Ann: S&P DJ Indices Announces March Quarterly Rebalance, page-2

While BLK is clearly doing well this week, it is set to be delisted from the All Ords (based on performance over the longer term). Thoughts on % of ownership by funds for index tracking? How will this dump be absorbed by current support? Is it a big factor, or negligible? What time period would this typically be over? Does anybody here have good insight into this stuff?