Abaxx Technologies Inc. is requesting that Canadian market regulators investigate whether there was any manipulative trading in its shares, following a short-selling campaign by Viceroy Research. The company says it has hired the law firm Paul Weiss to support its response and to help address concerns raised after the short seller’s disclosures.

Bloomberg reports that Abaxx’s request focuses on potential trading practices that it describes as manipulative, and it seeks a regulatory probe into its stock activity. The Financial Post adds that Abaxx’s shares have declined about 25% since June 10, the day before Viceroy publicly disclosed its short position. Both reports link the timing of the stock drop to the period around Viceroy’s disclosure.

In its filings, Abaxx frames the matter as a question for regulators to determine whether trading behavior violated market rules. The company’s actions—calling for an investigation and retaining external legal counsel—signal a formal escalation in response to the short-selling allegations, while the outcome of any regulatory review remains pending.