Support
Definition
Support is a price level where buying pressure has historically overcome selling pressure, causing price to stop declining and reverse — it's the floor where demand enters the market, and when it holds, it's a potential long entry; when it breaks, it often becomes the ceiling on any bounce back up to that level.
Example
“The stock found buyers at $32.50 three times over two weeks, each time bouncing $1.50–2.00 higher. On the fourth touch, I entered long at $32.60 with a stop at $32.20 — buying support with defined risk and a clear technical premise.”
Detailed Explanation
Support zones form because of the memory embedded in price action. Traders who previously sold at $32.50 and watched the stock rise regret their sale and wait for another chance to buy that level. Traders who bought above $32.50 and sold at a loss have their cost basis there and feel validated when it comes back — buying again. These overlapping motivations create a pool of buyers at that price zone. The result is a self-fulfilling dynamic: the more times a level has held as support, the more traders know about it and act on it, which strengthens the support further. Until it breaks.
Not all support is equal. The best support levels have multiple confluences: a price that previously acted as resistance that was broken and flipped to support (the polarity flip), a level coinciding with a major moving average (VWAP, 20 EMA, 200 SMA), a round number psychological level ($20, $50, $100), and a level that held on multiple distinct timeframes. Single-touch support from yesterday's session close is much weaker than a level that has been tested on the daily, weekly, and intraday charts over months. When you're buying a support level, you want it to be widely known, multi-touch, and ideally combining several types of significance.
The break of support is as important as the hold. When a well-established support level cracks with volume and price follows through below it, that's a significant signal — the buyers who previously defended that level have been overwhelmed, and their protective stop-loss orders trigger as the level breaks, adding selling pressure to the breakdown. Former support becomes resistance: the zone that was previously filled with buyers is now filled with frustrated longs who want to sell to get out flat on any bounce back to that level. This is why "the first bounce back to a broken support" is often a shorting opportunity for experienced traders — they're selling into the trapped longs who are relieved the stock came back.