Shares of food and beverage producer PepsiCo (PEP) continue to drift downward heading into Tuesday’s earnings report. PEP exited the green zone of the SIA S&P 100 Index Report at the beginning of July and since then, the shares are down 12.5%. Yesterday, PEP dropped into the Red Unfavored Zone for the first time since March after falling another 6 spots to 56th place.