Watch the chart of any market indice or sector SPDR during market hours. You can easily tell whether that particular indice or sector is trending up or down, or moving sideways, by just watching the patterns drawn by the candlesticks.
As a matter of fact, the candlesticks are your best indicator of price action within a given time-frame. They can tell you where price has been within the last 5, 30, 60 or 120 minutes. You can also check price action on longer-term time frames like 5 days, 10 days, 3 months or more.
Basically, any time you have price closing higher than the previous high for 3 or more consecutive candlesticks in any time-frame, price is trending up. Any time price is closing lower than the previous low for 3 or more consecutive candlesticks, price is trending down. Price is moving sideways when there is no clear pattern of consecutive lower lows or higher highs.
I am assuming here that you're a little familiar with Technical Analysis things like candlesticks, moving averages, indicators and the like.
Of course, how long price uptrend, downtrend or sideway movement lasts is anybody's guess. However, some price patterns - like round tops or bottoms - have been proven to be more or less reliable predictors of continued downtrend or uptrend.
Again, no one can tell for sure where price goes next because anything - like bad news - can happen and reverse the trend or accelerate it. Remember Bear Stearns? That's why it is always a good idea to have a working stop loss order in case things go wrong while you are still in a trade. In the case of Bear Stearns, though, a stop loss wouldn't have helped you much as it sank to hell almost overnight.
I hope this helps.
