Over the three days, the company's market value declined by an approximately 781 billion yen ($6.70 billion)
Toshiba shares took an immediate hit, falling 20% to hit the Tokyo exchange's daily downward limit
Charges related to US nuclear power acquisition sent company's stock tumbling
The loss relates to the acquisition of Chicago Bridge & Iron's nuclear business unit in Oct 2015
Toshiba shares rose on the day, trading up 3.2 per cent at 366.4 yen
Over the conglomerate's $1.3 billion accounting scandal
Its sales turnover was $51 billion, 7.3% less than that in 2014
The company is trying to recover from an accounting scandal that has forced the sale of assets and executive resignations
Toshiba overestimated its revenue from sales between 2012 and 2013 by around $2 billion
Toshiba expects a whopping loss of about 710 billion yen for the year ending March