Foreign direct investment flowing both ways between the US and China may be two to four times greater than shown by data from both governments, according to a Rhodium Group analysis of deals from 1990 to 2015 released in a joint report with the National Committee on US-China Relations. Nearly 6,700 US investments in China over that quarter century have a combined value of US$228 billion, Rhodium found, far beyond the $75 billion US Department of Commerce estimate or the $70 billion from China’s Ministry of Commerce, the South China Morning Post reports. China’s 1,200 transactions over those years come to a combined value of $64 billion, eclipsing Mofcom’s $41 billion tally and the $15 billion to $21 billion range from the Commerce Department. Last year, Chinese companies invested more in the US than American companies in China for the first time.