These 91 companies, against which Sebi has already passed orders, include Sun-plant Agro, NGHI Developers India, MPS Greenery Developers, Saradha Realty India, Alchemist Infra Realty and Rose Valley Hotels & Entertainment.
The order has been passed against these companies for running unregistered Collective Investment Schemes (CIS).
Securities and Exchange Board of India (Sebi) further said Gift Collective Investment Management Company Ltd is the only company registered with it to undertake CIS activities.
The warning to investors comes as certain entities were mobilising money through illegal investment schemes even after the regulator had directed them not to raise any further money and not to launch any new schemes, among others.
In case, any of the unregistered entity is found to be collecting money, Sebi said "investors are advised not to subscribe to such schemes and to report the same to Sebi and State authorities including police authorities immediately, along with appropriate details/documents."
Sebi has powers to deal with the ponzi menace, which typically involves money being raised from investors with promise of high returns and old investors being given returns from funds collected from new subscribers to such schemes.
