what it is · Law No. 21,521, art. 3 No. 5
Custody is holding instruments on someone else's behalf.
«To hold, in its own name on behalf of third parties, or in their name, financial instruments, money or currencies arising from the flows or the disposal of financial instruments held in custody, or delivered by them to acquire financial instruments or to secure transactions in those instruments.»
Law No. 21,521, article 3 No. 5. Unofficial translation; the Spanish text governs.
Under the law, custody is one of the technology-based financial services (art. 2 letter d). To provide it, an entity such as Custodian SpA must register in the Registry of Financial Service Providers and obtain CMF authorization for that service.