Score contribution per author:
α: calibrated so average coauthorship-adjusted count equals average raw count
The effects of short selling on the composition and location of the efficient set has been analyzed in a variety of ways. However, the situation typically facing investors where the initial margin requirement is less than 100 percent and the risk-free interest rate that is paid on the short proceeds is less than the rate paid on initial margin has not previously been considered. The Elton-Gruber-Padberg algorithm (1976, 1978), subject to certain modifications, is shown here to be capable of identifying the efficient set under such conditions. Copyright 1993 by American Finance Association.