** Atlanta-based credit reporting firm Equifax EFX.N shares fall 12% to $158.4 in premarket trading

** Co forecasts annual adj. EPS between $8.39 and $8.69, the mid-point of which is below estimates of $8.6 - data compiled by LSEG

** Higher end of forecast also trimmed to $8.69 from $8.74

** EFX also signs agreement to buy Mexican credit bureau Círculo de Crédito for enterprise value of $750 mln

** Q2 revenue, profit largely beat estimates

** Seventeen of 26 brokerages rate stock "buy" or higher, nine "hold"; their median PT is $220 - LSEG data

** Up to previous close, stock is down 17% YTD