When you see the price suddenly plunge and then quickly bounce back, it’s easy for a beginner to breathe a sigh of relief: “The drop is over, so buying now should be safer.” I wouldn’t treat that long lower wick as proof of safety. It records what happened in the trades just now; it doesn’t tell you how many buyers will be willing to step in the next time sell orders appear.

A “pin” usually refers to the price briefly moving sharply in one direction and then returning close to where it started, leaving a long wick on the chart. The wick can point either up or down. From the chart alone, you can tell that the price reached that level, but you can’t know exactly who traded or why—and you certainly can’t conclude that someone deliberately manipulated the market.

You can think of the buy side as the amount available to absorb orders at different prices. If buy orders near the current price aren’t sufficient to absorb a batch of urgent sell orders, the trade could keep slipping to lower and lower prices. Later, more buy orders come in and the price goes back up. But “the price coming back up” and “the market again having enough capacity to absorb” are two different things: the next batch of sell orders could be larger, or the people willing to take them could step away, and there may be another round of sharp volatility. This is one possible mechanism; it’s not necessarily the real cause behind every single needle movement.

What I care about more is whether the conditions that caused the abnormal volatility have improved. Is the distance between the bid and ask still large? Are trades still frequently jumping prices? Have relevant messages been clarified? These are more useful than how good or bad the wick looks. Order book depth may seem thicker and the trade volume may suddenly spike—but these are only clues; order book entries can change, and lively trading doesn’t mean you can exit smoothly at the price you expected.

If you can’t make sense of this information, there’s no need to rush to draw conclusions. At least ask yourself first: if that kind of volatility happened again just now, how much would my position lose, and could I endure that loss? If the answer would affect your day-to-day life, or force you to borrow money temporarily to add to your position, what you need right now is to reduce risk—not to prove that you picked the lowest point.

Don’t treat stop-loss orders as absolute insurance. Under the order rules that switch to market orders after triggering, the trigger price doesn’t guarantee the execution price; when prices jump, you might end up selling at an even lower price. And if you use stop orders with a price limit, you might also run into the risk of not getting filled. The actual trigger criteria and execution method depend on the product rules you’re using—so you can’t just relax and increase your position size because the button says “stop-loss.”

After a single wick/needle, the market may stabilize—or it may continue to swing violently. I won’t decide when the next one will come based solely on one candlestick wick. For beginners, a more practical approach is to first make sure your position can withstand an incorrect judgment, and then observe whether executions and news return to normal. The moment the price pulls back gives you time to reassess, but it can’t guarantee that the next round will be safe.