Tata Capital has started its investor roadshows for its ₹17,000-crore IPO, which is expected to be the biggest public offering of the year, Moneycontrol reported. Its promoter, Tata Sons, may sell around 23 crore shares, while International Finance Corporation will offload 3.58 crore shares. The IPO comprises fresh issue of 21 crore equity shares and OFS of 26.58 crore shares.