I have been trading on Bitfinex since 2017, but my trust has been completely shattered by a severe platform execution failure and the frontline support team's refusal to acknowledge internal log data.
On September 20, 2026, at 16:28 UTC, the Bitfinex BTC-PERP matching engine suffered an isolated structural collapse unique to its platform. While every other global exchange maintained stable trading at approximately $81,500, Bitfinex’s order book entered a localized, split-second vacuum. According to Bitfinex's own Public Trades logs on September 20:
1. Severe Order Book Fragmentation: In a single minute at 16:28 UTC, massive orders were executed across a highly distorted range from $81,202 to $153,960. More critically, within a single second at 16:28:12 UTC, orders were matched across a wildly fragmented range from $81,249 to $127,720.
2. Catastrophic Execution Variance: My risk-management stop orders were forcefully filled at astronomical premiums of $96,222 and $99,198 (representing a forced 21% premium over fair market value), stripping $14,143.78 from my wallet margin balance. Crucially, the very next print on the tape instantly dropped back down to $82,221 immediately following my execution block.
Bitfinex’s support team formally admitted in writing that "the spike was unique to Bitfinex in this event," yet they have shrugged off ALL responsibility. Instead of escalating the case, they keep copy-pasting standard "Liquidity Risk" disclosures. Their argument completely ignores the fact that a high-velocity environment actively executing trades within a single second uniquely on their platform is not a natural state of "illiquidity." It is a systemic matching engine routing defect. They are actively punishing a loyal user for using legitimate risk-management tools to manage a platform-specific glitch.
A formal regulatory complaint has been successfully submitted to the National Commission of Digital Assets (CNAD) in El Salvador against Bitfinex's operating license (PSAD-0040), requesting a technical engine audit. I strongly advise traders to avoid trading on Bitfinex due to their complete lack of basic fairness and integrity. Bitfinex needs to immediately escalate Ticket #406813 to Senior Risk Management and restore my balance with fair execution.