Helios and Matheson Analytics Inc (HMNY)

[Grandmasters]

Citadel known shorter

Shares they brought have been used as leverage to short.

"The US-based hedge fund Citadel said on Monday one of the accounts it manages in China has been barred from trading by China’s securities regulator and is under investigation for using computer programs to manipulate prices." https://qz.com/470115/a-citadel-subsidiary-has-been-targeted-in-chinas-crackdown-on-malicious-foreign-short-sellers/

"In July, the regulator shut down 24 automated trading accounts, including one operated by Citadel Securities in Shanghai."
https://www.ft.com/content/33589fe0-412e-11e7-9d56-25f963e998b2

KEN GRIFFIN LOVES TO SHORT (sometimes it backfires)
"Griffin also blamed bans on short selling by the Securities and Exchange Commission and other regulators around the world, which "created material dislocations across many of our portfolios and disrupted our ability to assume and manage risk."

Short selling, in which traders bet against stocks and other securities, is crucial for convertible arbitrage.

With limited or no access to this tool, managers focused on this strategy lost more than 12% on average in September, leaving them down almost 20% this year, according to Credit Suisse and Tremont Group, which track hedge fund performance.

Citadel's main hedge fund is down 26% to 30% so far this year, through Oct. 10, partly because of convertible arbitrage losses."

https://www.marketwatch.com/story/citadels-return-to-firms-original-strategy-backfired