Arcus Raises Stock Perps Initial Margin 50% and Caps Off-Hours Price Fluctuations

Arcus implements stricter risk controls for off-hours stock perpetuals, increasing initial margins by 50% and capping price deviations, while fixing funding rates to the benchmark.

Woofun AI reports that Arcus has introduced three risk control mechanisms for stock perpetual contracts trading during off-hours. The initial margin requirement for new positions increases by 50%, and price fluctuations are restricted within a range based on the closing price, which expands if deviations persist for over an hour.

Additionally, the funding expense ratio is fixed at the benchmark rate without additional premiums. These measures apply only to newly opened positions, leaving maintenance margins and liquidation prices for existing positions unchanged. The feature currently covers individual stocks and ETF-type contracts, excluding cryptocurrency perpetuals.