Price Collars

Price collars are technical controls implemented by trading platforms that prevent orders from being executed outside of a specified range relative to the current market price. By establishing an upper and lower bound, these collars act as a filter that rejects or pauses any order that would cause a disproportionate movement in the asset's value.

This mechanism is particularly effective in preventing "fat-finger" errors, where a trader accidentally enters an order with an incorrect price, and in mitigating the impact of large, aggressive market orders. In the context of digital derivatives, price collars provide a layer of stability by ensuring that execution remains within a reasonable deviation from the prevailing market price.

If a large order attempts to push the price outside the collar, the system may partially fill the order and hold the remainder, or simply reject the excess. This prevents a single trade from triggering a flash crash or cascading liquidations.

It is a proactive defense strategy for maintaining orderly markets.