Yang also downloaded thousands of other CME files, the DOJ said. He printed numerous CME internal manuals and guidelines describing how many of the computer files in Globex interact with each other.

Yang, along with his guilty plea, said he and two unnamed business partners developed plans to form a business referred to as the Tongmei (Gateway to America) Futures Exchange Software Technology Company. The goal of the company was to increase the trading volume at the Zhangjiagang, China, chemical electronic trading exchange, the DOJ said.

Yang negotiated with the Zhangjiagang Free Trade Board to improve the trading platform for the Zhangjiagang Exchange, so that the exchange could become a high-volume trading platform for technology companies, the DOJ said.

The IDG News Service