The ₹500-crore IPO of Electronics Mart India Ltd was subscribed 50% on the first day of the subscription on Tuesday. Retail investors reportedly subscribed 94% shares of the allotted quota, while the non-institutional investors bought 33% shares of the allotted quota. It received bids for 10.58 crore equity shares against an offer size of 6.25 crore equity shares, data showed.