What is Hindenburg Research, firm accusing Adani of fraud?


              FILE- Adani Group Chairman Gautam Adani attends the 'Invest Karnataka 2016 - Global Investors Meet' in Bangalore, India, Feb. 3, 2016. Hindenburg Research is a financial research firm with an explosive name and a track record of sending the stock prices of its targets tumbling. It's back in the headlines for taking on one of the world’s richest men, Indian coal mining tycoon Gautam Adani. Last week it accused the Adani Group, India's second biggest conglomerate, of a brazen stock manipulation and accounting fraud scheme. (AP Photo/Aijaz Rahi, File)
            
              FILE- Adani group Chairman Gautam Adani speaks during the inauguration of the 9th Vibrant Gujarat Global Summit in Gandhinagar, India, Jan. 18, 2019. Hindenburg Research is a financial research firm with an explosive name and a track record of sending the stock prices of its targets tumbling. It's back in the headlines for taking on one of the world’s richest men, Indian coal mining tycoon Gautam Adani. Last week it accused the Adani Group, India's second biggest conglomerate, of a brazen stock manipulation and accounting fraud scheme. (AP Photo/Ajit Solanki, File)
What is Hindenburg Research, firm accusing Adani of fraud?