As of September 16, the latest bull-bear certificate ratio for the Hang Seng Index stands at 63:37. According to data from CITIC Securities' bull-bear certificate distribution chart, the heavy concentration zone for bear certificates is in the 27,000-27,099 range, where the latest number of bear certificates totals 1,109, representing an increase of 9 certificates from the previous trading day. The largest increase in bear certificates occurred in the 26,700-26,799 range, where the latest number reached 617 certificates, marking an increase of 308 certificates from the previous trading day. For bull certificates, both the heavy concentration zone and the largest increase are found in the 25,900-25,999 range, where the latest number of bull certificates totals 1,087, representing an increase of 387 certificates from the previous trading day.