The stock tanked 5.77 per cent to settle at Rs 227.65 on the BSE. During the day, it plunged 6.82 per cent to Rs 225.10.
At the NSE, the scrip fell by 5.74 per cent to end at Rs 227.45.
Led by the dip in the stock, the company's market valuation fell by Rs 1,951.29 crore to Rs 13,565.71 crore.
"Bank of India reported 3Q FY15 results with PAT de-growth of 70.4 per cent yoy which is much lower-than expected, while asset quality worsened," said Vaibhav Agrawal, VP Research - Banking, Angel Broking.
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The bank had posted net profit of Rs 585.82 crore for the October-December quarter of the 2013-14 fiscal.
As far as BoI's asset quality is concerned, gross NPAs as a percentage to total advances rose to 4.07 per cent from 2.81 per cent in the year-ago period.
Its net NPAs went up to 2.50 per cent from 1.75 per cent at the end of December 2013, BoI said in a statement.