Hong Kong Exchanges and Clearing / SFC (Part XV SFO)
Consolidated substantial-shareholder lists (>5%, exact percent of issued voting shares) per HKEX-listed corporation - the only free route into the Cayman/BVI/HK holdco layer above operators
Source
Feed (what to expect)
DION public search: per-stock CorpList (resolves sid) then NSConstdSSList, plus the HKEX List of Securities xlsx as the issuer universe.
Quirks
Owners admitted only via the zero-ambiguity GLEIF name match (fca_nsm pattern); unmatched names dropped and counted, never minted.
Reconciliation
Schema
Feeds (axes)
Record kinds
Identifier schemes