The Rs 525-crore initial public offering (IPO) of Central Depository Services (CDSL) was subscribed over two times on Monday, the first day of the issue. Both individual and institutional investor portions of the issue were subscribed over. The IPO has so far received bids for 51 million shares, for the 24.8 million on offer. CDSL on Friday had raised Rs 154.1 crore from anchor investors. The IPO will remain open till Wednesday. The price band is Rs 145-149 per share. The IPO entirely comprises secondary share sale with existing shareholders BSE, State Bank of India, Bank of Baroda and Calcutta