内幕交易
nèimù jiāoyì

“内幕” n. inside facts/knowledge/story（Source: 《新世纪汉英大词典》）
“交易” v. buy and sell; deal; trade; transact business（Source: 《新世纪汉英大词典》）
“内幕交易” n. insider trading

新闻例句

不少市场人士均认为，光大期货此举有内幕交易之嫌。（Source: 中国新闻网）

More than a few market participants suspect Everbright Securities of insider trading.