For 90 days after the effective date Explanation: When a company that is the subject of an IPO is listed, on the effective date of the offering, prospectuses must continue to be delivered on all purchases in the aftermarket for 25 days. The prospectus delivery requirement for an IPO that will not be listed on an exchange continues for 90 days after the effective date. More test answers on https://studyhippo.com/series-7-practice-exam-10/