If a token trades on a centralised exchange anywhere, there is a good chance KuCoin lists it. That breadth — well over 700 assets, with new listings arriving faster than at any comparable venue — is the entire argument for the account, and the low fee schedule makes it cheap to act on. Everything else about KuCoin argues for keeping the balance small.
What KuCoin actually is
The exchange runs spot, margin, futures, a lending market, staking and a launchpad, with KCS as a fee-discount and revenue-share token. It has been operating since 2017 and remains one of the highest-volume venues for mid and small-cap assets specifically. Fees start around 0.10% maker and taker, falling with KCS holdings and volume, which puts it among the cheaper large venues.
The 2020 breach and what followed
In September 2020 attackers drained roughly $280m from KuCoin hot wallets. The exchange identified the affected assets, worked with projects to freeze or reissue tokens, recovered a substantial share and covered the remainder from its insurance fund; users were made whole. The handling was competent, and the underlying failure — hot wallets holding that much value with insufficient key controls — was a serious operational lapse. Since then it has published proof-of-reserves attestations and tightened custody, with no comparable incident.
The US case and access risk
In January 2025 KuCoin's operating entity pleaded guilty to operating an unlicensed money transmitting business, agreed to penalties of around $300m, and withdrew from the US market for at least two years, with its founders stepping back from operations. For non-US users the platform continues, but the episode illustrates the concrete risk of using lightly licensed venues: access can end abruptly by legal order rather than by business decision, and balances then need to be moved on someone else's timetable.
Liquidity: read the listing count carefully
A long asset list is not the same as a liquid one. Depth on KuCoin's majors is respectable; on much of the small-cap tail, the order book is thin enough that a moderate order moves the price several per cent. Check the book before sizing a position, and treat the listing itself as access rather than as liquidity.
Who should use KuCoin
Traders who need early or exclusive access to small-cap assets, and who understand that they are using a venue with a breach and a guilty plea on its record. Fund it for the trade, take profits off it, and do not treat it as a custodian. For a primary account, Kraken, Coinbase or OKX are all materially better counterparties.