HDFC Bank recently sold stake worth Rs 10,000 crore in its NBFC unit HDB Financial Services Ltd. as part of the Offer For Sale (OFS) component during its IPO. A bonus issue is the distribution of free shares to eligible shareholders. The share price falls in the ratio of the bonus allotment at the ex-date. However, this does not affect the overall value of holdings. After the HDFC Bank board mak