any purchases and sales of such securities, collect information on and income from such assets (dividends in the case of equities and interest in the case of bonds), provide information on the underlying companies and their annual general meetings, manage cash transactions, perform foreign exchange transactions where required and provide regular reporting on all their activities to their clients.

http://de.wikipedia.org/wiki/Depotbank
Als Depotbank bezeichnet man in Deutschland gemäß dem Investmentgesetz (InvG) Kreditinstitute, bei denen die Sondervermögen (z. B. Wertpapiere) von Investmentfonds in Wertpapierdepots hinterlegt werden. Zuweilen werden auch allgemein Kreditinstitute in ihrer Funktion als depotführende Stelle als Depotbank (engl. Custodian) bezeichnet.



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Note added at 14 мин (2008-04-28 09:39:44 GMT)
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http://job.extra.kz/docs/?art=pension

В соответствии с Законом Республики Казахстан от 20.06.97 г. N 136-1 "О пенсионном обеспечении в Республике Казахстан"

Общие положения

1. Банк-кастодиан - банк, оказывающий услуги по ответственному хранению и учету вверенных ценных бумаг и денежных средств клиентов.