Shares of major freight carriers faced renewed selling pressure after Amazon announced it is opening its internal trucking services to external businesses, a strategic expansion that transforms the e-commerce giant into a direct competitor in the broader logistics market.

The move signals a significant shift in the industry landscape, as Amazon leverages its massive supply chain infrastructure to capture third-party shipping volume previously reserved for traditional carriers.

The market reaction underscores the gravity of the competitive threat.

Shares of logistics giants UPS and FedEx fell sharply in recent sessions as investors digested the implications of Amazon entering the trucking arena.

The repricing reflects concerns over margin compression and the potential erosion of market share for established players who have long dominated the freight sector.

For investors, the development highlights the vulnerability of legacy carriers to well-capitalized tech-driven entrants with existing scale.