" diversification comes when eggs in basket overflow "
But if the basket is dropped, then all or most of your eggs will be broken.
I would be very hesitant to put any more than 30% - 40% into a single investment (let alone a single sector), but then everyone has different risk profiles!
occam is correct, what ever you do, the SMSF must have an investment strategy that covers the investment direction, and this must be reviewed yearly - The strategy, minutes and bank statements are the the first things the accountant confirms with us each year.
