Types of Shelf Offerings
There are a couple ways in which a takedown from a shelf offering may differ from a regular, non-shelf offering. Non-shelf offerings typically begin promptly after the start of the post-effective period (the next business day if possible) and last for 30 days.
A continuous offering is a takedown that begins promptly after the start of the post-effective period but remains open continuously for more than 30 days. By contrast, a delayed offering does not begin until some future date, perhaps well after the post-effective period