The market opened at 6:01 AM. The highest price in the chart between 6:01 AM and 6:02 AM was 4179.08. I had a short position at 4175.03, and my stop-loss order was placed at 4175. The actual closing price was 4179.83! Last weekend, the financial platform closed 15 minutes early, which caused the position not to be closed in time at the end of the trading day. On the morning of July 6th, there was severe slippage at the opening, with a spread of over 300 points, resulting in automatic closing of the position.