Sameer S Joshi, a sub-broker with trade name Shreesurya Investments, has also been restrained from dealing in the securities market, till further directions.
A preliminary probe by Securities and Exchange Board of India (Sebi) found that Joshi was soliciting money from clients under various schemes by making "unrealistic claims of high returns".
Shreesurya Investments has allegedly cornered more than Rs 5,000 crores from 6,000 investors.
"In the instant case, Sameer has solicited, enticed and induced investors and also collected funds and deposits from them through misrepresentation and allurement of high returns to such investors through various schemes when in reality Sameer had defaulted in making repayments/refunds to his investors," Sebi said in an order today.
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"Thus, schemes floated by Sameer, prima facie, appear to be representation made in a reckless and careless manner," it added.
It has also directed him to refund the monies collected along with profits or returns promised to them "or interest at the rate of 10 per cent per annum, whichever is higher, from the date of investment till the date of refund, within a period of seven days from the date of this order (by January 27, 2015)".
Joshi would have to submit a repayment report to Sebi in this regard, Sebi added.
The broker is also prohibited from transferring the funds mobilised and from disposing of any assets raised from the schemes.
Joshi is affiliated to the stock broker Kisan Ratilal Choksey Shares and Securities Pvt Limited.