https://techcrunch.com/2017/09/11/equifax-shares-tumble-another-8-after-credit-score-hack/ >Credit score giant Equifax announced on Thursday that 143 million accounts were hacked. Since then, the stock has taken a nosedive as investors anticipate more fallout. >The company saw shares fall 14% on Friday and then on Monday it fell another 8%, costing the company billions of dollars in market cap. Shares closed Monday at $113.12.