** Shares of Smart Parking SPZ.AX rise as much as 3.9% to A$0.805, their biggest intraday pct gain since June 24

** Parking services provider says it has acquired U.S.-based parking operator, American Parking

** Says deal for $12 million funded from existing cash reserves, debt facility and co's shares

** American Parking covers 54 locations across Oklahoma, Texas and Arkansas

** YTD, stock down 38.1%