>>61105552
Let's say a stock closes the day at $20, but then after hours there is news causing the price to go up. The next day the stock opens at $30. This causes there to be a $10 gap on the chart (empty space, see pic related gme chart). If the price then goes back down to $20, the gap is considered filled.
All stocks can gap up or down depending on news, so it's a normal thing. However for some unexplainable reason since 2021, whenever gme gaps up or down, the gaps always fill. gme gapped up from $23.60 to over $24 last month, and despite the price going up to $28, the price came back down to $23.60 to fill that gap.
Currently there are 3 open gaps to the upside on gme (pic related in green) at approximately $27, $28.50, and $30. Price of gme is basically guaranteed to return to those three prices. It could be days, months, or even a year or more, but price will fill the gaps.