It surpassed its all-time highest monthly record of 1.41 crore transactions achieved in August, the exchange said in a statement.
The transactions come amid devastating COVID-19 outbreak and distributors channelising their transactions through online platforms, the exchange added.
Overall, the platform achieved 7.8 crore transactions in the first six months (April-September) of the current financial year as compared to 9.38 crore transactions in the entire 2020-21.
Besides, the platform registered 9.71 lakh new systematic investment plans (SIPs) amounting to 222 crore this month, the exchange said.
The exchange had launched the BSE StAR MF app to help distributors and independent financial advisors register clients on a real-time basis.