When does scholarship $ start to run out

bmaxp523

I keep seeing people say that if you apply on the later side schools may run out of scholarship money, but then I see people talking about re-negotiating scholarships after the first seat deposit deadline in April.

Does anyone know how this works/how much money schools usually have for later negotiations? I'm trying to get an idea of how much scholarship money a school would have left for an application submitted on February 1st if it was a top application for the school. Would they still have enough scholarship money to give that top applicant a good scholarship or will that applicant have to try through renegotiations?