They will need to update within days but its not an exact science from what i have seen over the years. They may even do it today or try for another line of stock before they have to say anything. You can revisit the buy orders and how long it took them to say something when they bought their first big line.
NST can afford to pick up that 9m shares because they would be averaging in under the overall last sales price anyway. They can really only buy about another 5m shares before they hit their limit at 19.9%. Keep an eye out for another line or they just step into the market or they are close enough not to worry. dyor
EAR Price at posting:
35.0¢ Sentiment: Buy Disclosure: Held