• Initial public offerings (IPOs), lock-ups and market efficiency 

      Evensen, Andreas Spjelkevik; Thuen, Øivind Christian (Master thesis, 2012-05-10)
      In this paper we have examined 174 lock-up agreements in 142 unique firms. A lock-up refers to the prespecified time, usually 180 days, following an IPO, where pre-IPO shareholders enter into an agreement with the underwriter ...