Bitfinex is a Hong Kong-based cryptocurrency exchange founded in 2012, one of the oldest operational exchanges in crypto. Bitfinex was historically important as the exchange where BTC price discovery occurred during many early years of adoption. Operated by iFinex Inc., which also owns Tether (USDT) – the world largest stablecoin by market cap. Key features: spot and margin trading, peer-to-peer lending (users lend funds to margin traders for interest income), derivatives, and OTC for large institutional trades. The exchange caters to professional and institutional traders with a sophisticated interface and advanced order types (iceberg orders, algorithmic trading APIs, TWAP). Significant incidents: Bitfinex was hacked in 2016 for 120,000 BTC (~$72M at the time; worth billions at later prices). The hack led to a controversial socialised loss mechanism via BFX tokens that was eventually fully repaid. The Bitfinex-Tether relationship attracted regulatory scrutiny; both companies settled with the New York Attorney General in 2021 for $18.5M. Despite controversies, Bitfinex maintains deep liquidity for large OTC and professional trades. Its P2P lending marketplace generates consistent yields (typically 0.01-0.08% daily) for lenders providing margin liquidity.
Example: Example: A market maker provides liquidity on Bitfinex deep BTC/USD order book, posting both bid and ask limit orders within 0.1% of mid-price. Bitfinex negative maker fee (-0.02% to -0.04%) means they are paid to provide liquidity. The spread earned plus the rebate generates consistent income on high volume, making Bitfinex attractive for professional market-making operations.
Learn more: Bitfinex Exchange
