The whole concept of swing trading rests on the premise that short-term price movement (especially in reaction to news, rumors or surprises) tends to be exaggerated. It also tends to self-correct within two to five sessions. So a swing trade usually lasts for this duration and is based on making a move counter to the emotions of the market.
Swing traders rely on three primary reversal signals. These are:
1. Reversal day. A fundamental rule about reversal is that you have to have a short-term trend to reverse. An uptrend is defined by swing traders as three or more consecutive sessions, with each session opening higher than the previous open, and also closing higher than the previous close (higher lows followed by higher highs). A downtrend is the opposite, consisting of three or more consecutive sessions with lower opening prices than the prior, and closing lower (lower highs and lower lows).
So once these conditions are in place, a reversal is possible. A "reversal day" is just that, a downward-moving session after an uptrend, or an upward-moving session after a downtrend. This is the most basic of reversal signals, and also the least reliable. You need confirmation from another reversal signal before you can rely on the reversal day.
2. Narrow-range day, or NRD. This is a session with an exceptionally small span between opening and closing price. Candlestick chartists call this a doji, a Japanese word meaning "mistake." The most extreme NRD is a session opening and closing at the same price, and on a candlestick chart this is a horizontal line rather than a rectangle. This is a very strong reversal indicator, a signal that momentum has shifted from buyers (in the uptrend) to sellers, or from sellers (in a downtrend) to buyers.
3. Volume spike. The third swing trading reversal signal is the volume spike, any session on which volume is considerably higher than previous days. This is a very strong indicator and should not be ignored.
Whenever you find two of these three signals at the same time (like a volume spike on a NRD session, for example), the likelihood of reversal is very strong. Never act on a solitary reversal signal, but rely on indicator and confirmation.
Beyond the standard swing trading reversals are dozens of other possibilities. These include:
4. Traditional Western reversals. Look for double tops or bottoms, head and shoulders, and price gapping runs to spot potential reversal. An actual reversal is most likely when price approaches and tests resistance or support. Even if price does break through, look for price or momentum weakness to foreshadow likely retreat.
5. Momentum oscillators. Among the great reversal signals are changes in momentum. Indicators like RSI or MACD reveal when momentum is declining for the side in control. Thus, when buyer momentum is weakening, an overbought signal is going to pop up, and when seller momentum is weakening, you will find the indicator moving into the oversold range.
6. Candlestick reversals. The candlestick chart is one of the most important of technical tools. Dozens of reversal signals involving one, two or three sessions are likely to lead to better than average timing of both entry and exit. Swing traders benefit greatly by using these.
To gain more perspective on insights to trading observations and specific strategies, I hope you will join me at ThomsettOptions.com where I publish many additional articles. I also enter a regular series of daily trades and updates. For new trades, I usually include a stock chart marked up with reversal and confirmation, and provide detailed explanations of my rationale. Link to the site at ThomsettOptions.com to learn more. You can take part in discussions among members on the site at the Members Forum.