The scrip plummeted 9.95 per cent to Rs 59.30 - its lowest trading permissible limit for the day - on BSE.
On NSE, shares of the company plunged 9.98 per cent to hit the lower circuit of Rs 59.50.
In the previous two trading sessions, the stock declined by 40 per cent. In three days, the company has lost Rs 4,374.98 crore to Rs 5,958 crore in market valuation.
Target Corporation is the second largest retailer in the US after Walmart and is a major customer for Welspun.
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"We refer to a product specification issue with one client programme of our subsidiary WGBL. We have initiated immediate actions to investigate the root cause. We are appointing an external auditor (one of the Big Four) to audit our supply systems and processes," Welspun India had said in a BSE filing.
Target Corp said it has confirmed after an extensive investigation that Welspun, which uses Egyptian cotton to make bedsheets and pillowcases sold by the retailer, substituted another type of non-Egyptian cotton while producing these sheets between August 2014 and July 2016.