Use Capital IQ (see access details). Search for the company by name, then scroll to Investors in the left-hand menu.

From a company's profile in LSEG Workspace (formerly Refinitiv), select the Ownership tab and select Ownership Summary or Shareholders Report. 

Search Bloomberg (see access details).

• Type a ticker symbol of interest, then hit the yellow <EQUITY> key, and type HDS and hit the green <GO> key. Holders can be sorted by name or size.

Go to WRDS (see access details).

• Choose Thomson/Refinitiv as your dataset, then look under Institutional (13f) Holdings or Global Ownership.
• Choose Factset as your dataset, then scroll to Ownership.