# Safety Price limits

CASH adds an extra safety rule to reduce price manipulation:

The **mark price is not allowed to move too far away from the most recent external oracle (spot) price**. The maximum gap is **± (1 / max leverage)**.

In an instance of a CASH market with **20× max leverage**, that means the mark is capped to stay within **±5%** of the last external oracle price — in **both** normal and off-hours sessions.