Tether and Bitfinex Brace for Imminent Market-Manipulation Suit

Tether and affiliated cryptocurrency exchange Bitfinex said on October 5, 2019 that they expected an imminent lawsuit accusing tether issuance of manipulating digital-asset prices. Their unusual pre-filing statement rejected an unpublished, non-peer-reviewed paper as methodologically flawed and promised to defend any resulting case.

The development mattered because USDT was already core trading infrastructure: a dollar-referenced token used to transfer value and quote crypto markets where direct banking access could be slow or unavailable. An allegation that issuance had moved bitcoin and other asset prices therefore reached beyond one issuer or venue. It challenged confidence in a settlement asset woven through the wider market.

No complaint identified by Coinburn had been filed when the October 5 statement appeared. The companies were anticipating litigation, not responding to an adjudicated finding. The underlying paper was not public, so its data, method and authors’ conclusions could not be independently evaluated from the event-day record.

What the companies said

Tether said the unseen research used flawed assumptions, incomplete or selectively chosen data, and faulty methodology. It denied that Tether or its affiliates had used token issuance to manipulate cryptocurrency prices. It also asserted that tokens were fully backed by reserves and issued in response to market demand. Bitfinex released a substantially parallel statement, according to contemporaneous reporting.

Those were company claims, not independently verified findings. “Backed by reserves” also should not be silently translated into an all-cash claim. By October 5, 2019, Tether’s own disclosure defined reserves broadly enough to include traditional currency, cash equivalents, other assets and receivables from loans to third parties, potentially including affiliates.

The timing made the statement especially sensitive. On April 25, 2019, the New York attorney general announced a court order in an investigation of iFinex, Bitfinex and Tether. The attorney general alleged that Bitfinex had lost access to more than $850 million of client and corporate funds held through Crypto Capital and had obtained access to as much as $900 million of Tether reserves. Those remained allegations under investigation on October 5; they were not a final judgment.

A quiet market, a large structural question

The October 5 spot market did not show a dramatic immediate dislocation in Kraken’s venue-specific daily snapshot. Kraken reported $47.7 million traded across all of its markets, listed bitcoin at $8,094 and measured it down 1.26% for its reporting day. That is one exchange’s daily report, not a consolidated global close, and crypto trades continuously across venues with differing prices and cutoffs.

The muted snapshot did not resolve the manipulation question. Price behavior over one day could neither validate nor disprove claims about issuance patterns extending across an earlier market cycle. The material event was institutional: a major stablecoin issuer and a major exchange publicly signaled that private research was about to become litigation, while the research itself remained unavailable for scrutiny.

Later context

A proposed class action, Leibowitz v. iFinex, was filed in the Southern District of New York on October 6, 2019. The complaint repeated manipulation and reserve-related allegations and cited the October 5 statements. That filing is later context, not something known when the companies issued their warning. A complaint records plaintiffs’ allegations; it does not establish that those allegations are true.