Mutual funds are off-limits for intraday trading. The design of these funds is for the long-term investor, and they can only be bought and sold through a broker or the fund's investment company. Also, a mutual fund's price posts only once, at the close of the trading day. This price is known as the net asset value (NAV) and reflects all of the intraday movement of the fund's assets, less its liabilities, calculated on a per-share basis.
Retail investors are prone to psychological biases that make day trading difficult. They tend to sell winners too early and hold losers too long, what some call “picking the flowers and watering the weeds.” That’s easy to do when you get a shot of adrenaline for closing out a profitable trade. Investors engage in myopic loss aversion, which renders them too afraid to buy when a stock declines because they fear it might fall further.
Scalping utilizes larger position sizes for smaller price gains in the smallest period of holding time. It is performed intraday. The main goal is to buy or sell a number of shares at the bid — or ask — price and then quickly sell them a few cents higher or lower for a profit. The holding times can vary from seconds to minutes, and in some cases up to several hours. The position is closed before the end of the total market trading session, which can extend to 8 p.m. EST.
Day trading was once an activity that was exclusive to financial firms and professional speculators. Many day traders are bank or investment firm employees working as specialists in equity investment and fund management. Day trading gained popularity after the deregulation of commissions in the United States in 1975, the advent of electronic trading platforms in the 1990s, and with the stock price volatility during the dot-com bubble.
Price volatility and average day range are critical to a day trader. A security must have sufficient price movement for a day trader to achieve a profit. Volume and liquidity are also crucial because entering and exiting trades quickly is vital to capturing small profits per trade. Securities with a small daily range or light daily volume would not be of interest to a day trader.
Successful traders have to move fast, but they don't have to think fast. Why? Because they've developed a trading strategy in advance, along with the discipline to stick to that strategy. It is important to follow your formula closely rather than try to chase profits. Don't let your emotions get the best of you and abandon your strategy. There's a mantra among day traders: "Plan your trade and trade your plan."