There are not overnight gaps, but there are definitely volume/time gaps where there is very, very little time or volume spent at that price point. The crypto markets which are open 24/7 illustrate this concept well. They technically never have gaps, but they still practically have gaps with very low volume and low time parts of the chart. And prices tend back to those areas to fix the charts. Even big board stocks have these large empty areas on the chart where there is no technical gap, but yeah there's a gap that the PPS moved quickly though without stopping. And a healthy chart will go back and fix and retest those gaps before continuing on.
CANB has a practical gap between around 0.0525 and 0.065 or so. I have bids in that range, so I hope the chart fixes that low-volume, low-time gap in short order, but I realize mania can override TA with ease.
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