iFAST was also among the top five advancers on the Singapore Exchange (SGX) as at market close on Oct 12.
This is the second query issued to iFAST in the past three months.
The company received a similar query on Aug 7 following an 11.28% jump in its share price.
See: iFAST triggers SGX query on share prices surge over 11%
SGX RegCo has ordered iFAST to confirm that it remains in compliance of listing rules.
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Shares in iFAST closed 22 cents higher, or 8.5% up, at $2.82 on Oct 12.