Shares of Ruchi Soya rose for the second straight session today despite the company filing an FIR in Haridwar to investigate the source of SMSs advising investors to participate in its follow on public offer (FPO). The development came after the market regulator SEBI, on March 28, asked the Baba Ramdev-led firm to provide an option to all investors (except anchor investors) in its follow-on public offer (FPO) to withdraw their bids due to "circulation of unsolicited SMSs advertising the issue".