16 September 2016, New York — New York Attorney General Eric Schneiderman is investigating Exxon Mobil Corp's accounting practices and why the company hasn't written down the value of its assets despite a steep drop in oil prices, WSJ reported, citing people familiar with the matter. A more than 60 percent plunge in oil prices since mid-2014 has forced oil producers worldwide to write down the value of their assets. In a note earlier this month, Jefferies estimated that a group of integrated oil companies had impaired assets worth $103 billion since the start of 2014. This is equivalent to 8 percent of their 2014 net assets. The brokerage expects more asset impairments in the industry, noting that Exxon is the only major producer to not have written down any assets. Exxon Mobil and the New York Attorney General's office were not immediately available for comments.