The order follows an investigation by the Securities and Exchange Board of India (Sebi) into the matter of front-running by certain entities between June 2000 and June 2010.
In its probe, Sebi found that Nilesh Kapadia, who had been the equities dealer for HDFC AMC since June 2000 till 2010, had passed on information and instructions to his wife and others before placing the orders for HDFC AMC.
Besides, similar front-running activities were observed in the trading account of Kalpana Kapadia.
"In view of such trading pattern, Rajiv Sanghvi, Rajiv Sanghvi-HUF, Sanjay Sanghvi, Sonal Sanghvi, Dipti Mehta and Kalpana Kapadia made substantial profits. These profits would not have resulted if Nilesh Kapadia had not passed the information of the impending large orders of HDFC and instructed them accordingly," Sebi said.
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"These trades were executed in fraudulent manner by Nilesh and Kalpana who had acted in concert, to defraud HDFC. These trades had created false or misleading appearance of the trading in the securities market," Sebi noted.
Considering that seven persons (including Rajiv Sanghvi HUF) had acted together for deriving such undue profits, it is appropriate and reasonable to make them liable, jointly and severally, for the profits, it added.
Further, the regulator has ordered Nilesh Kapadia, Rajiv Sanghvi, Rajiv Sanghvi-HUF, Sanjay Sanghvi, Sonal Sanghvi and Dipti Mehta to impound the "unlawful gains of a sum of Rs 2.17 crore (including interest) jointly and severally."
Front-running refers to an unethical practice of someone trading in shares on the basis of advance information given by a broker, analyst or other executive at a market intermediary before the trades are conducted by that entity.