The margin requirement is increased the previous day if the earnings are announced before the market is open and on the same day if the announcement is done after the market is closed. This increase is due to earnings season volatility and is intended to protect our clients against adverse scenarios.
This adjustment is removed before the next stock opening and the stock margin requirement is restored to the original 10%.
In light of the increased margin requirements, we urge you to monitor your positions closely and consider whether your accounts are sufficiently funded to maintain your positions.