OLIVETTI DOES NOT EXCLUDE STAKE IN SGS-THOMSON Ing C Olivetti EC SpA <OLIV.M> does not exclude the possibility of investing in a semiconductor venture currently under discussion between Italy's <STET - Societa Finanziaria Telefonica P.A.> and France's Thomson-CSF <TCSF.PA>, an Olivetti spokesman said. He said that if Olivetti were approached by the two partners involved and the financial conditions of any proposal were considered interesting, the company did not exclude the possibility of investing in the venture. However, Olivetti had made no decision on any such investment and did not have at its disposal information to evaluate such a move. Stet and Thomson said last Thursday they were negotiating an accord involving their respective subsidiaries <SGS Microelettronica SpA> and <Thomson Semiconducteurs> in the civil semiconductor field. They said the accord, once concluded, would be put for approval to the French and Italian authorities. The Olivetti spokesman was responding to a Reuters query about Italian press reports today saying that Olivetti might participate in the venture with a two pct stake.