The firm had posted a profit after tax (PAT) of Rs 2,621 crore in the corresponding quarter a year ago, BPCL said in a stock exchange filing.
PAT also took a sequential plunge with the company having recorded a net profit of Rs 1,842 crore during the previous quarter.
BPCL's gross refining margin, or profit earned on each barrel of crude processed, during the quarter in consideration fell to $4.88 per barrel, compared with $6.09 per barrel in the same period last year.
BPCL stock closed trade on Friday at Rs 484.25 a share, up Rs 2.80, or by 0.58 per cent, over its previous close on the Bombay Stock Exchange (BSE).
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