AVZ chart, page-4047

It is my understanding tax approved 'Trader' status use opening and closing FY stock valuation without the need to crystalise to offset tax.

If an 'investor' declared status sell to offset the 50% discount on CGT then immediately buy back the following FY which could be an interval of minimum 1 day ie. sell 30June then buy back 1st July, that would be blatant wash trade. If the same investor buy back withing a few months on the previous FY sell, they can then determined that they were protecting a good paper profit and buy back at a much cheaper price.

I think there are better methods to circumvent actual paper profit for this profit discounting if the stock is in the top 300 though.