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Intrepid Potash shares jump as Koch discloses larger stake

Nov 4 (Reuters) - Shares of Intrepid Potash Inc, a U.S. producer of the crop nutrient potash, jumped 10 percent on Monday after privately held Koch Industries Inc said it had upped its stake in the company.

Koch disclosed in a regulatory filing that it owned 5.2 million shares of Intrepid as of Sept. 30, or 6.9 percent of the company's outstanding shares. It previously owned about 1.4 million shares.