In a class action lawsuit against Tether and Bitfinex, the plaintiffs filed a new lite complaint alleging that the crypto firms manipulated cryptocurrency prices and violated the Antimonopoly Act by pushing the stablecoin USDT, which is not fully backed by the U.S. dollar, into the market. This is the third complaint in the case, overseen by U.S. District Judge Katherine Polk Failla. The complaint alleges that Tether and Bitfinex pushed up the price of cryptocurrencies by creating the illusion of increased demand, prompting the use of credit and loan funds for transactions. The lawsuit contains chat and testimony transcripts from company operators, claiming they admitted to manipulation. A Tether spokeswoman said the allegations were "completely unfounded" and was confident they would prevail in the lawsuit. Last year, lawyers for Tether and Bitfinex filed a memorandum opposing the plaintiffs' amendment of their complaint, but Judge Failla ultimately granted the plaintiffs' request. The lead plaintiffs in the case are US-based crypto traders Matthew Script, Benjamin Leibowitz, Jason Leibowitz and Pinchas Goldshtein. Lawyers for the plaintiffs did not respond to requests for comment.