It's not a short entry (last post notwithstanding, lol) per se, it will just exert a large pressure towards S/R on the price. There's the psychological effect of the nice round numbers as a decision pivot, and that's reinforced by institutional risk management of covered call exposure (search "sticky strikes" on the forum, someone posted a good example explaining this).
You spot the expected S/R level in options chains, the more 0 digits (and the 5 in front of the 0s), the stronger it's likely to be. Unbalanced call activity supports bullish outlook...it will then gap to that price, hold resistance (the bottom of the candle's trail), trade the day in a narrow range (the densely populated plains around Fuji), begging a smooth upwards move on increasing volume, and descend the other side of the mountain at the same angle and symmetrical decreasing volume (our beautiful Mt Fuji). That's the classic noob buy at the top, and it forms the top of the doji. The rest of the day is a casual walk at resistance to close at resistance.
The covered call thing is why most of FAANG stalled at $150, and oddly simultaneously.