Tony purchased 100 shares of T-Rex stock for $43 a share. On the same day, Sam also purchased 100 shares of T-Rex stock for $43 a share. Tony paid cash for his purchase while Sam used margin. The initial margin requirement on this stock is 60% while the maintenance margin is 40%. Both Tony and Sam sold their shares after eight months at a price of $40 a share. The stock pays no dividends. Tony had a holding period percentage return of % as compared to Sam's % return. Ignore margin interest and trading costs.