Compulsory Superannuation contributions.
Well I did miss an s ( funds ).
The group of funds that make up the Australian superannuation system with its compulsory rates of contribution.
Presently about 11% minimum by employer (Yeh it's really your money), plus probably a bunch of technical variations in fine print.
As of March 2023, assets totalled over US$3.5 trillion
https://my.nzte.govt.nz/article/understanding-australias-superannuation-industry
The lions share of funds in a core group Australian Securities Commission approved funds.
There is a recent trend to diversify with international investments, but largest portion of investments still go into Australia.
https://www.afr.com/policy/tax-and-super/funds-pile-into-shares-as-super-system-hits-3-4trn-20211123-p59bbb
Apparently proposed by Bob Hawke in the 80's but did not make it till..
It started in 1992 Keating Govt.
More known to New Zealanders if they know anyone who has worked in Australia and then had these funds trapped in Australia when they came back to NZ.
Our Kiwisaver started in 2007, so is just a baby.
P.S. Singapore's started in 1955.