What is the fine-grained topic of the following text: The court ruled to revoke a Rmb 130 million ($19 million) penalty given by the China Securities Regulatory Commission (CSRC) to Su Jiahong in 2016 on counts of insider trading, according to Caixin, citing a lack of evidence and violations of investigative procedures. Only return the topic.
Revocation of Su Jiahong's insider trading penalty by the court