NEW DELHI: As many as 13 of 20 primary market listings of calendar 2015 offered returns as high as 100 per cent in what could be termed as the best year for the IPO market since 2010.This was in a sharp contrast with the performance of the BSE Sensex, where 18 of the 30 stocks eroded investor wealth by anywhere between 2 per cent and 58 per cent.Calendar 2015 saw the S&P BSE IPO index climbing 19 per cent against a 5 per cent drop in the secondary market benchmark Sensex.VRL Logistics, which got listed on April 30, saw its share price nearly double to Rs 407.55 as of Wednesday from an issue price of Rs 205.Syngene International soared 63.6 per cent to around Rs 408.90 against an issue price of Rs 250. This scrip was listed on August 11.InterGlobe Aviation, which added life to the entire aviation sector, has gained 56 per cent since its listing on November 10. Among others, Shree Pushkar Chemicals (57 per cent), Manpasand Beverages (56 per cent), the recently listed Dr Lal PathLabs (47 per cent) and SH Kelkar & Company (42 per cent) too delivered handsome returns.On the flip side, MEP Infra, Adlabs Entertainment UFO Movies and Coffee Day Enterprises declined between 13 per cent and 26 per cent.A total of 18 of the 30 Sensex stocks, on the other hand, are ending the year on a negative note.The year was marked by a revival in IPO activity, thanks to a comeback by retail investors, who helped the primary issues sail through amid all the ups and downs in equity markets globally.“Let us go back to 2003, when the Maruti IPO came. I believe it actually changed the mindset of retail investors because that was one company which they could relate to. That IPO delivered a very pleasant experience on the listing day and thereafter. My feeling is that some of the IPOs that came in 2015 acted on the retail psyche as much as the Maruti IPO did in 2003,” Nilesh Shah, MD, Kotak AMC, said in a interview with ET Now.However, the amount of money raised in the IPO market was less than one single large OFS of a pharma company floated during the calendar year, Shah said.As many as 21 companies raised Rs 13,600 crore by going public during the year. This was the highest fundraising through primary market listings since 2010, when some Rs 37,534.65 crore was raised.Among these IPOs, 20 got listed on the bourses this calendar while shares of Narayana Hrudayalaya are going to be listed in the first week of January. In 2014, six IPOs hit the market and collectively raised Rs 1,261 crore while only three got listed through the IPO route in 2013 and mobilised Rs 1,284 crore.Retail participation in the market led mutual funds to infuse Rs 70,000 crore in the equity market in 2015. Domestic mutual funds accounted for as much as 60 per cent of anchor investment in 15 IPOs this year, which was up to 30 per cent of the total issue size, Jimmy Patel, CEO of Quantum AMC, said in a note.Calendar 2016 is expected to be an even bigger year for the IPO mart, with issues worth $5 billion lined up for the year. British telecom giant Vodafone too has revealed plans to list its Indian business on the bourses. HDFC Life is likely to float its IPO in the middle of 2016, becoming the first insurer to get listed on the bourses.“We will have to sit with our partner Standard Life and decide the exact timing. The objective of both the JV partners is to come up with an IPO once the Standard Life transaction is completed and the year-end results are over.Probably, the second half of calendar 2016 is when an issue looks possible?, said Keki Mistry, VC & CEO, HDFC in an interview to ET Now.