The stock trading records in WeChat cannot be deleted, because according to regulations, stock trading records are kept for at least 5 years.

Article 29 of the Measures for the Administration of Customer Identification, Customer Identity Information and Transaction Records of Financial Institutions.

Financial institutions shall keep customer identity information and transaction records according to the following time limits:

Customer identity information shall be kept for at least 5 years from the year when the business relationship ends or the year when the one-time transaction is recorded.

Transaction records shall be kept for at least 5 years from the date of transaction records.