Amazon (AMZN.US) is fully entering the third-party logistics market, and the transportation sector is under collective pressure.

According to the Wisdom Financial app, on Monday, the transportation sector of the US stock market dropped sharply after Amazon (AMZN.US) announced the expansion of its logistics services, officially opening up its delivery network to third-party businesses, seen by the market as a direct challenge to traditional express delivery and freight companies. Amazon's stock price reached a record high of $276.1 during the trading day.