Controversy surrounds the Securities and Exchange Commission's (SEC) Rule 415 that went into effect in March 1982 and remained an experiment until it was permanenty adopted for large firms in November 1983. Rule 415allows a company to register all the securities it plans to issue over the next two years and then to sell someor all of the securities whenever it chooses. This procedure is known as a shelf registration. The purposes of Rule 415 are to simplify the registration of new corporate securities and to allow more flexibility in the way issues are underwritten.

Stephen G. Grubaugh, Andrew J. Stollar, G. Rodney Thompson, Socialist Structural Gaps: A Simultaneous Inference Analysis, The Review of Economics and Statistics, Vol. 71, No. 4 (Nov., 1989), pp. 693-698

Prior studies report lower issue costs for shelf registered debt and conclude that the benefits of increased underwriter competition can be realized by those firms using this registration procedure. This study reexamines the purported superiority of issuing debt via shelf registration, and finds that the savings in issue costs displayed by earlier studies can be attributed to a self-selection bias and not the method of registration.

Rule 415 allows a firm to register all the securities it reasonably expects to sell over the next two years and then, at the management's option, to sell those securities over these two years whenever it chooses. This paper examines whether equity offerings made under Rule 415 (shelf offerings) differ in issuing costs from equity offerings not sold under this rule. We find that shelf offerings cost 13% less for syndicated issues and 51% less for nonsyndicated issues. We also investigate the empirical relevance of the market overhang argument which suggests that shelf registrations depress the price of the registering firm's shares more than traditional registrations. Our data does not support the market overhang argument.

ABSTRACT Rule 415 allows a firm to register all the securities it reasonably expects to sell over the next two years and then, at the management's option, to sell those securities over these two years whenever it chooses. This paper examines whether equity offerings made under Rule 415 (shelf offerings) differ in issuing costs from equity offerings not sold under this rule. We find that shelf offerings cost 13% less for syndicated issues and 51% less for nonsyndicated issues. We also investigate the empirical relevance of the market overhang argument which suggests that shelf registrations depress the price of the registering firm's shares more than traditional registrations. Our data does not support the market overhang argument.

ABSTRACT Prior studies report lower issue costs for shelf registered debt and conclude that the benefits of increased underwriter competition can be realized by those firms using this registration procedure. This study re‐examines the purported superiority of issuing debt via shelf registration, and finds that the savings in issue costs displayed by earlier studies can be attributed to a self selection bias and not the method of registration.