Some are some arn't, dependant upon the constitution / fund...

Some are some arn't, dependant upon the constitution / fund mandate and how close they must comply with index if at all. ASX300 is rarely used from my experience and exceptionally strict ruled apply (other than market cap) which RDF won't necissarily meet straight away. Full weighting is unlikely (except for ASX300 index fund , does one still exist) and entry into the ASX 300 is generally more orderly than ASX 200 or ASX100 where they're are other direct trading instruments that need to be hedged. Some early adopters who believe the story may participate and some smaller growth (non index) fundies may be allowed or already be on board. When you look at it's weighting in ASX300 we are not talking big numbers that would necessarily drive the price and maymore than likely have been priced in, in current move.