Shares of K+S AG (SDFG.DE) plummeted as much as 9.3 percent after former parent BASF SE (BASFn.DE) said it would put its stake of about 10 percent in the German potash miner up for sale on the stock market. [ID:nLDE7292DC] Traders said the 19.7 million shares BASF intends to place were being offered in a range of 50 euros to 51. [ID:nWEA8002] A source familiar with the transaction told Reuters books in the share sale were covered but no official price span had been set yet. BASF, the world's largest chemical company by sales, declined to comment.
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