On the other hand, a bearish crossover occurs when the price of a security falls below these EMAs. This signals a potential reversal of a trend, and it can be used to time an exit of a long position. When the nine-period EMA crosses below the 13-period EMA, it signals a short entry or an exit of a long position. However, the 13-period EMA has to below the 50-period EMA or cross below it.

Frequency and costs: A novice scalper has to make sure to keep costs in mind while making trades. Scalping involves numerous trades — as many as hundreds during a trading session. Frequent buying and selling is bound to be costly in terms of commissions, which can shrink the profit. This makes it crucial to choose the right online broker. The broker should not only provide requisites like direct access to markets, but also competitive commissions. And remember, not all brokers allow scalping. 
The following are several basic trading strategies by which day traders attempt to make profits. In addition, some day traders also use contrarian investing strategies (more commonly seen in algorithmic trading) to trade specifically against irrational behavior from day traders using the approaches below. It is important for a trader to remain flexible and adjust techniques to match changing market conditions.[11]
Many times, neither a bullish nor a bearish trend is present, but the security is moving in a somewhat predictable pattern between parallel resistance and support areas. When the market moves up and then pulls back, the highest point reached before it pulls back is the resistance. As the market continues up again, the lowest point reached before it climbs back is the support. There are swing trading opportunities in this case too, with the trader taking a long position near the support area and taking a short position near the resistance area.
Traders pay close attention to intraday price movements by using real-time charts in an attempt to benefit from short-term price fluctuations. Short-term traders typically use one-, five-, 15-, 30- and 60-minute intraday charts when trading within the market day. Typically, intraday scalping uses one- and five-minute charts for high-speed trading. Other intraday trading strategies may use 30- and 60-minute charts for trades that have hold times of several hours. Scalping is a strategy of transacting many trades per day that hopes to profit from small movements in a stock's price. The intraday trader may hold their positions for a longer period but still operate under high risks.

Many orders placed by investors and traders begin to execute as soon as the markets open in the morning, which contributes to price volatility. A seasoned player may be able to recognize patterns and pick appropriately to make profits. But for newbies, it may be better just to read the market without making any moves for the first 15 to 20 minutes. The middle hours are usually less volatile, and then movement begins to pick up again toward the closing bell. Though the rush hours offer opportunities, it’s safer for beginners to avoid them at first.
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