Well if they want to have orderly depreciation and liquidation of NXT position then about 28% depreciation per round is what they need to do (0.72 ^ 5 is about 0.19 which is the implied price of NXT based on the last round and the snapshot price of IGNIS). I think they are likely to front-load much of their sell off because it would be easier to liquidate in the hype when volume and enthusiasm to get in the first few rounds is high.