Back in the spring, ATS Automation Tooling Systems (ATA.TO) soared up the rankings in the SIA S&P/TSX Composite Index Report, but over the last six weeks, it has been steadily weakening once again. Yesterday, ATA.TO dropped out of the green zone and back into the Yellow Neutral Zone for the first time since June. It finished the day in 62nd position, down 8 spots on the day and down 32 places in the last month.