TEMASEK Holdings has hit a perfect score on a transparency index for sovereign wealth funds (SWFs) in the first quarter of this year.

It earned 10 points on the latest Linaburg-Maduell transparency index, sharing the honour with Ireland's National Pensions Reserve Fund, America's Alaska Permanent Fund, Norway's GPF and New Zealand's Superannuation Fund.

The Government of Singapore Investment Corporation (GIC), China Investment Corporation (CIC) and Kuwait Investment Authority scored six points in the index. The index, developed by the US-based Sovereign Wealth Fund Institute, rates transparency among SWFs.

It is based on 10 principles that depict sovereign wealth fund transparency to the public.

These include provision of up-to-date independently audited annual reports, ownership percentage of company holdings, geographic locations of holdings, total portfolio market value, returns and management compensation as well as clear strategies and objectives.