PARTNERSHIP BUYS IPCO <IHS> STAKE OF 6.8 PCT MP Co, a New York investment partnership, told the Securities and Exchange Commission it bought a 6.8 pct stake in IPCO Corp common stock. The partnership said it acquired 346,600 IPCO shares, paying 4.9 mln dlrs, because it believed the securities to be "an attractive investment opportunity." It said it planned to regularly review its investment and may in the future recommend business strategies or an extraordinary corporate transaction such as a merger, reorganization, liquidation or asset sale. The partnership is controlled by Marcus Schloss and Co Inc, a New York brokerage firm, and Prime Medical Products Inc, a Greenwood, S.C., medical supplies firm.