KuCoin adjusted tick sizes for several spot pairs at 02:00 UTC on May 8, turning a microstructure update into a practical execution check. The affected list includes SEI-USDT, BRETT-USDT, KAVA-USDT and other active pairs.
Tick size changes rarely look dramatic, but they can break old bot assumptions, alter visible order-book spacing and change how limit orders display after the update.
What Happened
KuCoin said it would adjust price and quantity tick sizes for SEI-USDT, BRETT-USDT, KAVA-USDT, NEIROCTO-USDT, NIL-USDT, S-USDT, VET-USDT, ALU-USDT and NAKA-USDC.
The exchange said existing orders would not be canceled. It also told API users to use the exchange-info endpoint for the latest symbol settings and warned that old tick sizes cannot be used after adjustment.
Why It Matters
For traders, the update matters because execution quality depends on the smallest permitted price and size increments. A signal can miss or reject if the order ticket still uses the old precision.
The display rule also matters. KuCoin said old orders may be displayed with adjusted tick sizes while still filling according to their original ticks, which can confuse reconciliation if traders only read the visible rounded price.
The owner-fit read is deliberately narrow: Exchange microstructure, tick-size changes, API order placement and execution precision. That filter keeps the piece tied to a decision point instead of merely repeating an announcement headline for traffic.
What To Watch Next
Watch for post-update order rejections in bots and manual tickets. If an API route has cached symbol metadata, refresh it before sending live orders.
Also watch whether spread behavior changes on the affected pairs. More granular ticks can improve quoting, but only if enough depth appears at the new increments.
Treat the next update as validation or invalidation for this same watch item. Start with www.kucoin.com for the source trail, then use secondary confirmation only where the official trail is incomplete or delayed.
Continue this cluster
This exchange-route cluster tracks microstructure changes that decide whether a clean signal can actually be executed cleanly.
