Selecting Time frame to Trade - Data Validation
Majority of the traders in the stock market like to Swing trade using the daily time frame and the 60 minute time frame. Furthermore, about 99% of them use indicators to take a trade in either direction. Now, taking trades based on multiple time frames is very logical as this ensures that the trader always trades in the direction of larger trend. But, which smaller time frame one uses determines whether the trade results in profits or losses. In this post, I want to highlight a very important aspect of data validation which is often the most neglected aspect in Swing trading. In doing so, I will also highlight, why the 60 minute time frame is not suitable for swing trading. Let's begin !
For the sake of simplicity, we will assume that a trader uses Daily time frame to measure the trend direction and 60 Minute time frame for taking the trades. Furthermore, we will also assume that the trader uses stochastic oscillator to enter and exit trades. Now, before getting into data validation aspect, lets briefly review what the stochastic oscillator does. The Stochastic Oscillator measures the level of the close relative to the high-low range over a given period of time. So, when we apply the stochastic oscillator over period of daily time frame, then, the stochastic readings typically depict the level of close relative to the High - low range over the entire day. Now, till here, everything seems fine. It is only when the trader switches to 60 minute does the problem begin to arise.
Our markets are open from 0900 Am IST to 1530 Pm IST. This means we have 6 bars (each of 60 minute) on hourly frame and 1 bar of 30 minute trading. Now, this poses a serious problem if one wants to take trades based on hourly time frame. Each price bar is a representation of the supply and demand prevailing in that hour. When we get one bar which is just of 30 minutes, then we are bound to get an error as that bar does not represent the accurate demand and supply scenario in the market.
Similarly, now, If the trader is using Stochastics oscillator that measures overbought and oversold based on where the close fell relative to the high and low of a bar, then the size of the bar is integral to the result. Because price ranges tend to increase with the length of time, a bar with too little time will give inaccurate signals and give false reading on a market. Once this happens, the profitability of the trader gets seriously affected as now he has deviated from his plan unknowingly.
Typical solution to counter this problem is to create bar sizes with equal length of trading action. Our markets are open for a total 390 minutes. In this case, it would mean, creating a time frame which represents 65 minutes of trading. That is, a 65 minute time frame in which we will have 6 bars of 65 minutes of trading representing the total 390 minutes worth of action. Those who fail to adapt to this concept, will be neglecting a very serious problem of data validation. All we do is trade on data, and if the underlying data is not validated and accurate, then our entire plan is prone to errors.
In conclusion, the next time one uses different time frames to enter trades, please ensure your data is validated and is error free.
Tc