Andrew Left challenges fraud conviction over probe of witness

Citron Research founder Andrew Left is seeking to overturn his securities-fraud conviction after learning that a prosecution witness became involved in a separate insider-trading investigation. His lawyers argue that the undisclosed probe denied them an opportunity to challenge the witness’s credibility during the trial, Business Insider reported Sunday.

For investors, the dispute prolongs a closely watched case involving how market commentators describe their positions and trade around published recommendations. The conviction has raised concerns among some market participants about legal exposure for activist short-sellers, whose research can influence share prices. Left’s challenge centers on whether the trial was fair, leaving those broader concerns unresolved.

A federal jury in Los Angeles convicted Left in June of 13 securities-fraud counts. Prosecutors said he misled investors through research reports and social-media posts while privately making trades inconsistent with his public price targets. The case involved stocks including Tesla (TSLA), Nvidia (NVDA) and Palantir (PLTR). Left testified that his published opinions were sincere.

The witness at the center of the dispute is Daniel Bachus, chief financial officer of Grand Canyon Education, which provides services to universities. Left’s attorneys say Bachus was the only witness who testified that Citron’s reports contained affirmative falsehoods about a company, rather than simply leaving information out.

Grand Canyon Education (LOPE) placed Bachus on paid administrative leave on August 21, several weeks after the trial ended. In a securities filing, the company linked the leave to a government investigation involving a nonemployee’s trades in its shares. Prosecutors in Left’s case subsequently described the matter as an insider-trading investigation. No government agency has publicly accused Bachus or the company of wrongdoing, and Grand Canyon Education (LOPE) said it wasn't the investigation’s focus.

Left’s lawyers contend that information about the probe could have helped them undermine Bachus’s testimony and change the verdict. Prosecutors counter that they learned of the investigation only after the trial and that the defense exaggerates his importance to a case spanning more than a dozen companies. They oppose the defense’s effort to obtain additional information about the separate inquiry.

Key details remain unclear, including which agency opened the investigation and when Bachus or Grand Canyon Education (LOPE) learned of it. Many relevant court documents remain sealed or redacted. Left has not been sentenced, and a parallel Securities and Exchange Commission civil case remains unresolved.