FWIW, it's widely understood in Australia as well.
That's not impossible of course, but it's not like I was uninvolved in those topics.
Either way it's still not an second language thing. It's a using acronyms without definition thing.
But anyone who reads company annual reports (eg. for personal investing), or the financial bits of a newspaper (online or otherwise), or even reads their annual superannuation statement, would very likely have seen the term used (in OZ).
I haven't really seen it crop up in the online stuff I read (some of it Australian financial), but I can see how it would be easy to miss as well.