Yankuang Energy (HKG:1171, SHA:600188) issued 2 billion yuan in super short-term bonds, according to a Hong Kong bourse filing on Saturday.
The Chinese energy company's Hong Kong and Shanghai shares both dropped over 3% during Monday's midday trade.
The bonds have an interest rate of 1.56% and a term of 140 days.
China Merchants Bank (HKG:3968, SHA:600036) acted as the bookrunner and lead underwriter, the filing said.