
Sigma Signals
Week of September 29, 2025 The Teamsters’ rich contract with UPS drove Amazon, a significant customer, to walk away. Now, UAW’s costly Big Three deal negotiated in 2023 is triggering layoffs. When unions overreach, short-term gains often lead to long-term strain. For investors, expect higher labor costs to accelerate productivity-enhancing automation, benefit non-union competitors, and … Continued




