harare zimbabwe stock market shed billion main index slump 40 percent since last wednesday military seize power lead fall robert mugabe stock exchange data show thursday main industrial index 315.12 point compare 527.27 point wednesday last week military announce takeover put former president mugabe house arrest thursday index fell 4.4 percent zimbabwe stock exchange rapid rise last two months drive investors seek safe investment amid fear return hyperinflation economy suffer acute shortages foreign exchange analysts say market enter period correction investor optimism change economic policy post-mugabe era market capitalization billion 15 billion last week bourse data show currency front black market rat buy cash dollars soften thursday buy 100 use electronic transfer cost 150 180 last week black market traders say buy dollars anticipate soften rat zimbabwe adopt u.s. dollar 2009 along britain pound south african rand tame inflation top 500 billion percent market adjust back reality analyst harare-based asset management company say gain see fuel outlook return hyperinflation continue isolation zimbabwe international lenders well well depress economic outlook analyst local stockbrocking firm say mnangagwa hit right note speech wednesday mnangagwa say want grow economy create job zimbabwe re-engage international community country face isolation since 1999 default debt international monetary fund zimbabwe 13 million people remain poor face currency shortages sky-high unemployment something mnangagwa promise address zimbabwe bourse lose billion index fall 40 percent military takeover