WASHINGTON, Oct 22 (Reuters) - Ryan Choi, an associate

of short-seller Andrew Left of Citron Research, agreed to pay

the U.S. Securities and Exchange Commission (SEC) $1.8 million

to settle charges relating to two of Citron's stock

recommendations, according to court documents.

The SEC accused Choi of failing to conduct adequate research

or due diligence to support the recommendations to buy the

stocks concerned and of also failing to ensure that his trading

was adequately disclosed.