Chevron (CVX) exited the green zone of the SIA S&P 100 Index Report back in March and dipped into the red zone over the summer. Although it did manage to rebound for a few weeks in the late summer, for the last month, CVX has been drifting back down toward the bottom of the Yellow Neutral Zone finishing yesterday in 51st place down 7 spots on the day and down 20 positions in the last month with the share price down 14.6% over that time.