SOFIA (Bulgaria), September 12 (SeeNews) – The SOFIX-based exchange-traded fund (ETF) Expat Bulgaria [BUL:BGX] has bought back all of the 11,000 shares in Neochim [BUL:3NB] it sold on Friday after the Sofia bourse mistakenly announced it will drop the fertilizer producer from its main index, the fund’s management company told SeeNews on Tuesday.